diff --git a/packages/frontend/src/components/MkMediaBanner.vue b/packages/frontend/src/components/MkMediaBanner.vue
index 1576144f6b..5ca4c50518 100644
--- a/packages/frontend/src/components/MkMediaBanner.vue
+++ b/packages/frontend/src/components/MkMediaBanner.vue
@@ -31,7 +31,7 @@
 import { onMounted } from 'vue';
 import * as misskey from 'misskey-js';
 import VuePlyr from 'vue-plyr';
-import { ColdDeviceStorage } from '@/store';
+import { soundConfigStore } from '@/scripts/sound';
 import 'vue-plyr/dist/vue-plyr.css';
 import { i18n } from '@/i18n';
 
@@ -44,11 +44,11 @@ const audioEl = $shallowRef<HTMLAudioElement | null>();
 let hide = $ref(true);
 
 function volumechange() {
-	if (audioEl) ColdDeviceStorage.set('mediaVolume', audioEl.volume);
+	if (audioEl) soundConfigStore.set('mediaVolume', audioEl.volume);
 }
 
 onMounted(() => {
-	if (audioEl) audioEl.volume = ColdDeviceStorage.get('mediaVolume');
+	if (audioEl) audioEl.volume = soundConfigStore.state.mediaVolume;
 });
 </script>
 
diff --git a/packages/frontend/src/pages/settings/sounds.vue b/packages/frontend/src/pages/settings/sounds.vue
index 8855a275c6..724fe43478 100644
--- a/packages/frontend/src/pages/settings/sounds.vue
+++ b/packages/frontend/src/pages/settings/sounds.vue
@@ -7,7 +7,7 @@
 	<FormSection>
 		<template #label>{{ i18n.ts.sounds }}</template>
 		<div class="_gaps_s">
-			<MkFolder v-for="type in Object.keys(sounds)" :key="type">
+			<MkFolder v-for="type in soundsKeys" :key="type">
 				<template #label>{{ i18n.t('_sfx.' + type) }}</template>
 				<template #suffix>{{ sounds[type].type ?? i18n.ts.none }}</template>
 
@@ -21,51 +21,44 @@
 </template>
 
 <script lang="ts" setup>
-import { computed, ref } from 'vue';
+import { Ref, computed, ref } from 'vue';
 import XSound from './sounds.sound.vue';
 import MkRange from '@/components/MkRange.vue';
 import MkButton from '@/components/MkButton.vue';
 import FormSection from '@/components/form/section.vue';
 import MkFolder from '@/components/MkFolder.vue';
-import { ColdDeviceStorage } from '@/store';
+import { soundConfigStore } from '@/scripts/sound';
 import { i18n } from '@/i18n';
 import { definePageMetadata } from '@/scripts/page-metadata';
 
-const masterVolume = computed({
-	get: () => {
-		return ColdDeviceStorage.get('sound_masterVolume');
-	},
-	set: (value) => {
-		ColdDeviceStorage.set('sound_masterVolume', value);
-	},
+const masterVolume = computed(soundConfigStore.makeGetterSetter('sound_masterVolume'));
+
+const soundsKeys = ['note', 'noteMy', 'notification', 'chat', 'chatBg', 'antenna', 'channel'] as const;
+
+const sounds = ref<Record<typeof soundsKeys[number], Ref<any>>>({
+	note: soundConfigStore.reactiveState.sound_note,
+	noteMy: soundConfigStore.reactiveState.sound_noteMy,
+	notification: soundConfigStore.reactiveState.sound_notification,
+	chat: soundConfigStore.reactiveState.sound_chat,
+	chatBg: soundConfigStore.reactiveState.sound_chatBg,
+	antenna: soundConfigStore.reactiveState.sound_antenna,
+	channel: soundConfigStore.reactiveState.sound_channel,
 });
 
-const volumeIcon = computed(() => masterVolume.value === 0 ? 'ti ti-volume-3' : 'ti ti-volume');
-
-const sounds = ref({
-	note: ColdDeviceStorage.get('sound_note'),
-	noteMy: ColdDeviceStorage.get('sound_noteMy'),
-	notification: ColdDeviceStorage.get('sound_notification'),
-	chat: ColdDeviceStorage.get('sound_chat'),
-	chatBg: ColdDeviceStorage.get('sound_chatBg'),
-	antenna: ColdDeviceStorage.get('sound_antenna'),
-	channel: ColdDeviceStorage.get('sound_channel'),
-});
-
-async function updated(type, sound) {
+async function updated(type: keyof typeof sounds.value, sound) {
 	const v = {
 		type: sound.type,
 		volume: sound.volume,
 	};
 
