diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbd48b8b6c..52077f813f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 - Enhance: Bull DashboardでRelationship Queueの状態も確認できるように  
   (Cherry-picked from https://github.com/MisskeyIO/misskey/pull/751)
 - Enhance: ドライブでソートができるように
+- Enhance: アイコンデコレーション管理画面の改善
 - Enhance: 「単なるラッキー」の取得条件を変更
 - Enhance: 投稿フォームでEscキーを押したときIME入力中ならフォームを閉じないように（ #10866 ）  
 - Enhance: MiAuth, OAuthの認可画面の改善
diff --git a/locales/index.d.ts b/locales/index.d.ts
index 9058c70496..440f24ac84 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -5214,6 +5214,10 @@ export interface Locale extends ILocale {
      * アカウントを選択してください
      */
     "pleaseSelectAccount": string;
+    /**
+     * 利用可能なロール
+     */
+    "availableRoles": string;
     "_accountSettings": {
         /**
          * コンテンツの表示にログインを必須にする
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 1d426f1705..5d8e1a5e72 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1299,6 +1299,7 @@ yourNameContainsProhibitedWordsDescription: "名前に禁止されている文
 thisContentsAreMarkedAsSigninRequiredByAuthor: "投稿者により、表示にはログインが必要と設定されています"
 lockdown: "ロックダウン"
 pleaseSelectAccount: "アカウントを選択してください"
+availableRoles: "利用可能なロール"
 
 _accountSettings:
   requireSigninToViewContents: "コンテンツの表示にログインを必須にする"
diff --git a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts
index fd21309818..87d80cbe80 100644
--- a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts
+++ b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/create.ts
@@ -6,6 +6,7 @@
 import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { AvatarDecorationService } from '@/core/AvatarDecorationService.js';
+import { IdService } from '@/core/IdService.js';
 
 export const meta = {
 	tags: ['admin'],
@@ -13,6 +14,49 @@ export const meta = {
 	requireCredential: true,
 	requireRolePolicy: 'canManageAvatarDecorations',
 	kind: 'write:admin:avatar-decorations',
+
+	res: {
+		type: 'object',
+		optional: false, nullable: false,
+		properties: {
+			id: {
+				type: 'string',
+				optional: false, nullable: false,
+				format: 'id',
+			},
+			createdAt: {
+				type: 'string',
+				optional: false, nullable: false,
+				format: 'date-time',
+			},
+			updatedAt: {
+				type: 'string',
+				optional: false, nullable: true,
+				format: 'date-time',
+			},
+			name: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			description: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			url: {
+				type: 'string',
+				optional: false, nullable: false,
+			},
+			roleIdsThatCanBeUsedThisDecoration: {
+				type: 'array',
+				optional: false, nullable: false,
+				items: {
+					type: 'string',
+					optional: false, nullable: false,
+					format: 'id',
+				},
+			},
+		},
+	},
 } as const;
 
 export const paramDef = {
@@ -32,14 +76,25 @@ export const paramDef = {
 export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
 	constructor(
 		private avatarDecorationService: AvatarDecorationService,
+		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
-			await this.avatarDecorationService.create({
+			const created = await this.avatarDecorationService.create({
 				name: ps.name,
 				description: ps.description,
 				url: ps.url,
 				roleIdsThatCanBeUsedThisDecoration: ps.roleIdsThatCanBeUsedThisDecoration,
 			}, me);
+
+			return {
+				id: created.id,
+				createdAt: this.idService.parse(created.id).date.toISOString(),
+				updatedAt: null,
+				name: created.name,
+				description: created.description,
+				url: created.url,
+				roleIdsThatCanBeUsedThisDecoration: created.roleIdsThatCanBeUsedThisDecoration,
+			};
 		});
 	}
 }
diff --git a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts
index aee90023e1..d785f085ac 100644
--- a/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts
+++ b/packages/backend/src/server/api/endpoints/admin/avatar-decorations/list.ts
@@ -4,10 +4,7 @@
  */
 
