From 65ea657f76ff6415a95fbd3b64070bbfd5923865 Mon Sep 17 00:00:00 2001
From: Yohei Yasukawa <yohei@yasslab.jp>
Date: Sat, 25 Apr 2026 14:51:51 +0900
Subject: [PATCH 1/2] =?UTF-8?q?=E3=83=9D=E3=83=83=E3=83=89=E3=82=AD?=
 =?UTF-8?q?=E3=83=A3=E3=82=B9=E3=83=88=E5=85=A8=E3=82=A8=E3=83=94=E3=82=BD?=
 =?UTF-8?q?=E3=83=BC=E3=83=89=E3=81=AE=20rel=3D'noopenner'=20=E3=82=BF?=
 =?UTF-8?q?=E3=82=A4=E3=83=9D=E3=82=92=E4=BF=AE=E6=AD=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

rel='noopener' が正しい表記。35ファイルを一括修正。
---
 public/podcasts/0.md  | 6 +++---
 public/podcasts/1.md  | 6 +++---
 public/podcasts/10.md | 6 +++---
 public/podcasts/11.md | 6 +++---
 public/podcasts/12.md | 6 +++---
 public/podcasts/13.md | 6 +++---
 public/podcasts/14.md | 6 +++---
 public/podcasts/15.md | 6 +++---
 public/podcasts/16.md | 6 +++---
 public/podcasts/17.md | 6 +++---
 public/podcasts/18.md | 6 +++---
 public/podcasts/19.md | 6 +++---
 public/podcasts/2.md  | 6 +++---
 public/podcasts/20.md | 6 +++---
 public/podcasts/21.md | 6 +++---
 public/podcasts/22.md | 6 +++---
 public/podcasts/23.md | 6 +++---
 public/podcasts/24.md | 6 +++---
 public/podcasts/25.md | 6 +++---
 public/podcasts/26.md | 6 +++---
 public/podcasts/27.md | 6 +++---
 public/podcasts/28.md | 6 +++---
 public/podcasts/29.md | 6 +++---
 public/podcasts/3.md  | 6 +++---
 public/podcasts/30.md | 6 +++---
 public/podcasts/31.md | 6 +++---
 public/podcasts/32.md | 2 +-
 public/podcasts/33.md | 2 +-
 public/podcasts/34.md | 2 +-
 public/podcasts/4.md  | 6 +++---
 public/podcasts/5.md  | 6 +++---
 public/podcasts/6.md  | 6 +++---
 public/podcasts/7.md  | 6 +++---
 public/podcasts/8.md  | 6 +++---
 public/podcasts/9.md  | 6 +++---
 35 files changed, 99 insertions(+), 99 deletions(-)

diff --git a/public/podcasts/0.md b/public/podcasts/0.md
index b5525fef3..757abdb49 100644
--- a/public/podcasts/0.md
+++ b/public/podcasts/0.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href=''
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/0.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/1.md b/public/podcasts/1.md
index ffcad66e0..96425b2ea 100644
--- a/public/podcasts/1.md
+++ b/public/podcasts/1.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=nL3xy9Xk8gM&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=1'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/1.png' alt='Cover Photo' class='lazy' loading='lazy'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=nL3xy9Xk8gM&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=1' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/001----CoderDojo-euhits' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=nL3xy9Xk8gM&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=1' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/001----CoderDojo-euhits' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/10.md b/public/podcasts/10.md
index 122011523..dc7ff9599 100644
--- a/public/podcasts/10.md
+++ b/public/podcasts/10.md
@@ -12,12 +12,12 @@ For English speakers, <a href="https://twitter.com/CoderDojo/status/107567740441
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=GhuhF0gngKo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=10'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/10.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=GhuhF0gngKo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=10' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/010---EN-Programming-is-Beyond-a-Job-For-Me-euhiuh' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=GhuhF0gngKo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=10' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/010---EN-Programming-is-Beyond-a-Job-For-Me-euhiuh' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/11.md b/public/podcasts/11.md
index c882f197a..c2627f6f2 100644
--- a/public/podcasts/11.md
+++ b/public/podcasts/11.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=3tVJn5GqDtU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/11.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=3tVJn5GqDtU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/011---PR--with-euhiu6' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=3tVJn5GqDtU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/011---PR--with-euhiu6' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/12.md b/public/podcasts/12.md
index 71d3f9eb2..55e18e8a9 100644
--- a/public/podcasts/12.md
+++ b/public/podcasts/12.md
@@ -4,12 +4,12 @@ Guest: [Bill Liao](https://twitter.com/liaonet), co-founder of [CoderDojo](https
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=A8gENg7DPok&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/12.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=A8gENg7DPok&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/012---EN-The-1st-CoderDojo-and-the-Global-Vision-euhitq' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=A8gENg7DPok&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/012---EN-The-1st-CoderDojo-and-the-Global-Vision-euhitq' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/13.md b/public/podcasts/13.md
index 6c09a9044..c9922d922 100644
--- a/public/podcasts/13.md
+++ b/public/podcasts/13.md
@@ -5,12 +5,12 @@ CoderDojo Japan公式ブック Scratchでつくる!たのしむ!プログラミ
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Un_qJ2JzDAQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=13'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/13.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=Un_qJ2JzDAQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=13' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/013---CoderDojo--Scratch-euhiu2' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=Un_qJ2JzDAQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=13' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/013---CoderDojo--Scratch-euhiu2' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/14.md b/public/podcasts/14.md
index 92d4520ee..13bab9785 100644
--- a/public/podcasts/14.md
+++ b/public/podcasts/14.md
@@ -2,12 +2,12 @@ Makeblock 社 [@maming435](https://twitter.com/maming435) さんと CoderDojo 
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=UbSd2qokAQg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=14'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/14.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=UbSd2qokAQg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=14' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/014---PR----Makeblock-euhitp' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=UbSd2qokAQg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=14' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/014---PR----Makeblock-euhitp' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/15.md b/public/podcasts/15.md
index 7b9ed8127..ca0b0b1c4 100644
