diff --git a/docs/presentations/2026-08-06-ai-plugins-intro.html b/docs/presentations/2026-08-06-ai-plugins-intro.html
index 3f72904..70f4efe 100644
--- a/docs/presentations/2026-08-06-ai-plugins-intro.html
+++ b/docs/presentations/2026-08-06-ai-plugins-intro.html
@@ -73,7 +73,7 @@
 ;" data-size="16:9">
 <h1 id="ai-plugins">ai-plugins</h1>
 <h2 id="ndf%E5%AE%9F%E9%9A%9B%E3%81%AE%E3%81%A8%E3%81%93%E3%82%8D-%E3%81%A9%E3%81%86%E4%BD%BF%E3%81%86%E3%81%AE%E3%81%8B">NDF、実際のところ どう使うのか</h2>
-<p>社内勉強会 / 2026-08-06<br />
+<p>2026-08-06<br />
 Claude Code・Codex CLI・Kiro CLI 対応</p>
 </section>
 </foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="2" data-paginate="true" data-header="ai-plugins / NDF v4.20.1" data-theme="default" data-style="section {
diff --git a/docs/presentations/2026-08-06-ai-plugins-intro.md b/docs/presentations/2026-08-06-ai-plugins-intro.md
index dbc0cfc..acc770a 100644
--- a/docs/presentations/2026-08-06-ai-plugins-intro.md
+++ b/docs/presentations/2026-08-06-ai-plugins-intro.md
@@ -46,7 +46,7 @@ style: |
 
 ## NDF、実際のところ どう使うのか
 
-社内勉強会 / 2026-08-06
+2026-08-06
 Claude Code・Codex CLI・Kiro CLI 対応
 
 <!--
diff --git a/docs/presentations/2026-08-06-ai-plugins-intro.pdf b/docs/presentations/2026-08-06-ai-plugins-intro.pdf
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diff --git a/docs/presentations/README.md b/docs/presentations/README.md
index 3bd2df5..6ba536d 100644
--- a/docs/presentations/README.md
+++ b/docs/presentations/README.md
@@ -1,6 +1,6 @@
 # プレゼンテーション資料
 
-社内勉強会などで使うスライド資料を Marp 形式で管理します。
+発表用のスライド資料を Marp 形式で管理します。
 
 公開先: **https://devbasex.github.io/ai-plugins/presentations/**
 
diff --git a/docs/presentations/index.html b/docs/presentations/index.html
index aafb4c6..b0db47a 100644
--- a/docs/presentations/index.html
+++ b/docs/presentations/index.html
@@ -37,7 +37,7 @@
 
 <h1>プレゼンテーション資料</h1>
 
-<p>社内勉強会などで使うスライド資料です。ソースは
+<p>発表用のスライド資料です。ソースは
 <a href="https://github.com/devbasex/ai-plugins/tree/main/docs/presentations">devbasex/ai-plugins</a> で管理しています。</p>
 
 <div class="card">