diff --git a/packages/backend/migration/1662489803045-remove-rooms.js b/packages/backend/migration/1662489803045-remove-rooms.js
new file mode 100644
index 000000000..77ea85bac
--- /dev/null
+++ b/packages/backend/migration/1662489803045-remove-rooms.js
@@ -0,0 +1,11 @@
+export class removeRooms1662489803045 {
+	name = 'removeRooms1662489803045'
+
+	async up(queryRunner) {
+		await queryRunner.query(`ALTER TABLE "user_profile" DROP COLUMN "room"`);
+	}
+
+	async down(queryRunner) {
+		await queryRunner.query(`ALTER TABLE "user_profile" ADD "room" jsonb NOT NULL DEFAULT '{}'`);
+	}
+}
diff --git a/packages/backend/src/models/entities/user-profile.ts b/packages/backend/src/models/entities/user-profile.ts
index 251b998be..224bbe3cd 100644
--- a/packages/backend/src/models/entities/user-profile.ts
+++ b/packages/backend/src/models/entities/user-profile.ts
@@ -124,13 +124,6 @@ export class UserProfile {
 	})
 	public clientData: Record<string, any>;
 
-	// TODO: そのうち消す
-	@Column('jsonb', {
-		default: {},
-		comment: 'The room data of the User.',
-	})
-	public room: Record<string, any>;
-
 	@Column('boolean', {
 		default: false,
 	})