--- a/public/podcasts/15.md
+++ b/public/podcasts/15.md
@@ -5,12 +5,12 @@ DojoCon Japan 2019 - つぎのステップ
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=uGTWCBIchKI&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=15'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/15.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=uGTWCBIchKI&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=15' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/015---DojoCon-Japan-2019-euhiu5' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=uGTWCBIchKI&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=15' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/015---DojoCon-Japan-2019-euhiu5' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/16.md b/public/podcasts/16.md
index d0c5f54f1..5b76cd646 100644
--- a/public/podcasts/16.md
+++ b/public/podcasts/16.md
@@ -5,12 +5,12 @@ DojoCon Japan 2019 - つぎのステップ
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=um0CMoAX2aA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=16'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/16.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=um0CMoAX2aA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=16' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/016---DojoCon-Japan-2019-euhiu9' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=um0CMoAX2aA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=16' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/016---DojoCon-Japan-2019-euhiu9' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/17.md b/public/podcasts/17.md
index c814ecc79..3427b675f 100644
--- a/public/podcasts/17.md
+++ b/public/podcasts/17.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=EEcI-0O-1SA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=17'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/17.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=EEcI-0O-1SA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=17' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/017---euhiu8' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=EEcI-0O-1SA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=17' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/017---euhiu8' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/18.md b/public/podcasts/18.md
index a33c7e37d..a39106c8d 100644
--- a/public/podcasts/18.md
+++ b/public/podcasts/18.md
@@ -4,12 +4,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=zmol3FhdL9U&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=18'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/18.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=zmol3FhdL9U&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=18' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/018----Scratch-euhiuf' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=zmol3FhdL9U&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=18' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/018----Scratch-euhiuf' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/19.md b/public/podcasts/19.md
index 860b8d566..95d07675d 100644
--- a/public/podcasts/19.md
+++ b/public/podcasts/19.md
@@ -5,12 +5,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=fcIVHHeKQLQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=19'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/19.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=fcIVHHeKQLQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=19' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/019---CoderDojo-Japan-euhiu7' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=fcIVHHeKQLQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=19' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/019---CoderDojo-Japan-euhiu7' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/2.md b/public/podcasts/2.md
index 87b03b85a..4e3f7e278 100644
--- a/public/podcasts/2.md
+++ b/public/podcasts/2.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=mmZ5ZqoiViQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=2'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/2.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=mmZ5ZqoiViQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=2' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/002----CoderDojo--Scratch-euhiu1/a-a56juk1' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=mmZ5ZqoiViQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=2' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/002----CoderDojo--Scratch-euhiu1/a-a56juk1' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/20.md b/public/podcasts/20.md
index b37c060de..0f0f2ada9 100644
--- a/public/podcasts/20.md
+++ b/public/podcasts/20.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=B6BZOhsu058&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=20'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/20.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=B6BZOhsu058&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=20' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/020---Scratch-euhitv' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=B6BZOhsu058&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=20' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/020---Scratch-euhitv' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/21.md b/public/podcasts/21.md
index 50f5841c5..d6a77bfbd 100644
--- a/public/podcasts/21.md
+++ b/public/podcasts/21.md
@@ -5,12 +5,12 @@ CoderDojo 向け TFabWork 無償レンタルプログラム
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=43vUwn_M6Ro&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=21'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/21.jpg' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=43vUwn_M6Ro&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=21' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/021---TFabWorks-euhiv6' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=43vUwn_M6Ro&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=21' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/021---TFabWorks-euhiv6' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/22.md b/public/podcasts/22.md
index af74d6efd..f09974543 100644
--- a/public/podcasts/22.md
+++ b/public/podcasts/22.md
@@ -2,12 +2,12 @@ DojoCon Japan 2020 共同実行委員長の曽我さん ([@ymsg19](https://twitt
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=TsVtvvwKlKk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=22'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/22.jpg' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=TsVtvvwKlKk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=22' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/022---DojoCon-Japan-2020-euhiui' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=TsVtvvwKlKk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=22' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/022---DojoCon-Japan-2020-euhiui' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/23.md b/public/podcasts/23.md
