diff --git a/packages/backend/test-federation/test/api/ap/show.test.ts b/packages/backend/test-federation/test/api/ap/show.test.ts
index edb48e635d..3e8c3b3c3e 100644
--- a/packages/backend/test-federation/test/api/ap/show.test.ts
+++ b/packages/backend/test-federation/test/api/ap/show.test.ts
@@ -1,5 +1,10 @@
 import { strictEqual, rejects } from 'node:assert';
-import { createAccount, resolveRemoteUser, sleep, type LoginUser } from '../../utils.js';
+import { createAccount, fetchAdmin, resolveRemoteUser, sleep, type LoginUser } from '../../utils.js';
+
+const [aAdmin, bAdmin] = await Promise.all([
+	fetchAdmin('a.test'),
+	fetchAdmin('b.test'),
+]);
 
 describe('API ap/show', () => {
 	let alice: LoginUser, bob: LoginUser;
@@ -37,15 +42,16 @@ describe('API ap/show', () => {
 		});
 
 		test('resolve a fetched remote user by local profile url (https://a.test/@bob@b.test)', async () => {
-			await alice.client.request('admin/update-meta', { allowExternalApRedirect: true });
+			await aAdmin.client.request('admin/update-meta', { allowExternalApRedirect: true });
 			await resolveRemoteUser('b.test', bob.id, alice);
+
 			const res = await alice.client.request('ap/show', { uri: `https://a.test/@${bob.username}@b.test` });
 			strictEqual(res.type, 'User');
 			strictEqual(res.object.uri, `https://b.test/users/${bob.id}`);
 		});
 
 		test('throws in resolving a fetched remote user by local profile url when allowExternalApRedirect: false', async () => {
-			await alice.client.request('admin/update-meta', { allowExternalApRedirect: false });
+			await aAdmin.client.request('admin/update-meta', { allowExternalApRedirect: false });
 			await resolveRemoteUser('b.test', bob.id, alice);
 
 			await rejects(
@@ -58,9 +64,10 @@ describe('API ap/show', () => {
 		});
 
 		test('throws in resolving a non-fetched remote user by local profile url (https://a.test/@bob@b.test)', async () => {
-			// ユーザーがこのような問い合わせをすることは、ない！
+			// ユーザーがこのような問い合わせをすることは故意でない限りなさそうだし、ActivityPubServerServiceでもこのような仕様である
+
+			await aAdmin.client.request('admin/update-meta', { allowExternalApRedirect: true });
 
-			await alice.client.request('admin/update-meta', { allowExternalApRedirect: true });
 			await rejects(
 				async () => await alice.client.request('ap/show', { uri: `https://a.test/@${bob.username}@b.test` }),
 				(err: any) => {