diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d482d50d0..097a69b687 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Fix: 配信停止したインスタンス一覧が見れなくなる問題を修正
 
 ### Client
+- `/about#federation` ページなどで各インスタンスのチャートが表示されなくなっていた問題を修正
 - Fix: ユーザーページの追加情報のラベルを投稿者のサーバーの絵文字で表示する (#13968)
 
 ### Server
diff --git a/packages/frontend/.storybook/fakes.ts b/packages/frontend/.storybook/fakes.ts
index fdb155261b..9d789a34ff 100644
--- a/packages/frontend/.storybook/fakes.ts
+++ b/packages/frontend/.storybook/fakes.ts
@@ -125,6 +125,35 @@ export function file(isSensitive = false) {
 	};
 }
 
+export function federationInstance(): entities.FederationInstance {
+	return {
+		id: 'someinstanceid',
+		firstRetrievedAt: '2021-01-01T00:00:00.000Z',
+		host: 'misskey-hub.net',
+		usersCount: 10,
+		notesCount: 20,
+		followingCount: 5,
+		followersCount: 15,
+		isNotResponding: false,
+		isSuspended: false,
+		suspensionState: 'none',
+		isBlocked: false,
+		softwareName: 'misskey',
+		softwareVersion: '2024.5.0',
+		openRegistrations: false,
+		name: 'Misskey Hub',
+		description: '',
+		maintainerName: '',
+		maintainerEmail: '',
+		isSilenced: false,
+		iconUrl: 'https://github.com/misskey-dev/misskey/blob/master/packages/frontend/assets/about-icon.png?raw=true',
+		faviconUrl: '',
+		themeColor: '',
+		infoUpdatedAt: '',
+		latestRequestReceivedAt: '',
+	};
+}
+
 export function userDetailed(id = 'someuserid', username = 'miskist', host = 'misskey-hub.net', name = 'Misskey User'): entities.UserDetailed {
 	return {
 		id,
diff --git a/packages/frontend/.storybook/generate.tsx b/packages/frontend/.storybook/generate.tsx
index d21eea9d17..7b6c86447e 100644
--- a/packages/frontend/.storybook/generate.tsx
+++ b/packages/frontend/.storybook/generate.tsx
@@ -403,6 +403,7 @@ function toStories(component: string): Promise<string> {
 		glob('src/components/MkSignupServerRules.vue'),
 		glob('src/components/MkUserSetupDialog.vue'),
 		glob('src/components/MkUserSetupDialog.*.vue'),
+		glob('src/components/MkInstanceCardMini.vue'),
 		glob('src/components/MkInviteCode.vue'),
 		glob('src/pages/user/home.vue'),
 	]);
diff --git a/packages/frontend/src/components/MkChart.stories.impl.ts b/packages/frontend/src/components/MkChart.stories.impl.ts
index 6b0cc3b858..d1d17f6dc0 100644
--- a/packages/frontend/src/components/MkChart.stories.impl.ts
+++ b/packages/frontend/src/components/MkChart.stories.impl.ts
@@ -29,7 +29,7 @@ function getChartArray(seed: string, limit: number, option?: { accumulate?: bool
 	return array;
 }
 
-function getChartResolver(fields: string[], option?: { accumulate?: boolean, mulMap?: Record<string, number> }): HttpResponseResolver<PathParams, DefaultBodyType, JsonBodyType> {
+export function getChartResolver(fields: string[], option?: { accumulate?: boolean, mulMap?: Record<string, number> }): HttpResponseResolver<PathParams, DefaultBodyType, JsonBodyType> {
 	return ({ request }) => {
 		action(`GET ${request.url}`)();
 		const limitParam = new URL(request.url).searchParams.get('limit');
diff --git a/packages/frontend/src/components/MkInstanceCardMini.stories.impl.ts b/packages/frontend/src/components/MkInstanceCardMini.stories.impl.ts
new file mode 100644
index 0000000000..a069a0eb8e
--- /dev/null
+++ b/packages/frontend/src/components/MkInstanceCardMini.stories.impl.ts
@@ -0,0 +1,64 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+/* eslint-disable @typescript-eslint/explicit-function-return-type */
+import { StoryObj } from '@storybook/vue3';
+import { HttpResponse, http } from 'msw';
+import { federationInstance } from '../../.storybook/fakes.js';
+import { commonHandlers } from '../../.storybook/mocks.js';
+import MkInstanceCardMini from './MkInstanceCardMini.vue';
+import { getChartResolver } from './MkChart.stories.impl.js';
+export const Default = {
+	render(args) {
+		return {
+			components: {
+				MkInstanceCardMini,
+			},
+			setup() {
+				return {
+					args,
+				};
+			},
+			computed: {
+				props() {
+					return {
+						...this.args,
+					};
+				},
+			},
+			template: '<MkInstanceCardMini v-bind="props" />',
+		};
+	},
+	args: {
+		instance: federationInstance(),
+	},
+	parameters: {
+		layout: 'centered',
+		msw: {
+			handlers: [
+				...commonHandlers,
+				http.get('/undefined/preview.webp', async ({ request }) => {
+					const urlStr = new URL(request.url).searchParams.get('url');
+					if (urlStr == null) {
+						return new HttpResponse(null, { status: 404 });
+					}
+					const url = new URL(urlStr);
+
+					if (url.href.startsWith('https://github.com/misskey-dev/misskey/blob/master/packages/frontend/assets/')) {
+						const image = await (await fetch(`client-assets/${url.pathname.split('/').pop()}`)).blob();
+						return new HttpResponse(image, {
+							headers: {
+								'Content-Type': 'image/jpeg',
+							},
+						});
+					} else {
+						return new HttpResponse(null, { status: 404 });
+					}
+				}),
+				http.get('/api/charts/instance', getChartResolver(['requests.received'])),
+			],
+		},
+	},
+} satisfies StoryObj<typeof MkInstanceCardMini>;
diff --git a/packages/frontend/src/components/MkInstanceCardMini.vue b/packages/frontend/src/components/MkInstanceCardMini.vue
index e26aef0f69..17c974dd04 100644
--- a/packages/frontend/src/components/MkInstanceCardMini.vue
+++ b/packages/frontend/src/components/MkInstanceCardMini.vue
@@ -29,8 +29,8 @@ const chartValues = ref<number[] | null>(null);
 
 misskeyApiGet('charts/instance', { host: props.instance.host, limit: 16 + 1, span: 'day' }).then(res => {
 	// 今日のぶんの値はまだ途中の値であり、それも含めると大抵の場合前日よりも下降しているようなグラフになってしまうため今日は弾く
-	res['requests.received'].splice(0, 1);
-	chartValues.value = res['requests.received'];
+	res.requests.received.splice(0, 1);
+	chartValues.value = res.requests.received;
 });
 
 function getInstanceIcon(instance): string {