 import { Inject, Injectable } from '@nestjs/common';
-import type { AnnouncementsRepository, AnnouncementReadsRepository } from '@/models/_.js';
-import type { MiAnnouncement } from '@/models/Announcement.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import { QueryService } from '@/core/QueryService.js';
 import { DI } from '@/di-symbols.js';
 import { IdService } from '@/core/IdService.js';
 import { AvatarDecorationService } from '@/core/AvatarDecorationService.js';
diff --git a/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue b/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
new file mode 100644
index 0000000000..a834f1c5fd
--- /dev/null
+++ b/packages/frontend/src/pages/avatar-decoration-edit-dialog.vue
@@ -0,0 +1,220 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<MkWindow
+	ref="windowEl"
+	:initialWidth="400"
+	:initialHeight="500"
+	:canResize="true"
+	@close="windowEl?.close()"
+	@closed="emit('closed')"
+>
+	<template v-if="avatarDecoration" #header>{{ avatarDecoration.name }}</template>
+	<template v-else #header>New decoration</template>
+
+	<div style="display: flex; flex-direction: column; min-height: 100%;">
+		<MkSpacer :marginMin="20" :marginMax="28" style="flex-grow: 1;">
+			<div class="_gaps_m">
+				<div :class="$style.preview">
+					<div :class="[$style.previewItem, $style.light]">
+						<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="url != '' ? [{ url }] : []" forceShowDecoration/>
+					</div>
+					<div :class="[$style.previewItem, $style.dark]">
+						<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="url != '' ? [{ url }] : []" forceShowDecoration/>
+					</div>
+				</div>
+				<MkInput v-model="name">
+					<template #label>{{ i18n.ts.name }}</template>
+				</MkInput>
+				<MkInput v-model="url">
+					<template #label>{{ i18n.ts.imageUrl }}</template>
+				</MkInput>
+				<MkTextarea v-model="description">
+					<template #label>{{ i18n.ts.description }}</template>
+				</MkTextarea>
+				<MkFolder>
+					<template #label>{{ i18n.ts.availableRoles }}</template>
+					<template #suffix>{{ rolesThatCanBeUsedThisDecoration.length === 0 ? i18n.ts.all : rolesThatCanBeUsedThisDecoration.length }}</template>
+
+					<div class="_gaps">
+						<MkButton rounded @click="addRole"><i class="ti ti-plus"></i> {{ i18n.ts.add }}</MkButton>
+
+						<div v-for="role in rolesThatCanBeUsedThisDecoration" :key="role.id" :class="$style.roleItem">
+							<MkRolePreview :class="$style.role" :role="role" :forModeration="true" :detailed="false" style="pointer-events: none;"/>
+							<button v-if="role.target === 'manual'" class="_button" :class="$style.roleUnassign" @click="removeRole(role, $event)"><i class="ti ti-x"></i></button>
+							<button v-else class="_button" :class="$style.roleUnassign" disabled><i class="ti ti-ban"></i></button>
+						</div>
+					</div>
+				</MkFolder>
+				<MkButton v-if="avatarDecoration" danger @click="del()"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
+			</div>
+		</MkSpacer>
+		<div :class="$style.footer">
+			<MkButton primary rounded style="margin: 0 auto;" @click="done"><i class="ti ti-check"></i> {{ props.avatarDecoration ? i18n.ts.update : i18n.ts.create }}</MkButton>
+		</div>
+	</div>
+</MkWindow>
+</template>
+
+<script lang="ts" setup>
+import { computed, watch, ref } from 'vue';
+import * as Misskey from 'misskey-js';
+import MkWindow from '@/components/MkWindow.vue';
+import MkButton from '@/components/MkButton.vue';
+import MkInput from '@/components/MkInput.vue';
+import MkInfo from '@/components/MkInfo.vue';
+import MkFolder from '@/components/MkFolder.vue';
+import * as os from '@/os.js';
+import { misskeyApi } from '@/scripts/misskey-api.js';
+import { i18n } from '@/i18n.js';
+import MkSwitch from '@/components/MkSwitch.vue';
+import MkRolePreview from '@/components/MkRolePreview.vue';
+import MkTextarea from '@/components/MkTextarea.vue';
+import { signinRequired } from '@/account.js';
+
+const $i = signinRequired();
+
+const props = defineProps<{
+	avatarDecoration?: any,
+}>();
+
+const emit = defineEmits<{
+	(ev: 'done', v: { deleted?: boolean; updated?: any; created?: any }): void,
+	(ev: 'closed'): void
+}>();
+
+const windowEl = ref<InstanceType<typeof MkWindow> | null>(null);
+const url = ref<string>(props.avatarDecoration ? props.avatarDecoration.url : '');
+const name = ref<string>(props.avatarDecoration ? props.avatarDecoration.name : '');
+const description = ref<string>(props.avatarDecoration ? props.avatarDecoration.description : '');
+const roleIdsThatCanBeUsedThisDecoration = ref(props.avatarDecoration ? props.avatarDecoration.roleIdsThatCanBeUsedThisDecoration : []);
+const rolesThatCanBeUsedThisDecoration = ref<Misskey.entities.Role[]>([]);
+
+watch(roleIdsThatCanBeUsedThisDecoration, async () => {
+	rolesThatCanBeUsedThisDecoration.value = (await Promise.all(roleIdsThatCanBeUsedThisDecoration.value.map((id) => misskeyApi('admin/roles/show', { roleId: id }).catch(() => null)))).filter(x => x != null);
+}, { immediate: true });
+
+async function addRole() {
+	const roles = await misskeyApi('admin/roles/list');
