diff --git a/docs/ja-JP/README.md b/docs/ja-JP/README.md
index 0a99c37e..06c5f8f1 100644
--- a/docs/ja-JP/README.md
+++ b/docs/ja-JP/README.md
@@ -122,12 +122,12 @@
 git clone https://github.com/affaan-m/everything-claude-code.git
 
 # 共通ルールをインストール（必須）
-cp -r everything-claude-code/rules/common/* ~/.claude/rules/
+cp -r everything-claude-code/rules/common ~/.claude/rules/common
 
 # 言語固有ルールをインストール（スタックを選択）
-cp -r everything-claude-code/rules/typescript/* ~/.claude/rules/
-cp -r everything-claude-code/rules/python/* ~/.claude/rules/
-cp -r everything-claude-code/rules/golang/* ~/.claude/rules/
+cp -r everything-claude-code/rules/typescript ~/.claude/rules/typescript
+cp -r everything-claude-code/rules/python ~/.claude/rules/python
+cp -r everything-claude-code/rules/golang ~/.claude/rules/golang
 ```
 
 ### ステップ3：使用開始
@@ -462,15 +462,15 @@ Duplicate hook file detected: ./hooks/hooks.json is already resolved to a loaded
 >
 > # オプション A：ユーザーレベルルール（すべてのプロジェクトに適用）
 > mkdir -p ~/.claude/rules
-> cp -r everything-claude-code/rules/common/* ~/.claude/rules/
-> cp -r everything-claude-code/rules/typescript/* ~/.claude/rules/   # スタックを選択
-> cp -r everything-claude-code/rules/python/* ~/.claude/rules/
-> cp -r everything-claude-code/rules/golang/* ~/.claude/rules/
+> cp -r everything-claude-code/rules/common ~/.claude/rules/common
+> cp -r everything-claude-code/rules/typescript ~/.claude/rules/typescript   # スタックを選択
+> cp -r everything-claude-code/rules/python ~/.claude/rules/python
+> cp -r everything-claude-code/rules/golang ~/.claude/rules/golang
 >
 > # オプション B：プロジェクトレベルルール（現在のプロジェクトのみ）
 > mkdir -p .claude/rules
-> cp -r everything-claude-code/rules/common/* .claude/rules/
-> cp -r everything-claude-code/rules/typescript/* .claude/rules/     # スタックを選択
+> cp -r everything-claude-code/rules/common .claude/rules/common
+> cp -r everything-claude-code/rules/typescript .claude/rules/typescript     # スタックを選択
 > ```
 
 ---
@@ -487,10 +487,10 @@ git clone https://github.com/affaan-m/everything-claude-code.git
 cp everything-claude-code/agents/*.md ~/.claude/agents/
 
 # ルール（共通 + 言語固有）をコピー
-cp -r everything-claude-code/rules/common/* ~/.claude/rules/
-cp -r everything-claude-code/rules/typescript/* ~/.claude/rules/   # スタックを選択
-cp -r everything-claude-code/rules/python/* ~/.claude/rules/
-cp -r everything-claude-code/rules/golang/* ~/.claude/rules/
+cp -r everything-claude-code/rules/common ~/.claude/rules/common
+cp -r everything-claude-code/rules/typescript ~/.claude/rules/typescript   # スタックを選択
+cp -r everything-claude-code/rules/python ~/.claude/rules/python
+cp -r everything-claude-code/rules/golang ~/.claude/rules/golang
 
 # コマンドをコピー
 cp everything-claude-code/commands/*.md ~/.claude/commands/
diff --git a/docs/ja-JP/skills/configure-ecc/SKILL.md b/docs/ja-JP/skills/configure-ecc/SKILL.md
index 9c289eb4..b8b73d5f 100644
--- a/docs/ja-JP/skills/configure-ecc/SKILL.md
+++ b/docs/ja-JP/skills/configure-ecc/SKILL.md
@@ -169,13 +169,13 @@ Options:
 
 インストールを実行：
 ```bash
-# 共通ルール（rules/ にフラットコピー）
-cp -r $ECC_ROOT/rules/common/* $TARGET/rules/
+# 共通ルール
+cp -r $ECC_ROOT/rules/common $TARGET/rules/common
 
-# 言語固有のルール（rules/ にフラットコピー）
-cp -r $ECC_ROOT/rules/typescript/* $TARGET/rules/   # 選択された場合
-cp -r $ECC_ROOT/rules/python/* $TARGET/rules/        # 選択された場合
-cp -r $ECC_ROOT/rules/golang/* $TARGET/rules/        # 選択された場合
+# 言語固有のルール（言語別ディレクトリを保持）
+cp -r $ECC_ROOT/rules/typescript $TARGET/rules/typescript   # 選択された場合
+cp -r $ECC_ROOT/rules/python $TARGET/rules/python            # 選択された場合
+cp -r $ECC_ROOT/rules/golang $TARGET/rules/golang            # 選択された場合
 ```
 
 **重要**: ユーザーが言語固有のルールを選択したが、共通ルールを選択しなかった場合、警告します：
diff --git a/skills/configure-ecc/SKILL.md b/skills/configure-ecc/SKILL.md
index 50f9ad86..679ae7fd 100644
--- a/skills/configure-ecc/SKILL.md
+++ b/skills/configure-ecc/SKILL.md
@@ -234,13 +234,13 @@ Options:
 
 Execute installation:
 ```bash
-# Common rules (flat copy into rules/)
-cp -r $ECC_ROOT/rules/common/* $TARGET/rules/
+# Common rules
+cp -r $ECC_ROOT/rules/common $TARGET/rules/common
 
-# Language-specific rules (flat copy into rules/)
-cp -r $ECC_ROOT/rules/typescript/* $TARGET/rules/   # if selected
-cp -r $ECC_ROOT/rules/python/* $TARGET/rules/        # if selected
-cp -r $ECC_ROOT/rules/golang/* $TARGET/rules/        # if selected
+# Language-specific rules (preserve per-language directories)
+cp -r $ECC_ROOT/rules/typescript $TARGET/rules/typescript   # if selected
+cp -r $ECC_ROOT/rules/python $TARGET/rules/python            # if selected
+cp -r $ECC_ROOT/rules/golang $TARGET/rules/golang            # if selected
 ```
 
 **Important**: If the user selects any language-specific rules but NOT common rules, warn them: