diff --git a/src/models/repositories/games/reversi/matching.ts b/src/models/repositories/games/reversi/matching.ts
index 2696f1f8ea..0cf3b9fd35 100644
--- a/src/models/repositories/games/reversi/matching.ts
+++ b/src/models/repositories/games/reversi/matching.ts
@@ -3,21 +3,21 @@ import { ReversiMatching } from '@/models/entities/games/reversi/matching';
 import { Users } from '../../../index';
 import { awaitAll } from '@/prelude/await-all';
 import { User } from '@/models/entities/user';
-import { Resolved } from '@/prelude/types';
+import { SchemaType } from '@/misc/schema';
 
-export type PackedReversiMatching = Resolved<ReturnType<ReversiMatchingRepository['pack']>>;
+export type PackedReversiMatching = SchemaType<typeof packedReversiMatchingSchema>;
 
 @EntityRepository(ReversiMatching)
 export class ReversiMatchingRepository extends Repository<ReversiMatching> {
 	public async pack(
 		src: ReversiMatching['id'] | ReversiMatching,
 		me: { id: User['id'] }
-	) {
+	): Promise<PackedReversiMatching> {
 		const matching = typeof src === 'object' ? src : await this.findOneOrFail(src);
 
 		return await awaitAll({
 			id: matching.id,
-			createdAt: matching.createdAt,
+			createdAt: matching.createdAt.toISOString(),
 			parentId: matching.parentId,
 			parent: Users.pack(matching.parentId, me, {
 				detail: true
@@ -29,3 +29,43 @@ export class ReversiMatchingRepository extends Repository<ReversiMatching> {
 		});
 	}
 }
+
+export const packedReversiMatchingSchema = {
+	type: 'object' as const,
+	optional: false as const, nullable: false as const,
+	properties: {
+		id: {
+			type: 'string' as const,
+			optional: false as const, nullable: false as const,
+			format: 'id',
+			example: 'xxxxxxxxxx',
+		},
+		createdAt: {
+			type: 'string' as const,
+			optional: false as const, nullable: false as const,
+			format: 'date-time',
+		},
+		parentId: {
+			type: 'string' as const,
+			optional: false as const, nullable: false as const,
+			format: 'id',
+			example: 'xxxxxxxxxx',
+		},
+		parent: {
+			type: 'object' as const,
+			optional: false as const, nullable: true as const,
+			ref: 'User' as const,
+		},
+		childId: {
+			type: 'string' as const,
+			optional: false as const, nullable: false as const,
+			format: 'id',
+			example: 'xxxxxxxxxx',
+		},
+		child: {
+			type: 'object' as const,
+			optional: false as const, nullable: false as const,
+			ref: 'User' as const,
+		},
+	}
+};