+	const currentRoleIds = rolesThatCanBeUsedThisDecoration.value.map(x => x.id);
+
+	const { canceled, result: role } = await os.select({
+		items: roles.filter(r => r.isPublic).filter(r => !currentRoleIds.includes(r.id)).map(r => ({ text: r.name, value: r })),
+	});
+	if (canceled || role == null) return;
+
+	rolesThatCanBeUsedThisDecoration.value.push(role);
+}
+
+async function removeRole(role, ev) {
+	rolesThatCanBeUsedThisDecoration.value = rolesThatCanBeUsedThisDecoration.value.filter(x => x.id !== role.id);
+}
+
+async function done() {
+	const params = {
+		url: url.value,
+		name: name.value,
+		description: description.value,
+		roleIdsThatCanBeUsedThisDecoration: rolesThatCanBeUsedThisDecoration.value.map(x => x.id),
+	};
+
+	if (props.avatarDecoration) {
+		await os.apiWithDialog('admin/avatar-decorations/update', {
+			id: props.avatarDecoration.id,
+			...params,
+		});
+
+		emit('done', {
+			updated: {
+				id: props.avatarDecoration.id,
+				...params,
+			},
+		});
+
+		windowEl.value?.close();
+	} else {
+		const created = await os.apiWithDialog('admin/avatar-decorations/create', params);
+
+		emit('done', {
+			created: created,
+		});
+
+		windowEl.value?.close();
+	}
+}
+
+async function del() {
+	const { canceled } = await os.confirm({
+		type: 'warning',
+		text: i18n.tsx.removeAreYouSure({ x: name.value }),
+	});
+	if (canceled) return;
+
+	misskeyApi('admin/avatar-decorations/delete', {
+		id: props.avatarDecoration.id,
+	}).then(() => {
+		emit('done', {
+			deleted: true,
+		});
+		windowEl.value?.close();
+	});
+}
+</script>
+
+<style lang="scss" module>
+.preview {
+	display: grid;
+	place-items: center;
+	grid-template-columns: 1fr 1fr;
+	grid-template-rows: 1fr;
+	gap: var(--MI-margin);
+}
+
+.previewItem {
+	width: 100%;
+	height: 100%;
+	min-height: 160px;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	border-radius: var(--MI-radius);
+
+	&.light {
+		background: #eee;
+	}
+
+	&.dark {
+		background: #222;
+	}
+}
+
+.roleItem {
+	display: flex;
+}
+
+.role {
+	flex: 1;
+}
+
+.roleUnassign {
+	width: 32px;
+	height: 32px;
+	margin-left: 8px;
+	align-self: center;
+}
+
+.footer {
+	position: sticky;
+	z-index: 10000;
+	bottom: 0;
+	left: 0;
+	padding: 12px;
+	border-top: solid 0.5px var(--MI_THEME-divider);
+	background: var(--MI_THEME-acrylicBg);
+	-webkit-backdrop-filter: var(--MI-blur, blur(15px));
+	backdrop-filter: var(--MI-blur, blur(15px));
+}
+</style>
diff --git a/packages/frontend/src/pages/avatar-decorations.vue b/packages/frontend/src/pages/avatar-decorations.vue
index b97e7c0eea..a5cafb1678 100644
--- a/packages/frontend/src/pages/avatar-decorations.vue
+++ b/packages/frontend/src/pages/avatar-decorations.vue
@@ -5,92 +5,38 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <MkStickyContainer>
-	<template #header><MkPageHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs"/></template>
+	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
 	<MkSpacer :contentMax="900">
 		<div class="_gaps">
-			<MkFolder v-for="avatarDecoration in avatarDecorations" :key="avatarDecoration.id ?? avatarDecoration._id" :defaultOpen="avatarDecoration.id == null">
-				<template #label>{{ avatarDecoration.name }}</template>
-				<template #caption>{{ avatarDecoration.description }}</template>
-
-				<div :class="$style.editorRoot">
-					<div :class="$style.editorWrapper">
-						<div :class="$style.preview">
-							<div :class="[$style.previewItem, $style.light]">
-								<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="[avatarDecoration]" forceShowDecoration/>
-							</div>
-							<div :class="[$style.previewItem, $style.dark]">
-								<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="[avatarDecoration]" forceShowDecoration/>
-							</div>
-						</div>
-						<div class="_gaps_m">
-							<MkInput v-model="avatarDecoration.name">
-								<template #label>{{ i18n.ts.name }}</template>
-							</MkInput>
-							<MkTextarea v-model="avatarDecoration.description">
-								<template #label>{{ i18n.ts.description }}</template>
-							</MkTextarea>
-							<MkInput v-model="avatarDecoration.url">
-								<template #label>{{ i18n.ts.imageUrl }}</template>
-							</MkInput>
-							<div class="_buttons">
-								<MkButton inline primary @click="save(avatarDecoration)"><i class="ti ti-device-floppy"></i> {{ i18n.ts.save }}</MkButton>
-								<MkButton v-if="avatarDecoration.id != null" inline danger @click="del(avatarDecoration)"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
-							</div>
-						</div>
-					</div>
+			<div :class="$style.decorations">
+				<div
+					v-for="avatarDecoration in avatarDecorations"
+					:key="avatarDecoration.id"
+					v-panel
+					:class="$style.decoration"
+					@click="edit(avatarDecoration)"
+				>
+					<div :class="$style.decorationName"><MkCondensedLine :minScale="0.5">{{ avatarDecoration.name }}</MkCondensedLine></div>
+					<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="[{ url: avatarDecoration.url }]" forceShowDecoration/>
 				</div>
-			</MkFolder>
+			</div>
 		</div>
 	</MkSpacer>
 </MkStickyContainer>
 </template>
 