index b1754f668..f8037eadb 100644
--- a/public/podcasts/23.md
+++ b/public/podcasts/23.md
@@ -10,12 +10,12 @@ CoderDojo の活動を[計３０回以上](https://www.google.com/search?q=site%
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=lzzo7-ieWjs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=23'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/23.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=lzzo7-ieWjs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=23' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/023----CoderDojo-euhitu' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=lzzo7-ieWjs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=23' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/023----CoderDojo-euhitu' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/24.md b/public/podcasts/24.md
index 609ae41d2..89e3daf20 100644
--- a/public/podcasts/24.md
+++ b/public/podcasts/24.md
@@ -2,12 +2,12 @@ CoderDojo 調布の [@jishiha](https://twitter.com/jishiha) さんより、2021
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Igm7lYTxkbc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=24'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/24.jpg' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=Igm7lYTxkbc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=24' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/024---Scratch-e16in4n' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=Igm7lYTxkbc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=24' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/024---Scratch-e16in4n' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/25.md b/public/podcasts/25.md
index c9cfc188d..29b3d5e7c 100644
--- a/public/podcasts/25.md
+++ b/public/podcasts/25.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=cICEHEJxY_Y&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=25'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/25.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=cICEHEJxY_Y&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=25' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/025---222--CoderDojo2012-e1a8gp0' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=cICEHEJxY_Y&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=25' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/025---222--CoderDojo2012-e1a8gp0' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/26.md b/public/podcasts/26.md
index 3dfa82a79..7bc34f77f 100644
--- a/public/podcasts/26.md
+++ b/public/podcasts/26.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=xn5Y5OTvRZU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=26'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/26.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=xn5Y5OTvRZU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=26' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/026---CoderDojo-Japan-e1b340h' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=xn5Y5OTvRZU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=26' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/026---CoderDojo-Japan-e1b340h' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/27.md b/public/podcasts/27.md
index 8cb7f2783..5bd3a1424 100644
--- a/public/podcasts/27.md
+++ b/public/podcasts/27.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=3r29apFGyGg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=27'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/27.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=3r29apFGyGg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=27' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/027---DojoCon-Japan-2021-e1j3gf1' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=3r29apFGyGg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=27' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/027---DojoCon-Japan-2021-e1j3gf1' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/28.md b/public/podcasts/28.md
index c3d9c4078..837d4a16c 100644
--- a/public/podcasts/28.md
+++ b/public/podcasts/28.md
@@ -5,12 +5,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=9OXt92jf0Dg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=28'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/28.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=9OXt92jf0Dg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=28' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/028---e1pa163' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=9OXt92jf0Dg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=28' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/028---e1pa163' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/29.md b/public/podcasts/29.md
index 1b7c81f12..1cff2e08c 100644
--- a/public/podcasts/29.md
+++ b/public/podcasts/29.md
@@ -2,12 +2,12 @@ DojoCon Japan 2022 の交流会で発表した『CoderDojo Japan 2022 活動報
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=vydfLvxuVe4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=29'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/29.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=vydfLvxuVe4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=29' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/029---CoderDojo-Japan-2022-e1s49f0' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=vydfLvxuVe4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=29' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/029---CoderDojo-Japan-2022-e1s49f0' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/3.md b/public/podcasts/3.md
index 982d2e770..5572fc31c 100644
--- a/public/podcasts/3.md
+++ b/public/podcasts/3.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=xQxg-TwVlWo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=3'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/3.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=xQxg-TwVlWo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=3' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/003----CoderDojo-euhiue' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=xQxg-TwVlWo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=3' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/003----CoderDojo-euhiue' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/30.md b/public/podcasts/30.md
index 83363fc97..533f76774 100644
--- a/public/podcasts/30.md
