diff --git a/app/features/user-page/in-game-name.test.ts b/app/features/user-page/in-game-name.test.ts
index 9c98185aa..187b9ca85 100644
--- a/app/features/user-page/in-game-name.test.ts
+++ b/app/features/user-page/in-game-name.test.ts
@@ -19,6 +19,9 @@ describe("inGameNameIsValid", () => {
 			"あ、い。#1234",
 			"テスト〜#1234",
 			"ロー・ル#1234",
+			"こゝろ#1234",
+			"すゞ#1234",
+			"ヽヾ#1234",
 		];
 
 		for (const name of validNames) {
diff --git a/app/features/user-page/in-game-name.ts b/app/features/user-page/in-game-name.ts
index bdfaedec4..9f0922ea1 100644
--- a/app/features/user-page/in-game-name.ts
+++ b/app/features/user-page/in-game-name.ts
@@ -40,12 +40,12 @@ export const IN_GAME_NAME_CHARACTER_CATEGORIES = [
 	{
 		id: "hiragana",
 		label: "inGameName.categories.hiragana",
-		characters: range(0x3041, 0x3096),
+		characters: [...range(0x3041, 0x3096), ..."ゝゞ"],
 	},
 	{
 		id: "katakana",
 		label: "inGameName.categories.katakana",
-		characters: range(0x30a1, 0x30fa),
+		characters: [...range(0x30a1, 0x30fa), ..."ヽヾ"],
 	},
 	{
 		id: "cjk-symbols",