diff --git a/packages/backend/src/core/entities/NoteEntityService.ts b/packages/backend/src/core/entities/NoteEntityService.ts
index c6e176d05..3e1f094fc 100644
--- a/packages/backend/src/core/entities/NoteEntityService.ts
+++ b/packages/backend/src/core/entities/NoteEntityService.ts
@@ -22,6 +22,7 @@ import type { ReactionService } from '../ReactionService.js';
 import type { UserEntityService } from './UserEntityService.js';
 import type { DriveFileEntityService } from './DriveFileEntityService.js';
 
+// is-renote.tsとよしなにリンク
 function isPureRenote(note: MiNote): note is MiNote & { renoteId: MiNote['id']; renote: MiNote } {
 	return (
 		note.renote != null &&