+++ b/public/podcasts/30.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=j4Us2yBqT2k&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=30'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/30.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=j4Us2yBqT2k&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=30' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/030---Microbit---CoderDojo-e1s61rm' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=j4Us2yBqT2k&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=30' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/030---Microbit---CoderDojo-e1s61rm' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/31.md b/public/podcasts/31.md
index 5287f96e0..2ec9c9517 100644
--- a/public/podcasts/31.md
+++ b/public/podcasts/31.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=gzgk8GDXSYc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=31'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/31.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=gzgk8GDXSYc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=31' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://creators.spotify.com/pod/show/coderdojo-japan/episodes/031-----CoderDojo-Japan-e2u35h2' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=gzgk8GDXSYc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=31' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://creators.spotify.com/pod/show/coderdojo-japan/episodes/031-----CoderDojo-Japan-e2u35h2' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/32.md b/public/podcasts/32.md
index f85a4f11f..e4a06c28b 100644
--- a/public/podcasts/32.md
+++ b/public/podcasts/32.md
@@ -2,7 +2,7 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Dd9IYiF0R6E&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=32'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/32.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
diff --git a/public/podcasts/33.md b/public/podcasts/33.md
index 95f3d73a5..794cd3ee7 100644
--- a/public/podcasts/33.md
+++ b/public/podcasts/33.md
@@ -3,7 +3,7 @@ DojoCon Japan 2025 の基調講演「**[プログラミング教育の脱構築
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=hVRxM12xHeY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/33.webp' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
diff --git a/public/podcasts/34.md b/public/podcasts/34.md
index a22e26082..10e5693a4 100644
--- a/public/podcasts/34.md
+++ b/public/podcasts/34.md
@@ -2,7 +2,7 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=ThOprvWsqkw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/34.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
diff --git a/public/podcasts/4.md b/public/podcasts/4.md
index 022f7d5fb..e44bd0d46 100644
--- a/public/podcasts/4.md
+++ b/public/podcasts/4.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=sT5J3NkOXSk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=4'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/4.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=sT5J3NkOXSk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=4' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/004---DojoCon-Japan-euhiuc' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=sT5J3NkOXSk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=4' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/004---DojoCon-Japan-euhiuc' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/5.md b/public/podcasts/5.md
index 6a945d13b..45243ba4e 100644
--- a/public/podcasts/5.md
+++ b/public/podcasts/5.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=aMyXinLDajs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=5'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/5.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=aMyXinLDajs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=5' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/005---DecaDojo-euhiu3' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=aMyXinLDajs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=5' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/005---DecaDojo-euhiu3' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/6.md b/public/podcasts/6.md
index c1980656e..7dccb3ff4 100644
--- a/public/podcasts/6.md
+++ b/public/podcasts/6.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=6PlvxjocAs4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=6'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/6.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=6PlvxjocAs4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=6' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/006---PR-euhitt' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=6PlvxjocAs4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=6' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/006---PR-euhitt' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/7.md b/public/podcasts/7.md
index b074553ce..d60bebe91 100644
--- a/public/podcasts/7.md
+++ b/public/podcasts/7.md
@@ -2,12 +2,12 @@ CoderDojo Kanazawa の寺本さん ([@teramotodaiki](https://twitter.com/teramot
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Pypw1lXb-XY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=7'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/7.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=Pypw1lXb-XY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=7' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/007---Hack-for-Dojo-euhiv4' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=Pypw1lXb-XY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=7' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/007---Hack-for-Dojo-euhiv4' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/8.md b/public/podcasts/8.md
index e93545d35..58fc96368 100644
--- a/public/podcasts/8.md
+++ b/public/podcasts/8.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=4T1kRlGPHwQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=8'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/8.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=4T1kRlGPHwQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=8' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/008---PR--CASE-Shinjuku-euhiun' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=4T1kRlGPHwQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=8' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/008---PR--CASE-Shinjuku-euhiun' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/9.md b/public/podcasts/9.md
index 19167a563..d9df234ed 100644
--- a/public/podcasts/9.md
+++ b/public/podcasts/9.md
@@ -5,12 +5,12 @@ DojoBudokai 2017 - CoderDojo 広島
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=c9CZqYjTDGw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=9'
-     target='_blank' rel='noopenner'>
+     target='_blank' rel='noopener'>
