diff --git a/packages/frontend/src/components/MkExtensionInstaller.stories.impl.ts b/packages/frontend/src/components/MkExtensionInstaller.stories.impl.ts
new file mode 100644
index 0000000000..6763f7c546
--- /dev/null
+++ b/packages/frontend/src/components/MkExtensionInstaller.stories.impl.ts
@@ -0,0 +1,83 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { StoryObj } from '@storybook/vue3';
+import MkExtensionInstaller from './MkExtensionInstaller.vue';
+import lightTheme from '@@/themes/_light.json5';
+
+export const Plugin = {
+	render(args) {
+		return {
+			components: {
+				MkExtensionInstaller,
+			},
+			setup() {
+				return {
+					args,
+				};
+			},
+			computed: {
+				props() {
+					return {
+						...this.args,
+					};
+				},
+			},
+			template: '<MkExtensionInstaller v-bind="props" />',
+		};
+	},
+	args: {
+		extension: {
+			type: 'plugin',
+			raw: '"do nothing"',
+			meta: {
+				name: 'do nothing plugin',
+				version: '1.0',
+				author: 'syuilo and misskey-project',
+				description: 'a plugin that does nothing',
+				permissions: ['read:account'],
+				config: {
+					'doNothing': true,
+				},
+			},
+		},
+	},
+	parameters: {
+		layout: 'centered',
+	},
+} satisfies StoryObj<typeof MkExtensionInstaller>;
+
+export const Theme = {
+	render(args) {
+		return {
+			components: {
+				MkExtensionInstaller,
+			},
+			setup() {
+				return {
+					args,
+				};
+			},
+			computed: {
+				props() {
+					return {
+						...this.args,
+					};
+				},
+			},
+			template: '<MkExtensionInstaller v-bind="props" />',
+		};
+	},
+	args: {
+		extension: {
+			type: 'theme',
+			raw: JSON.stringify(lightTheme),
+			meta: lightTheme,
+		},
+	},
+	parameters: {
+		layout: 'centered',
+	},
+} satisfies StoryObj<typeof MkExtensionInstaller>;