 <script lang="ts" setup>
-import { ref, computed } from 'vue';
+import { ref, computed, defineAsyncComponent } from 'vue';
 import * as Misskey from 'misskey-js';
-import MkButton from '@/components/MkButton.vue';
-import MkInput from '@/components/MkInput.vue';
-import MkTextarea from '@/components/MkTextarea.vue';
 import { signinRequired } from '@/account.js';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
-import MkFolder from '@/components/MkFolder.vue';
-
-const avatarDecorations = ref<Misskey.entities.AdminAvatarDecorationsListResponse>([]);
 
 const $i = signinRequired();
 
-function add() {
-	avatarDecorations.value.unshift({
-		_id: Math.random().toString(36),
-		id: null,
-		name: '',
-		description: '',
-		url: '',
-	});
-}
-
-function del(avatarDecoration) {
-	os.confirm({
-		type: 'warning',
-		text: i18n.tsx.deleteAreYouSure({ x: avatarDecoration.name }),
-	}).then(({ canceled }) => {
-		if (canceled) return;
-		avatarDecorations.value = avatarDecorations.value.filter(x => x !== avatarDecoration);
-		misskeyApi('admin/avatar-decorations/delete', avatarDecoration);
-	});
-}
-
-async function save(avatarDecoration) {
-	if (avatarDecoration.id == null) {
-		await os.apiWithDialog('admin/avatar-decorations/create', avatarDecoration);
-		load();
-	} else {
-		os.apiWithDialog('admin/avatar-decorations/update', avatarDecoration);
-	}
-}
+const avatarDecorations = ref<Misskey.entities.AdminAvatarDecorationsListResponse>([]);
 
 function load() {
 	misskeyApi('admin/avatar-decorations/list').then(_avatarDecorations => {
@@ -100,6 +46,37 @@ function load() {
 
 load();
 
