diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 32bf47c209..b187fe2473 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -473,6 +473,9 @@ createAccount: "アカウントを作成"
 existingAccount: "既存のアカウント"
 regenerate: "再生成"
 fontSize: "フォントサイズ"
+mediaListWithOneImageAppearance: "画像が1枚のみのメディアリストの高さ"
+expandAsImage: "画像に応じて拡張"
+fixTo: "{x}に固定"
 noFollowRequests: "フォロー申請はありません"
 openImageInNewTab: "画像を新しいタブで開く"
 dashboard: "ダッシュボード"
diff --git a/packages/frontend/src/components/MkMediaList.vue b/packages/frontend/src/components/MkMediaList.vue
index 7cfe5d5f8f..9178a3dfe4 100644
--- a/packages/frontend/src/components/MkMediaList.vue
+++ b/packages/frontend/src/components/MkMediaList.vue
@@ -2,7 +2,10 @@
 <div>
 	<XBanner v-for="media in mediaList.filter(media => !previewable(media))" :key="media.id" :media="media"/>
 	<div v-if="mediaList.filter(media => previewable(media)).length > 0" :class="$style.container">
-		<div ref="gallery" :class="[$style.medias, count <= 4 ? $style['n' + count] : $style.nMany]">
+		<div ref="gallery" :class="[
+			$style.medias,
+			count <= 4 ? $style['n' + count] : $style.nMany,
+			$style[`n1${defaultStore.reactiveState.mediaListWithOneImageAppearance.value}`]]">
 			<template v-for="media in mediaList.filter(media => previewable(media))">
 				<XVideo v-if="media.type.startsWith('video')" :key="`video:${media.id}`" :class="$style.media" :video="media"/>
 				<XImage v-else-if="media.type.startsWith('image')" :key="`image:${media.id}`" :class="$style.media" class="image" :data-id="media.id" :image="media" :raw="raw"/>
@@ -23,6 +26,7 @@ import XImage from '@/components/MkMediaImage.vue';
 import XVideo from '@/components/MkMediaVideo.vue';
 import * as os from '@/os';
 import { FILE_TYPE_BROWSERSAFE } from '@/const';
+import { defaultStore } from '@/store';
 
 const props = defineProps<{
 	mediaList: misskey.entities.DriveFile[];
@@ -160,7 +164,15 @@ const previewable = (file: misskey.entities.DriveFile): boolean => {
 	&.n1 {
 		grid-template-rows: 1fr;
 		min-height: 64px;
-		max-height: max(min(calc(var(--containerHeight, 100svh) * 0.5), 50svh, 334px), 64px);
+		max-height: 128px;
+
+		&.n1expand {
+			max-height: max(min(calc(var(--containerHeight, 100svh) * 0.5), 50svh, 334px), 64px);
+		}
+
+		&.n116_9 {
+			aspect-ratio: 16/9;
+		}
 	}
 
 	&.n2 {
diff --git a/packages/frontend/src/components/MkRadio.vue b/packages/frontend/src/components/MkRadio.vue
index fcf454c77a..5db2f5ee6d 100644
--- a/packages/frontend/src/components/MkRadio.vue
+++ b/packages/frontend/src/components/MkRadio.vue
@@ -24,7 +24,7 @@ import { } from 'vue';
 const props = defineProps<{
 	modelValue: any;
 	value: any;
-	disabled: boolean;
+	disabled?: boolean;
 }>();
 
 const emit = defineEmits<{
diff --git a/packages/frontend/src/components/MkRadios.vue b/packages/frontend/src/components/MkRadios.vue
index 8590ccf9ae..5ef686c4dd 100644
--- a/packages/frontend/src/components/MkRadios.vue
+++ b/packages/frontend/src/components/MkRadios.vue
@@ -1,5 +1,5 @@
 <script lang="ts">
-import { defineComponent, h } from 'vue';
+import { VNode, defineComponent, h } from 'vue';
 import MkRadio from './MkRadio.vue';
 
 export default defineComponent({
@@ -22,31 +22,32 @@ export default defineComponent({
 		},
 	},
 	render() {
+		if (!this.$slots.default) return null;
 		let options = this.$slots.default();
 		const label = this.$slots.label && this.$slots.label();
 		const caption = this.$slots.caption && this.$slots.caption();
 
 		// なぜかFragmentになることがあるため
-		if (options.length === 1 && options[0].props == null) options = options[0].children;
+		if (options.length === 1 && options[0].props == null) options = options[0].children as VNode[];
 
 		return h('div', {
 			class: 'novjtcto',
 		}, [
 			...(label ? [h('div', {
 				class: 'label',
-			}, [label])] : []),
+			}, () => [label])] : []),
 			h('div', {
 				class: 'body',
 			}, options.map(option => h(MkRadio, {
 				key: option.key,
-				value: option.props.value,
+				value: option.props?.value,
 				modelValue: this.value,
 				'onUpdate:modelValue': value => this.value = value,
-			}, option.children)),
+			}, () => option.children)),
 			),
 			...(caption ? [h('div', {
 				class: 'caption',
-			}, [caption])] : []),
+			}, () => [caption])] : []),
 		]);
 	},
 });
diff --git a/packages/frontend/src/pages/settings/general.vue b/packages/frontend/src/pages/settings/general.vue
index b960927642..4ca4454203 100644
--- a/packages/frontend/src/pages/settings/general.vue
+++ b/packages/frontend/src/pages/settings/general.vue
@@ -82,10 +82,8 @@
 
 			<MkRadios v-model="mediaListWithOneImageAppearance">
 				<template #label>{{ i18n.ts.mediaListWithOneImageAppearance }}</template>
-				<option :value="null"><span style="font-size: 14px;">Aa</span></option>
-				<option value="1"><span style="font-size: 15px;">Aa</span></option>
-				<option value="2"><span style="font-size: 16px;">Aa</span></option>
-				<option value="3"><span style="font-size: 17px;">Aa</span></option>
+				<option value="expand">{{ i18n.ts.expandAsImage }}</option>
+				<option value="16_9">{{ i18n.t('fixTo', { x: '16:9' }) }}</option>
 			</MkRadios>
 		</div>
 	</FormSection>
@@ -176,6 +174,7 @@ const enableInfiniteScroll = computed(defaultStore.makeGetterSetter('enableInfin
 const useReactionPickerForContextMenu = computed(defaultStore.makeGetterSetter('useReactionPickerForContextMenu'));
 const squareAvatars = computed(defaultStore.makeGetterSetter('squareAvatars'));
 const aiChanMode = computed(defaultStore.makeGetterSetter('aiChanMode'));
+const mediaListWithOneImageAppearance = computed(defaultStore.makeGetterSetter('mediaListWithOneImageAppearance'));
 
 watch(lang, () => {
 	miLocalStorage.setItem('lang', lang.value as string);
diff --git a/packages/frontend/src/pages/settings/preferences-backups.vue b/packages/frontend/src/pages/settings/preferences-backups.vue
index 28e39236f7..d43bc2c51b 100644
--- a/packages/frontend/src/pages/settings/preferences-backups.vue
+++ b/packages/frontend/src/pages/settings/preferences-backups.vue
@@ -88,6 +88,7 @@ const defaultStoreSaveKeys: (keyof typeof defaultStore['state'])[] = [
 	'squareAvatars',
 	'numberOfPageCache',
 	'aiChanMode',
+	'mediaListWithOneImageAppearance',
 ];
 const coldDeviceStorageSaveKeys: (keyof typeof ColdDeviceStorage.default)[] = [
 	'lightTheme',
diff --git a/packages/frontend/src/store.ts b/packages/frontend/src/store.ts
index f50812ca04..65d5bab3f6 100644
--- a/packages/frontend/src/store.ts
+++ b/packages/frontend/src/store.ts
@@ -304,7 +304,7 @@ export const defaultStore = markRaw(new Storage('base', {
 	},
 	mediaListWithOneImageAppearance: {
 		where: 'device',
-		default: 'expand' as 'expand' | '16:9',
+		default: 'expand' as 'expand' | '16_9',
 	},
 }));