     <img src='/podcasts/9.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=c9CZqYjTDGw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=9' target='_blank' rel='noopenner'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/009----CoderDojo-euhiuo' target='_blank' rel='noopenner'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=c9CZqYjTDGw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=9' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/009----CoderDojo-euhiuo' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 

From 2775fa386e7196dd9edb99a86ba5c6d3e8e3e4d9 Mon Sep 17 00:00:00 2001
From: Yohei Yasukawa <yohei@yasslab.jp>
Date: Sat, 25 Apr 2026 15:00:28 +0900
Subject: [PATCH 2/2] =?UTF-8?q?=E3=83=9D=E3=83=83=E3=83=89=E3=82=AD?=
 =?UTF-8?q?=E3=83=A3=E3=82=B9=E3=83=88=E5=85=A8=E3=82=A8=E3=83=94=E3=82=BD?=
 =?UTF-8?q?=E3=83=BC=E3=83=89=E3=81=8B=E3=82=89=E4=B8=8D=E8=A6=81=E3=81=AA?=
 =?UTF-8?q?=20rel=3D'noopenner'=20=E3=82=92=E5=89=8A=E9=99=A4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

現代のブラウザは target='_blank' に自動的に noopener を適用するため、
タイポのある rel 属性を削除してシンプルにする。
---
 public/podcasts/0.md  | 6 +++---
 public/podcasts/1.md  | 6 +++---
 public/podcasts/10.md | 6 +++---
 public/podcasts/11.md | 6 +++---
 public/podcasts/12.md | 8 ++++----
 public/podcasts/13.md | 6 +++---
 public/podcasts/14.md | 6 +++---
 public/podcasts/15.md | 6 +++---
 public/podcasts/16.md | 6 +++---
 public/podcasts/17.md | 6 +++---
 public/podcasts/18.md | 6 +++---
 public/podcasts/19.md | 6 +++---
 public/podcasts/2.md  | 6 +++---
 public/podcasts/20.md | 6 +++---
 public/podcasts/21.md | 6 +++---
 public/podcasts/22.md | 6 +++---
 public/podcasts/23.md | 6 +++---
 public/podcasts/24.md | 6 +++---
 public/podcasts/25.md | 6 +++---
 public/podcasts/26.md | 6 +++---
 public/podcasts/27.md | 6 +++---
 public/podcasts/28.md | 6 +++---
 public/podcasts/29.md | 6 +++---
 public/podcasts/3.md  | 6 +++---
 public/podcasts/30.md | 6 +++---
 public/podcasts/31.md | 6 +++---
 public/podcasts/32.md | 2 +-
 public/podcasts/33.md | 2 +-
 public/podcasts/34.md | 2 +-
 public/podcasts/4.md  | 6 +++---
 public/podcasts/5.md  | 6 +++---
 public/podcasts/6.md  | 6 +++---
 public/podcasts/7.md  | 6 +++---
 public/podcasts/8.md  | 6 +++---
 public/podcasts/9.md  | 6 +++---
 35 files changed, 100 insertions(+), 100 deletions(-)

diff --git a/public/podcasts/0.md b/public/podcasts/0.md
index 757abdb49..f803bbe55 100644
--- a/public/podcasts/0.md
+++ b/public/podcasts/0.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href=''
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/0.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/1.md b/public/podcasts/1.md
index 96425b2ea..149cce489 100644
--- a/public/podcasts/1.md
+++ b/public/podcasts/1.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=nL3xy9Xk8gM&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=1'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/1.png' alt='Cover Photo' class='lazy' loading='lazy'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=nL3xy9Xk8gM&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=1' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/001----CoderDojo-euhits' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=nL3xy9Xk8gM&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=1' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/001----CoderDojo-euhits' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/10.md b/public/podcasts/10.md
index dc7ff9599..e690ba830 100644
--- a/public/podcasts/10.md
+++ b/public/podcasts/10.md
@@ -12,12 +12,12 @@ For English speakers, <a href="https://twitter.com/CoderDojo/status/107567740441
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=GhuhF0gngKo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=10'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/10.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=GhuhF0gngKo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=10' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/010---EN-Programming-is-Beyond-a-Job-For-Me-euhiuh' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=GhuhF0gngKo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=10' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/010---EN-Programming-is-Beyond-a-Job-For-Me-euhiuh' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/11.md b/public/podcasts/11.md
index c2627f6f2..f02e2f537 100644
--- a/public/podcasts/11.md
+++ b/public/podcasts/11.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=3tVJn5GqDtU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/11.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=3tVJn5GqDtU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/011---PR--with-euhiu6' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=3tVJn5GqDtU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/011---PR--with-euhiu6' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/12.md b/public/podcasts/12.md
index 55e18e8a9..c1877e809 100644
--- a/public/podcasts/12.md
+++ b/public/podcasts/12.md
@@ -4,12 +4,12 @@ Guest: [Bill Liao](https://twitter.com/liaonet), co-founder of [CoderDojo](https
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=A8gENg7DPok&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/12.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=A8gENg7DPok&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/012---EN-The-1st-CoderDojo-and-the-Global-Vision-euhitq' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=A8gENg7DPok&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=12' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/012---EN-The-1st-CoderDojo-and-the-Global-Vision-euhitq' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
@@ -61,7 +61,7 @@ Guest: [Bill Liao](https://twitter.com/liaonet), co-founder of [CoderDojo](https
   Another thing in my dojo that works really well is we give out belts. You know, in karate you have a white belt, a red belt, a brown belt, green belt, you know, black belt. We have USB wristbands in white, in, you know, different colors. To get a black belt in my dojo, you need to have submitted code to GitHub that has been reused a million times. All right, so there have to be a million live instances of your code. That's a black belt. And the kids love the belts. They'll do a lot to earn the belt. And the belts are given free by businesses. They put their logo on there. That's fine. What else? Yeah, I guess the other thing is if you have questions, now's the time to ask. You know, if you want to know anything about CoderDojo, I still know pretty much everything. So thank you very much. And if you have questions, now's the time. Thank you very much.<br>
   <br>
   (※ 質疑応答に続きます。続きは
-  <a href='https://www.youtube.com/watch?v=KW8DW06f0cc&list=PL94GDfaSQTmK6xzLNsBMx8gkKrT2HiZ9D&index=5' target='_blank' rel='noopener'>YouTube</a>
+  <a href='https://www.youtube.com/watch?v=KW8DW06f0cc&list=PL94GDfaSQTmK6xzLNsBMx8gkKrT2HiZ9D&index=5' target='_blank'>YouTube</a>
   で!)