+async function add(ev: MouseEvent) {
+	const { dispose } = os.popup(defineAsyncComponent(() => import('./avatar-decoration-edit-dialog.vue')), {
+	}, {
+		done: result => {
+			if (result.created) {
+				avatarDecorations.value.unshift(result.created);
+			}
+		},
+		closed: () => dispose(),
+	});
+}
+
+function edit(avatarDecoration) {
+	const { dispose } = os.popup(defineAsyncComponent(() => import('./avatar-decoration-edit-dialog.vue')), {
+		avatarDecoration: avatarDecoration,
+	}, {
+		done: result => {
+			if (result.updated) {
+				const index = avatarDecorations.value.findIndex(x => x.id === avatarDecoration.id);
+				avatarDecorations.value[index] = {
+					...avatarDecorations.value[index],
+					...result.updated,
+				};
+			} else if (result.deleted) {
+				avatarDecorations.value = avatarDecorations.value.filter(x => x.id !== avatarDecoration.id);
+			}
+		},
+		closed: () => dispose(),
+	});
+}
+
 const headerActions = computed(() => [{
 	asFullButton: true,
 	icon: 'ti ti-plus',
@@ -116,53 +93,26 @@ definePageMetadata(() => ({
 </script>
 
 <style lang="scss" module>
-.editorRoot {
-	container: editor / inline-size;
-}
-
-.editorWrapper {
+.decorations {
 	display: grid;
-	grid-template-columns: 1fr;
-	grid-template-rows: auto auto;
-	gap: var(--MI-margin);
+	grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
+	grid-gap: 12px;
 }
 
-.preview {
-	display: grid;
-	place-items: center;
-	grid-template-columns: 1fr 1fr;
-	grid-template-rows: 1fr;
-	gap: var(--MI-margin);
+.decoration {
+	cursor: pointer;
+	padding: 16px 16px 28px 16px;
+	border-radius: 8px;
+	text-align: center;
+	font-size: 90%;
+	overflow: clip;
+	contain: content;
 }
 
-.previewItem {
-	width: 100%;
-	height: 100%;
-	min-height: 160px;
-	display: flex;
-	align-items: center;
-	justify-content: center;
-	border-radius: var(--MI-radius);
-
-	&.light {
-		background: #eee;
-	}
-
-	&.dark {
-		background: #222;
-	}
-}
-
-@container editor (min-width: 600px) {
-	.editorWrapper {
-		grid-template-columns: 200px 1fr;
-		grid-template-rows: 1fr;
-		gap: calc(var(--MI-margin) * 2);
-	}
-
-	.preview {
-		grid-template-columns: 1fr;
-		grid-template-rows: 1fr 1fr;
-	}
+.decorationName {
+	position: relative;
+	z-index: 10;
+	font-weight: bold;
+	margin-bottom: 20px;
 }
 </style>
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue b/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue
index f72a0b9383..3c9914b4e2 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.decoration.vue
@@ -10,12 +10,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<div :class="$style.name"><MkCondensedLine :minScale="0.5">{{ decoration.name }}</MkCondensedLine></div>
 	<MkAvatar style="width: 60px; height: 60px;" :user="$i" :decorations="[{ url: decoration.url, angle, flipH, offsetX, offsetY }]" forceShowDecoration/>
-	<i v-if="decoration.roleIdsThatCanBeUsedThisDecoration.length > 0 && !$i.roles.some(r => decoration.roleIdsThatCanBeUsedThisDecoration.includes(r.id))" :class="$style.lock" class="ti ti-lock"></i>
+	<i v-if="locked" :class="$style.lock" class="ti ti-lock"></i>
 </div>
 </template>
 