-	ColdDeviceStorage.set('sound_' + type, v);
+	soundConfigStore.set(`sound_${type}`, v);
 	sounds.value[type] = v;
 }
 
 function reset() {
-	for (const sound of Object.keys(sounds.value)) {
-		const v = ColdDeviceStorage.default['sound_' + sound];
-		ColdDeviceStorage.set('sound_' + sound, v);
+	for (const sound of Object.keys(sounds.value) as Array<keyof typeof sounds.value>) {
+		const v = soundConfigStore.def[`sound_${sound}`].default;
+		soundConfigStore.set(`sound_${sound}`, v);
 		sounds.value[sound] = v;
 	}
 }
diff --git a/packages/frontend/src/scripts/sound.ts b/packages/frontend/src/scripts/sound.ts
index 35fd007e64..7a5dd4dbfa 100644
--- a/packages/frontend/src/scripts/sound.ts
+++ b/packages/frontend/src/scripts/sound.ts
@@ -1,4 +1,56 @@
-import { ColdDeviceStorage } from '@/store';
+import { markRaw } from 'vue';
+import { Storage } from '@/pizzax';
+
+export const soundConfigStore = markRaw(new Storage('sound', {
+	mediaVolume: {
+		where: 'device',
+		default: 0.5
+	},
+	sound_masterVolume: {
+		where: 'device',
+		default: 0.3
+	},
+	sound_note: {
+		where: 'account',
+		default: { type: 'syuilo/n-aec', volume: 1 }
+	},
+	sound_noteMy: {
+		where: 'account',
+		default: { type: 'syuilo/n-cea-4va', volume: 1 }
+	},
+	sound_notification: {
+		where: 'account',
+		default: { type: 'syuilo/n-ea', volume: 1 }
+	},
+	sound_chat: {
+		where: 'account',
+		default: { type: 'syuilo/pope1', volume: 1 }
+	},
+	sound_chatBg: {
+		where: 'account',
+		default: { type: 'syuilo/waon', volume: 1 }
+	},
+	sound_antenna: {
+		where: 'account',
+		default: { type: 'syuilo/triple', volume: 1 }
+	},
+	sound_channel: {
+		where: 'account',
+		default: { type: 'syuilo/square-pico', volume: 1 }
+	},
+}));
+
+await soundConfigStore.ready;
+
+//#region サウンドのColdDeviceStorage => indexedDBのマイグレーション
+for (const target of Object.keys(soundConfigStore.state) as Array<keyof typeof soundConfigStore.state>) {
+	const value = localStorage.getItem(`miux:${target}`);
+	if (value) {
+		soundConfigStore.set(target, JSON.parse(value) as typeof soundConfigStore.def[typeof target]['default']);
+		localStorage.removeItem(`miux:${target}`);
+	}
+}
+//#endregion
 
 const cache = new Map<string, HTMLAudioElement>();
 
@@ -67,19 +119,20 @@ export function getAudio(file: string, useCache = true): HTMLAudioElement {
 }
 
 export function setVolume(audio: HTMLAudioElement, volume: number): HTMLAudioElement {
-	const masterVolume = ColdDeviceStorage.get('sound_masterVolume');
+	const masterVolume = soundConfigStore.state.sound_masterVolume;
 	audio.volume = masterVolume - ((1 - volume) * masterVolume);
 	return audio;
 }
 
 export function play(type: 'noteMy' | 'note' | 'antenna' | 'channel' | 'notification') {
-	const sound = ColdDeviceStorage.get(`sound_${type}`);
+	const sound = soundConfigStore.state[`sound_${type}`];
+	if (_DEV_) console.log('play', type, sound);
 	if (sound.type == null) return;
 	playFile(sound.type, sound.volume);
 }
 
 export function playFile(file: string, volume: number) {
-	const masterVolume = ColdDeviceStorage.get('sound_masterVolume');
+	const masterVolume = soundConfigStore.state.sound_masterVolume;
 	if (masterVolume === 0) return;
 
 	const audio = setVolume(getAudio(file), volume);
diff --git a/packages/frontend/src/store.ts b/packages/frontend/src/store.ts
index 0728fc84e5..a935093240 100644
--- a/packages/frontend/src/store.ts
+++ b/packages/frontend/src/store.ts
@@ -343,15 +343,6 @@ export class ColdDeviceStorage {
 		darkTheme,
 		syncDeviceDarkMode: true,
 		plugins: [] as Plugin[],
-		mediaVolume: 0.5,
-		sound_masterVolume: 0.5,
-		sound_note: { type: 'syuilo/n-eca', volume: 0.5 },
-		sound_noteMy: { type: 'syuilo/n-cea-4va', volume: 0.5 },
-		sound_notification: { type: 'syuilo/n-ea', volume: 0.5 },
-		sound_chat: { type: 'syuilo/pope1', volume: 0.5 },
-		sound_chatBg: { type: 'syuilo/waon', volume: 0.5 },
-		sound_antenna: { type: 'syuilo/triple', volume: 0.5 },
-		sound_channel: { type: 'syuilo/square-pico', volume: 0.5 },
 	};
 
 	public static watchers: Watcher[] = [];