 </blockquote>
 
diff --git a/public/podcasts/13.md b/public/podcasts/13.md
index c9922d922..17b707ca0 100644
--- a/public/podcasts/13.md
+++ b/public/podcasts/13.md
@@ -5,12 +5,12 @@ CoderDojo Japan公式ブック Scratchでつくる!たのしむ!プログラミ
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Un_qJ2JzDAQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=13'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/13.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=Un_qJ2JzDAQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=13' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/013---CoderDojo--Scratch-euhiu2' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=Un_qJ2JzDAQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=13' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/013---CoderDojo--Scratch-euhiu2' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/14.md b/public/podcasts/14.md
index 13bab9785..e6dfbbba7 100644
--- a/public/podcasts/14.md
+++ b/public/podcasts/14.md
@@ -2,12 +2,12 @@ Makeblock 社 [@maming435](https://twitter.com/maming435) さんと CoderDojo 
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=UbSd2qokAQg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=14'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/14.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=UbSd2qokAQg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=14' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/014---PR----Makeblock-euhitp' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=UbSd2qokAQg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=14' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/014---PR----Makeblock-euhitp' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/15.md b/public/podcasts/15.md
index ca0b0b1c4..3bf169468 100644
--- a/public/podcasts/15.md
+++ b/public/podcasts/15.md
@@ -5,12 +5,12 @@ DojoCon Japan 2019 - つぎのステップ
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=uGTWCBIchKI&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=15'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/15.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=uGTWCBIchKI&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=15' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/015---DojoCon-Japan-2019-euhiu5' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=uGTWCBIchKI&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=15' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/015---DojoCon-Japan-2019-euhiu5' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/16.md b/public/podcasts/16.md
index 5b76cd646..c9e99adee 100644
--- a/public/podcasts/16.md
+++ b/public/podcasts/16.md
@@ -5,12 +5,12 @@ DojoCon Japan 2019 - つぎのステップ
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=um0CMoAX2aA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=16'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/16.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=um0CMoAX2aA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=16' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/016---DojoCon-Japan-2019-euhiu9' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=um0CMoAX2aA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=16' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/016---DojoCon-Japan-2019-euhiu9' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/17.md b/public/podcasts/17.md
index 3427b675f..6a1b341f0 100644
--- a/public/podcasts/17.md
+++ b/public/podcasts/17.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=EEcI-0O-1SA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=17'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/17.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=EEcI-0O-1SA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=17' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/017---euhiu8' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=EEcI-0O-1SA&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=17' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/017---euhiu8' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/18.md b/public/podcasts/18.md
index a39106c8d..20eb59d04 100644
--- a/public/podcasts/18.md
+++ b/public/podcasts/18.md
@@ -4,12 +4,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=zmol3FhdL9U&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=18'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/18.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=zmol3FhdL9U&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=18' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/018----Scratch-euhiuf' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=zmol3FhdL9U&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=18' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/018----Scratch-euhiuf' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/19.md b/public/podcasts/19.md
index 95d07675d..4d31b0360 100644
--- a/public/podcasts/19.md
+++ b/public/podcasts/19.md
@@ -5,12 +5,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=fcIVHHeKQLQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=19'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/19.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=fcIVHHeKQLQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=19' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/019---CoderDojo-Japan-euhiu7' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=fcIVHHeKQLQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=19' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/019---CoderDojo-Japan-euhiu7' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/2.md b/public/podcasts/2.md
index 4e3f7e278..5f4e5067c 100644
--- a/public/podcasts/2.md
+++ b/public/podcasts/2.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=mmZ5ZqoiViQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=2'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/2.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=mmZ5ZqoiViQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=2' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/002----CoderDojo--Scratch-euhiu1/a-a56juk1' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=mmZ5ZqoiViQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=2' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/002----CoderDojo--Scratch-euhiu1/a-a56juk1' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/20.md b/public/podcasts/20.md
index 0f0f2ada9..b5145bead 100644
--- a/public/podcasts/20.md
+++ b/public/podcasts/20.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=B6BZOhsu058&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=20'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/20.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=B6BZOhsu058&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=20' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/020---Scratch-euhitv' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=B6BZOhsu058&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=20' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/020---Scratch-euhitv' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/21.md b/public/podcasts/21.md
index d6a77bfbd..82df78870 100644
--- a/public/podcasts/21.md
+++ b/public/podcasts/21.md
@@ -5,12 +5,12 @@ CoderDojo 向け TFabWork 無償レンタルプログラム