 <script lang="ts" setup>
-import { } from 'vue';
+import { computed } from 'vue';
 import { signinRequired } from '@/account.js';
 
 const $i = signinRequired();
@@ -37,6 +37,8 @@ const props = defineProps<{
 const emit = defineEmits<{
 	(ev: 'click'): void;
 }>();
+
+const locked = computed(() => props.decoration.roleIdsThatCanBeUsedThisDecoration.length > 0 && !$i.roles.some(r => props.decoration.roleIdsThatCanBeUsedThisDecoration.includes(r.id)));
 </script>
 
 <style lang="scss" module>
@@ -67,5 +69,6 @@ const emit = defineEmits<{
 	position: absolute;
 	bottom: 12px;
 	right: 12px;
+	color: var(--MI_THEME-warn);
 }
 </style>
diff --git a/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue b/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
index 853e536ea3..aa899ac649 100644
--- a/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
+++ b/packages/frontend/src/pages/settings/avatar-decoration.dialog.vue
@@ -38,7 +38,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<div :class="$style.footer" class="_buttonsCenter">
 			<MkButton v-if="usingIndex != null" primary rounded @click="update"><i class="ti ti-check"></i> {{ i18n.ts.update }}</MkButton>
 			<MkButton v-if="usingIndex != null" rounded @click="detach"><i class="ti ti-x"></i> {{ i18n.ts.detach }}</MkButton>
-			<MkButton v-else :disabled="exceeded" primary rounded @click="attach"><i class="ti ti-check"></i> {{ i18n.ts.attach }}</MkButton>
+			<MkButton v-else :disabled="exceeded || locked" primary rounded @click="attach"><i class="ti ti-check"></i> {{ i18n.ts.attach }}</MkButton>
 		</div>
 	</div>
 </MkModalWindow>
@@ -61,6 +61,7 @@ const props = defineProps<{
 		id: string;
 		url: string;
 		name: string;
+		roleIdsThatCanBeUsedThisDecoration: string[];
 	};
 }>();
 
@@ -83,6 +84,7 @@ const emit = defineEmits<{
 
 const dialog = shallowRef<InstanceType<typeof MkModalWindow>>();
 const exceeded = computed(() => ($i.policies.avatarDecorationLimit - $i.avatarDecorations.length) <= 0);
+const locked = computed(() => props.decoration.roleIdsThatCanBeUsedThisDecoration.length > 0 && !$i.roles.some(r => props.decoration.roleIdsThatCanBeUsedThisDecoration.includes(r.id)));
 const angle = ref((props.usingIndex != null ? $i.avatarDecorations[props.usingIndex].angle : null) ?? 0);
 const flipH = ref((props.usingIndex != null ? $i.avatarDecorations[props.usingIndex].flipH : null) ?? false);
 const offsetX = ref((props.usingIndex != null ? $i.avatarDecorations[props.usingIndex].offsetX : null) ?? 0);
diff --git a/packages/misskey-js/etc/misskey-js.api.md b/packages/misskey-js/etc/misskey-js.api.md
index 61de8b8c7e..061b533b72 100644
--- a/packages/misskey-js/etc/misskey-js.api.md
+++ b/packages/misskey-js/etc/misskey-js.api.md
@@ -121,6 +121,9 @@ type AdminAnnouncementsUpdateRequest = operations['admin___announcements___updat
 // @public (undocumented)
 type AdminAvatarDecorationsCreateRequest = operations['admin___avatar-decorations___create']['requestBody']['content']['application/json'];
 
+// @public (undocumented)
+type AdminAvatarDecorationsCreateResponse = operations['admin___avatar-decorations___create']['responses']['200']['content']['application/json'];
+
 // @public (undocumented)
 type AdminAvatarDecorationsDeleteRequest = operations['admin___avatar-decorations___delete']['requestBody']['content']['application/json'];
 
