diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 477927af2c..87b5921cc4 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -3604,6 +3604,9 @@ _miWorld:
       bodyMat: "コップの素材"
       liquidMat: "液体の素材"
     mikan: "みかん"
+    bolt: "ボルト"
+    _bolt:
+      mat: "素材"
 
 _miRoom:
   snapToGrid: "グリッドにスナップ"
diff --git a/packages/frontend-misskey-world-engine/src/avatars/accessories/bolt.ts b/packages/frontend-misskey-world-engine/src/avatars/accessories/bolt.ts
new file mode 100644
index 0000000000..afe2144064
--- /dev/null
+++ b/packages/frontend-misskey-world-engine/src/avatars/accessories/bolt.ts
@@ -0,0 +1,32 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as BABYLON from '@babylonjs/core/pure.js';
+import { bolt_schema } from 'misskey-world/src/avatars/accessories/bolt.schema.js';
+import { defineAccessory } from '../accessory.js';
+
+export const bolt = defineAccessory(bolt_schema, {
+	createInstance: ({ model, options }) => {
+		const material = model.findMaterial('__X_BOLT__');
+
+		const applyMat = () => {
+			material.albedoColor = new BABYLON.Color3(options.mat.color[0], options.mat.color[1], options.mat.color[2]);
+			material.roughness = options.mat.roughness;
+			material.metallic = options.mat.metallic;
+		};
+
+		applyMat();
+
+		return {
+			onOptionsUpdated: ([k, v]) => {
+				switch (k) {
+					case 'mat': applyMat(); break;
+				}
+			},
+			dispose: () => {
+			},
+		};
+	},
+});
diff --git a/packages/frontend-misskey-world-engine/src/avatars/accessory-defs.ts b/packages/frontend-misskey-world-engine/src/avatars/accessory-defs.ts
index 7eb70a1d3c..e5f08c2112 100644
--- a/packages/frontend-misskey-world-engine/src/avatars/accessory-defs.ts
+++ b/packages/frontend-misskey-world-engine/src/avatars/accessory-defs.ts
@@ -5,11 +5,13 @@
 
 import { mug } from './accessories/mug.js';
 import { mikan } from './accessories/mikan.js';
+import { bolt } from './accessories/bolt.js';
 import type { AvatarAccessoryDef } from './accessory.js';
 
 export const AVATAR_ACCESSORY_DEFS = [
 	mug,
 	mikan,
+	bolt,
 ] as AvatarAccessoryDef[];
 
 export function getAccessoryDef(type: string): AvatarAccessoryDef {
diff --git a/packages/frontend/assets/world/objects/bolt/bolt.blend b/packages/frontend/assets/world/objects/bolt/bolt.blend
new file mode 100644
index 0000000000..5acc3a3eae
Binary files /dev/null and b/packages/frontend/assets/world/objects/bolt/bolt.blend differ
diff --git a/packages/frontend/assets/world/objects/bolt/bolt.glb b/packages/frontend/assets/world/objects/bolt/bolt.glb
new file mode 100644
index 0000000000..f8bd96366b
Binary files /dev/null and b/packages/frontend/assets/world/objects/bolt/bolt.glb differ
diff --git a/packages/frontend/src/world/avatars/accessories/bolt.ui.ts b/packages/frontend/src/world/avatars/accessories/bolt.ui.ts
new file mode 100644
index 0000000000..06529f815a
--- /dev/null
+++ b/packages/frontend/src/world/avatars/accessories/bolt.ui.ts
@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { defineAccessoryUi } from '../defineAccessoryUi.js';
+import type { bolt_schema } from 'misskey-world/src/avatars/accessories/bolt.schema.js';
+import { i18n } from '@/i18n.js';
+
+export const bolt_ui = defineAccessoryUi<typeof bolt_schema>({
+	name: i18n.ts._miWorld._avatarAccessories.bolt,
+	options: {
+		mat: {
+			label: i18n.ts._miWorld._avatarAccessories._bolt.mat,
+		},
+	},
+});
diff --git a/packages/frontend/src/world/avatars/accessory-ui-defs.ts b/packages/frontend/src/world/avatars/accessory-ui-defs.ts
index 587f415789..2e8a90d4a6 100644
--- a/packages/frontend/src/world/avatars/accessory-ui-defs.ts
+++ b/packages/frontend/src/world/avatars/accessory-ui-defs.ts
@@ -5,11 +5,13 @@
 
 import { mug_ui } from './accessories/mug.ui.js';
 import { mikan_ui } from './accessories/mikan.ui.js';
+import { bolt_ui } from './accessories/bolt.ui.js';
 import type { AccessoryUiDef } from './defineAccessoryUi.js';
 
 export const AVATAR_ACCESSORY_UI_DEFS = {
 	mug: mug_ui,
 	mikan: mikan_ui,
+	bolt: bolt_ui,
 } as Record<string, AccessoryUiDef>;
 
 export function getAccessoryUiDef(type: string): AccessoryUiDef {
diff --git a/packages/i18n/src/autogen/locale.ts b/packages/i18n/src/autogen/locale.ts
index a5f4eeff12..e60e9088ab 100644
--- a/packages/i18n/src/autogen/locale.ts
+++ b/packages/i18n/src/autogen/locale.ts
@@ -13438,6 +13438,16 @@ export interface Locale extends ILocale {
              * みかん
              */
             "mikan": string;
+            /**
+             * ボルト
+             */
+            "bolt": string;
+            "_bolt": {
+                /**
+                 * 素材
+                 */
+                "mat": string;
+            };
         };
     };
     "_miRoom": {
diff --git a/packages/misskey-world/src/avatars/accessories/bolt.schema.ts b/packages/misskey-world/src/avatars/accessories/bolt.schema.ts
new file mode 100644
index 0000000000..2d61abefd1
--- /dev/null
+++ b/packages/misskey-world/src/avatars/accessories/bolt.schema.ts
@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { defineAccessorySchema } from '../accessory.js';
+export const bolt_schema = defineAccessorySchema({
+	id: 'bolt',
+	options: {
+		schema: {
+			mat: {
+				type: 'material',
+			},
+		},
+		default: {
+			mat: { color: [0.8, 0.8, 0.8], roughness: 0.3, metallic: 1 },
+		},
+	},
+});
diff --git a/packages/misskey-world/src/avatars/accessory-schema-defs.ts b/packages/misskey-world/src/avatars/accessory-schema-defs.ts
index d3bc034043..643d85270e 100644
--- a/packages/misskey-world/src/avatars/accessory-schema-defs.ts
+++ b/packages/misskey-world/src/avatars/accessory-schema-defs.ts
@@ -5,11 +5,13 @@
 
 import { mug_schema } from './accessories/mug.schema.js';
 import { mikan_schema } from './accessories/mikan.schema.js';
+import { bolt_schema } from './accessories/bolt.schema.js';
 import type { AccessorySchemaDef } from './accessory.js';
 
 export const ACCESSORY_SCHEMA_DEFS = {
 	mug: mug_schema,
 	mikan: mikan_schema,
+	bolt: bolt_schema,
 } as Record<string, AccessorySchemaDef<any>>;
 
 export function getAccessorySchemaDef(type: string): AccessorySchemaDef {