11 files changed, 6 insertions, 93 deletions
diff --git a/files/ja/web/accessibility/index/index.html b/files/ja/web/accessibility/index/index.html
deleted file mode 100644
index 3e2035d320..0000000000
--- a/files/ja/web/accessibility/index/index.html
+++ /dev/null
@@ -1,11 +0,0 @@
----
-title: アクセシビリティ関連ドキュメントの索引
-slug: Web/Accessibility/Index
-tags:
-  - Accessibility
-  - Index
-translation_of: Web/Accessibility/Index
----
-<p class="summary"><span class="seoSummary">このドキュメントは、Mozilla Developer Network サイト上の、すべてのアクセシビリティの記事へのリンクの一覧を提供します。</span></p>
-
-<p>{{Index("/ja/docs/Web/Accessibility")}}</p>
diff --git a/files/ja/web/api/eventsource/onerror/index.html b/files/ja/web/api/eventsource/error_event/index.html
index 1629027780..31df170d43 100644
--- a/files/ja/web/api/eventsource/onerror/index.html
+++ b/files/ja/web/api/eventsource/error_event/index.html
@@ -1,6 +1,6 @@
 ---
 title: EventSource.onerror
-slug: Web/API/EventSource/onerror
+slug: Web/API/EventSource/error_event
 tags:
   - API
   - EventSource
@@ -9,6 +9,7 @@ tags:
   - プロパティ
   - リファレンス
 translation_of: Web/API/EventSource/onerror
+original_slug: Web/API/EventSource/onerror
 ---
 <div>{{APIRef('WebSockets API')}}</div>
 
diff --git a/files/ja/web/api/eventsource/onmessage/index.html b/files/ja/web/api/eventsource/message_event/index.html
index 0b0f8c7c6b..6b35ddf7d2 100644
--- a/files/ja/web/api/eventsource/onmessage/index.html
+++ b/files/ja/web/api/eventsource/message_event/index.html
@@ -1,6 +1,6 @@
 ---
 title: EventSource.onmessage
-slug: Web/API/EventSource/onmessage
+slug: Web/API/EventSource/message_event
 tags:
   - API
   - EventSource
@@ -10,6 +10,7 @@ tags:
   - プロパティ
   - リファレンス
 translation_of: Web/API/EventSource/onmessage
+original_slug: Web/API/EventSource/onmessage
 ---
 <div>{{APIRef('WebSockets API')}}</div>
 
diff --git a/files/ja/web/api/mediaquerylist/onchange/index.html b/files/ja/web/api/mediaquerylist/change_event/index.html
index 5539cdd3c7..388dad93d3 100644
--- a/files/ja/web/api/mediaquerylist/onchange/index.html
+++ b/files/ja/web/api/mediaquerylist/change_event/index.html
@@ -1,6 +1,6 @@
 ---
 title: MediaQueryList.onchange
-slug: Web/API/MediaQueryList/onchange
+slug: Web/API/MediaQueryList/change_event
 tags:
   - API
   - CSSOM View
@@ -13,6 +13,7 @@ tags:
   - プロパティ
   - メディアクエリ
 translation_of: Web/API/MediaQueryList/onchange
+original_slug: Web/API/MediaQueryList/onchange
 ---
 <p>{{APIRef("CSSOM")}}</p>
 
diff --git a/files/ja/web/guide/index/index.html b/files/ja/web/guide/index/index.html
deleted file mode 100644
index 9f0d683123..0000000000
--- a/files/ja/web/guide/index/index.html
+++ /dev/null
@@ -1,11 +0,0 @@
----
-title: 索引
-slug: Web/Guide/Index
-tags:
-  - Index
-  - ガイド
-translation_of: Web/Guide/Index
----
-<div>{{MDNSidebar}}{{IncludeSubnav("/ja/docs/MDN")}}</div>
-
-<p>{{Index("/ja/docs/Web/Guide")}}</p>
diff --git a/files/ja/web/html/index/index.html b/files/ja/web/html/index/index.html
deleted file mode 100644
index eadaa1c4d0..0000000000
--- a/files/ja/web/html/index/index.html
+++ /dev/null
@@ -1,10 +0,0 @@
----
-title: HTML ドキュメントの索引
-slug: Web/HTML/Index
-tags:
-  - HTML
-  - Index
-  - MDN Meta
-translation_of: Web/HTML/Index
----
-<p>{{Index("/ja/docs/Web/HTML")}} <span class="seoSummary">利用可能なすべての HTML に関する文書の包括的な索引リストです。</span></p>
diff --git a/files/ja/web/http/index/index.html b/files/ja/web/http/index/index.html
deleted file mode 100644
index acbf54eb38..0000000000
--- a/files/ja/web/http/index/index.html
+++ /dev/null
@@ -1,13 +0,0 @@
----
-title: 索引
-slug: Web/HTTP/Index
-tags:
-  - HTTP
-  - Index
-translation_of: Web/HTTP/Index
----
-<div>{{HTTPSidebar}}</div>
-
-<p>このページは概要やタグに沿った MDN のすべての HTTP ページの一覧です。</p>
-
-<p>{{Index("/ja/docs/Web/HTTP")}}</p>
diff --git a/files/ja/web/mathml/index/index.html b/files/ja/web/mathml/index/index.html
deleted file mode 100644
index a32dfa6b75..0000000000
--- a/files/ja/web/mathml/index/index.html
+++ /dev/null
@@ -1,9 +0,0 @@
----
-title: MathML 関連ドキュメントの索引
-slug: Web/MathML/Index
-tags:
-  - Index
-  - MathML
-translation_of: Web/MathML/Index
----
-<p>{{Index("/ja/docs/Web/MathML")}}</p>
diff --git a/files/ja/web/svg/index/index.html b/files/ja/web/svg/index/index.html
deleted file mode 100644
index 84bc4161f7..0000000000
--- a/files/ja/web/svg/index/index.html
+++ /dev/null
@@ -1,9 +0,0 @@
----
-title: SVG 関連ドキュメントの索引
-slug: Web/SVG/Index
-tags:
-  - Index
-  - SVG
-translation_of: Web/SVG/Index
----
-<p>{{Index("/ja/docs/Web/SVG")}}</p>
diff --git a/files/ja/web/xpath/index/index.html b/files/ja/web/xpath/index/index.html
deleted file mode 100644
index e90e8fb344..0000000000
--- a/files/ja/web/xpath/index/index.html
+++ /dev/null
@@ -1,15 +0,0 @@
----
-title: Index
-slug: Web/XPath/Index
-tags:
-  - Index
-  - Reference
-  - XPath
-  - XSLT
-translation_of: Web/XPath/Index
----
-<p>{{Index("/ja/docs/Web/XPath")}}</p>
-
-<div class="boxed translate-rendered text-content">
-<p>{{QuickLinksWithSubpages("/ja/docs/Web/XPath")}}</p>
-</div>
diff --git a/files/ja/web/xslt/index/index.html b/files/ja/web/xslt/index/index.html
deleted file mode 100644
index 91bb5362a3..0000000000
--- a/files/ja/web/xslt/index/index.html
+++ /dev/null
@@ -1,12 +0,0 @@
----
-title: Index
-slug: Web/XSLT/Index
-tags:
-  - Index
-  - XSLT
-  - リファレンス
-translation_of: Web/XSLT/Index
----
-<p>{{XSLTRef}}{{QuickLinksWithSubpages("/ja/docs/Web/XSLT")}}</p>
-
-<p>{{Index("/ja/docs/XSLT")}}</p>