diff --git a/packages/frontend/assets/room/objects/letter-case/letter-case.blend b/packages/frontend/assets/room/objects/letter-case/letter-case.blend
new file mode 100644
index 0000000000..fbf224ff30
Binary files /dev/null and b/packages/frontend/assets/room/objects/letter-case/letter-case.blend differ
diff --git a/packages/frontend/assets/room/objects/letter-case/letter-case.glb b/packages/frontend/assets/room/objects/letter-case/letter-case.glb
new file mode 100644
index 0000000000..733844f7fc
Binary files /dev/null and b/packages/frontend/assets/room/objects/letter-case/letter-case.glb differ
diff --git a/packages/frontend/src/pages/room.vue b/packages/frontend/src/pages/room.vue
index f0e8556e3e..a5cfc1c39d 100644
--- a/packages/frontend/src/pages/room.vue
+++ b/packages/frontend/src/pages/room.vue
@@ -254,6 +254,13 @@ onMounted(() => {
 			rotation: [0, Math.PI / 2, 0],
 			sticky: 'j',
 			options: {},
+		}, {
+			id: 'j3',
+			type: 'letterCase',
+			position: [130, 59, 125],
+			rotation: [0, Math.PI / 2, 0],
+			sticky: 'j',
+			options: {},
 		}, {
 			id: 'j3',
 			type: 'powerStrip',
diff --git a/packages/frontend/src/utility/room/object-defs.ts b/packages/frontend/src/utility/room/object-defs.ts
index 4bb164ec26..d641bcea9b 100644
--- a/packages/frontend/src/utility/room/object-defs.ts
+++ b/packages/frontend/src/utility/room/object-defs.ts
@@ -20,6 +20,7 @@ import { energyDrink } from './objects/energyDrink.js';
 import { facialTissue } from './objects/facialTissue.js';
 import { keyboard } from './objects/keyboard.js';
 import { lavaLamp } from './objects/lavaLamp.js';
+import { letterCase } from './objects/letterCase.js';
 import { milk } from './objects/milk.js';
 import { monitor } from './objects/monitor.js';
 import { monstera } from './objects/monstera.js';
@@ -54,6 +55,7 @@ export const OBJECT_DEFS = [
 	facialTissue,
 	keyboard,
 	lavaLamp,
+	letterCase,
 	milk,
 	monitor,
 	monstera,
diff --git a/packages/frontend/src/utility/room/objects/letterCase.ts b/packages/frontend/src/utility/room/objects/letterCase.ts
new file mode 100644
index 0000000000..702848b7f4
--- /dev/null
+++ b/packages/frontend/src/utility/room/objects/letterCase.ts
@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { defineObject } from '../engine.js';
+
+export const letterCase = defineObject({
+	id: 'letterCase',
+	defaultOptions: {},
+	placement: 'top',
+	createInstance: () => {
+		return {
+			interactions: {},
+		};
+	},
+});