@@ -1253,6 +1256,7 @@ declare namespace entities {
         AdminAnnouncementsListResponse,
         AdminAnnouncementsUpdateRequest,
         AdminAvatarDecorationsCreateRequest,
+        AdminAvatarDecorationsCreateResponse,
         AdminAvatarDecorationsDeleteRequest,
         AdminAvatarDecorationsListRequest,
         AdminAvatarDecorationsListResponse,
diff --git a/packages/misskey-js/src/autogen/endpoint.ts b/packages/misskey-js/src/autogen/endpoint.ts
index d0367d8496..5e6bc0a99c 100644
--- a/packages/misskey-js/src/autogen/endpoint.ts
+++ b/packages/misskey-js/src/autogen/endpoint.ts
@@ -31,6 +31,7 @@ import type {
 	AdminAnnouncementsListResponse,
 	AdminAnnouncementsUpdateRequest,
 	AdminAvatarDecorationsCreateRequest,
+	AdminAvatarDecorationsCreateResponse,
 	AdminAvatarDecorationsDeleteRequest,
 	AdminAvatarDecorationsListRequest,
 	AdminAvatarDecorationsListResponse,
@@ -597,7 +598,7 @@ export type Endpoints = {
 	'admin/announcements/delete': { req: AdminAnnouncementsDeleteRequest; res: EmptyResponse };
 	'admin/announcements/list': { req: AdminAnnouncementsListRequest; res: AdminAnnouncementsListResponse };
 	'admin/announcements/update': { req: AdminAnnouncementsUpdateRequest; res: EmptyResponse };
-	'admin/avatar-decorations/create': { req: AdminAvatarDecorationsCreateRequest; res: EmptyResponse };
+	'admin/avatar-decorations/create': { req: AdminAvatarDecorationsCreateRequest; res: AdminAvatarDecorationsCreateResponse };
 	'admin/avatar-decorations/delete': { req: AdminAvatarDecorationsDeleteRequest; res: EmptyResponse };
 	'admin/avatar-decorations/list': { req: AdminAvatarDecorationsListRequest; res: AdminAvatarDecorationsListResponse };
 	'admin/avatar-decorations/update': { req: AdminAvatarDecorationsUpdateRequest; res: EmptyResponse };
diff --git a/packages/misskey-js/src/autogen/entities.ts b/packages/misskey-js/src/autogen/entities.ts
index ced87c4c7e..f3ddf64481 100644
--- a/packages/misskey-js/src/autogen/entities.ts
+++ b/packages/misskey-js/src/autogen/entities.ts
@@ -34,6 +34,7 @@ export type AdminAnnouncementsListRequest = operations['admin___announcements___
 export type AdminAnnouncementsListResponse = operations['admin___announcements___list']['responses']['200']['content']['application/json'];
 export type AdminAnnouncementsUpdateRequest = operations['admin___announcements___update']['requestBody']['content']['application/json'];
 export type AdminAvatarDecorationsCreateRequest = operations['admin___avatar-decorations___create']['requestBody']['content']['application/json'];
+export type AdminAvatarDecorationsCreateResponse = operations['admin___avatar-decorations___create']['responses']['200']['content']['application/json'];
 export type AdminAvatarDecorationsDeleteRequest = operations['admin___avatar-decorations___delete']['requestBody']['content']['application/json'];
 export type AdminAvatarDecorationsListRequest = operations['admin___avatar-decorations___list']['requestBody']['content']['application/json'];
 export type AdminAvatarDecorationsListResponse = operations['admin___avatar-decorations___list']['responses']['200']['content']['application/json'];
diff --git a/packages/misskey-js/src/autogen/types.ts b/packages/misskey-js/src/autogen/types.ts
index 560960f018..a5333d4f93 100644
--- a/packages/misskey-js/src/autogen/types.ts
+++ b/packages/misskey-js/src/autogen/types.ts
@@ -6324,9 +6324,22 @@ export type operations = {
       };
     };
     responses: {
-      /** @description OK (without any results) */
-      204: {
-        content: never;
+      /** @description OK (with results) */
+      200: {
+        content: {
+          'application/json': {
+            /** Format: id */
+            id: string;
+            /** Format: date-time */
+            createdAt: string;
+            /** Format: date-time */
+            updatedAt: string | null;
+            name: string;
+            description: string;
+            url: string;
+            roleIdsThatCanBeUsedThisDecoration: string[];
+          };
+        };
       };
       /** @description Client error */
       400: {