diff --git a/CLAUDE.md b/CLAUDE.md
index 94bd74a..9db38f6 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -132,3 +132,4 @@ project/
 - Never work directly on the `master` tag - always create feature tags
 - Run typecheck before committing
 - Use `/task:next` to automatically get and start implementing tasks
+- When you Question or Answer to user, Use Korean.
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