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=43vUwn_M6Ro&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=21'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/21.jpg' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=43vUwn_M6Ro&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=21' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/021---TFabWorks-euhiv6' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=43vUwn_M6Ro&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=21' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/021---TFabWorks-euhiv6' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/22.md b/public/podcasts/22.md
index f09974543..d84f6aac5 100644
--- a/public/podcasts/22.md
+++ b/public/podcasts/22.md
@@ -2,12 +2,12 @@ DojoCon Japan 2020 共同実行委員長の曽我さん ([@ymsg19](https://twitt
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=TsVtvvwKlKk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=22'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/22.jpg' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=TsVtvvwKlKk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=22' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/022---DojoCon-Japan-2020-euhiui' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=TsVtvvwKlKk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=22' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/022---DojoCon-Japan-2020-euhiui' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/23.md b/public/podcasts/23.md
index f8037eadb..52c0580b1 100644
--- a/public/podcasts/23.md
+++ b/public/podcasts/23.md
@@ -10,12 +10,12 @@ CoderDojo の活動を[計３０回以上](https://www.google.com/search?q=site%
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=lzzo7-ieWjs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=23'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/23.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=lzzo7-ieWjs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=23' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/023----CoderDojo-euhitu' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=lzzo7-ieWjs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=23' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/023----CoderDojo-euhitu' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/24.md b/public/podcasts/24.md
index 89e3daf20..d82705d5b 100644
--- a/public/podcasts/24.md
+++ b/public/podcasts/24.md
@@ -2,12 +2,12 @@ CoderDojo 調布の [@jishiha](https://twitter.com/jishiha) さんより、2021
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Igm7lYTxkbc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=24'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/24.jpg' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=Igm7lYTxkbc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=24' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/024---Scratch-e16in4n' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=Igm7lYTxkbc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=24' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/024---Scratch-e16in4n' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/25.md b/public/podcasts/25.md
index 29b3d5e7c..54a293eb8 100644
--- a/public/podcasts/25.md
+++ b/public/podcasts/25.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=cICEHEJxY_Y&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=25'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/25.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=cICEHEJxY_Y&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=25' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/025---222--CoderDojo2012-e1a8gp0' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=cICEHEJxY_Y&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=25' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/025---222--CoderDojo2012-e1a8gp0' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/26.md b/public/podcasts/26.md
index 7bc34f77f..08c886a02 100644
--- a/public/podcasts/26.md
+++ b/public/podcasts/26.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=xn5Y5OTvRZU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=26'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/26.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=xn5Y5OTvRZU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=26' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/026---CoderDojo-Japan-e1b340h' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=xn5Y5OTvRZU&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=26' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/026---CoderDojo-Japan-e1b340h' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/27.md b/public/podcasts/27.md
index 5bd3a1424..0d9654c9b 100644
--- a/public/podcasts/27.md
+++ b/public/podcasts/27.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=3r29apFGyGg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=27'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/27.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=3r29apFGyGg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=27' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/027---DojoCon-Japan-2021-e1j3gf1' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=3r29apFGyGg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=27' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/027---DojoCon-Japan-2021-e1j3gf1' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/28.md b/public/podcasts/28.md
index 837d4a16c..50892ea5c 100644
--- a/public/podcasts/28.md
+++ b/public/podcasts/28.md
@@ -5,12 +5,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=9OXt92jf0Dg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=28'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/28.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=9OXt92jf0Dg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=28' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/028---e1pa163' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=9OXt92jf0Dg&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=28' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/028---e1pa163' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/29.md b/public/podcasts/29.md
index 1cff2e08c..6b4d9ded6 100644
--- a/public/podcasts/29.md
+++ b/public/podcasts/29.md
@@ -2,12 +2,12 @@ DojoCon Japan 2022 の交流会で発表した『CoderDojo Japan 2022 活動報
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=vydfLvxuVe4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=29'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/29.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=vydfLvxuVe4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=29' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/029---CoderDojo-Japan-2022-e1s49f0' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=vydfLvxuVe4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=29' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/029---CoderDojo-Japan-2022-e1s49f0' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/3.md b/public/podcasts/3.md
index 5572fc31c..8ff2e8b31 100644
--- a/public/podcasts/3.md
+++ b/public/podcasts/3.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=xQxg-TwVlWo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=3'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/3.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=xQxg-TwVlWo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=3' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/003----CoderDojo-euhiue' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=xQxg-TwVlWo&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=3' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/003----CoderDojo-euhiue' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/30.md b/public/podcasts/30.md
index 533f76774..b8eedbdbd 100644
--- a/public/podcasts/30.md
+++ b/public/podcasts/30.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=j4Us2yBqT2k&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=30'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/30.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=j4Us2yBqT2k&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=30' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/030---Microbit---CoderDojo-e1s61rm' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=j4Us2yBqT2k&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=30' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/030---Microbit---CoderDojo-e1s61rm' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/31.md b/public/podcasts/31.md
index 2ec9c9517..b5e9e7456 100644
--- a/public/podcasts/31.md
+++ b/public/podcasts/31.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=gzgk8GDXSYc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=31'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/31.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=gzgk8GDXSYc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=31' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://creators.spotify.com/pod/show/coderdojo-japan/episodes/031-----CoderDojo-Japan-e2u35h2' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=gzgk8GDXSYc&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=31' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://creators.spotify.com/pod/show/coderdojo-japan/episodes/031-----CoderDojo-Japan-e2u35h2' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/32.md b/public/podcasts/32.md
index e4a06c28b..b850fc967 100644
--- a/public/podcasts/32.md
+++ b/public/podcasts/32.md
@@ -2,7 +2,7 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Dd9IYiF0R6E&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=32'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/32.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
diff --git a/public/podcasts/33.md b/public/podcasts/33.md
index 794cd3ee7..5fad69f50 100644
--- a/public/podcasts/33.md
+++ b/public/podcasts/33.md
@@ -3,7 +3,7 @@ DojoCon Japan 2025 の基調講演「**[プログラミング教育の脱構築
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=hVRxM12xHeY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/33.webp' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
diff --git a/public/podcasts/34.md b/public/podcasts/34.md
index 10e5693a4..e8a7cd54a 100644
--- a/public/podcasts/34.md
+++ b/public/podcasts/34.md
@@ -2,7 +2,7 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=ThOprvWsqkw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/34.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
diff --git a/public/podcasts/4.md b/public/podcasts/4.md
index e44bd0d46..d65437710 100644
--- a/public/podcasts/4.md
+++ b/public/podcasts/4.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=sT5J3NkOXSk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=4'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/4.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=sT5J3NkOXSk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=4' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/004---DojoCon-Japan-euhiuc' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=sT5J3NkOXSk&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=4' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/004---DojoCon-Japan-euhiuc' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/5.md b/public/podcasts/5.md
index 45243ba4e..b19534ffd 100644
--- a/public/podcasts/5.md
+++ b/public/podcasts/5.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=aMyXinLDajs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=5'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/5.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=aMyXinLDajs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=5' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/005---DecaDojo-euhiu3' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=aMyXinLDajs&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=5' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/005---DecaDojo-euhiu3' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/6.md b/public/podcasts/6.md
index 7dccb3ff4..a50bc0706 100644
--- a/public/podcasts/6.md
+++ b/public/podcasts/6.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=6PlvxjocAs4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=6'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/6.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=6PlvxjocAs4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=6' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/006---PR-euhitt' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=6PlvxjocAs4&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=6' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/006---PR-euhitt' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/7.md b/public/podcasts/7.md
index d60bebe91..fcfc96573 100644
--- a/public/podcasts/7.md
+++ b/public/podcasts/7.md
@@ -2,12 +2,12 @@ CoderDojo Kanazawa の寺本さん ([@teramotodaiki](https://twitter.com/teramot
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=Pypw1lXb-XY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=7'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/7.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=Pypw1lXb-XY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=7' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/007---Hack-for-Dojo-euhiv4' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=Pypw1lXb-XY&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=7' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/007---Hack-for-Dojo-euhiv4' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/8.md b/public/podcasts/8.md
index 58fc96368..18d16bddf 100644
--- a/public/podcasts/8.md
+++ b/public/podcasts/8.md
@@ -2,12 +2,12 @@
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=4T1kRlGPHwQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=8'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/8.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=4T1kRlGPHwQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=8' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/008---PR--CASE-Shinjuku-euhiun' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=4T1kRlGPHwQ&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=8' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/008---PR--CASE-Shinjuku-euhiun' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>
 
diff --git a/public/podcasts/9.md b/public/podcasts/9.md
index d9df234ed..d4e0111f6 100644
--- a/public/podcasts/9.md
+++ b/public/podcasts/9.md
@@ -5,12 +5,12 @@ DojoBudokai 2017 - CoderDojo 広島
 
 <div class='episode-cover'>
   <a href='https://www.youtube.com/watch?v=c9CZqYjTDGw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=9'
-     target='_blank' rel='noopener'>
+     target='_blank'>
     <img src='/podcasts/9.png' alt='Cover Photo'>
   </a>
   <div class='btn-cover'>
-    <a class='btn-blue' href='https://www.youtube.com/watch?v=c9CZqYjTDGw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=9' target='_blank' rel='noopener'><i class='fa fa-youtube'></i> YouTube で聴く </a>
-    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/009----CoderDojo-euhiuo' target='_blank' rel='noopener'><i class='fas fa-podcast'></i> Podcast で聴く </a>
+    <a class='btn-blue' href='https://www.youtube.com/watch?v=c9CZqYjTDGw&list=PL94GDfaSQTmJxxnapafkApHYgQUJ6ABUU&index=9' target='_blank'><i class='fa fa-youtube'></i> YouTube で聴く </a>
+    <a class='btn-blue' href='https://podcasters.spotify.com/pod/show/coderdojo-japan/episodes/009----CoderDojo-euhiuo' target='_blank'><i class='fas fa-podcast'></i> Podcast で聴く </a>
   </div>
 </div>