diff --git a/packages/frontend/src/pages/room.vue b/packages/frontend/src/pages/room.vue
index b422c1bae4..b4c9532c33 100644
--- a/packages/frontend/src/pages/room.vue
+++ b/packages/frontend/src/pages/room.vue
@@ -222,6 +222,7 @@ const data = localStorage.getItem('roomData') != null ? JSON.parse(localStorage.
 			},
 		},
 	},
+	roomLightColor: [1.0, 0.9, 0.8],
 	installedObjects: [],
 };
 
@@ -570,6 +571,19 @@ function showOtherMenu(ev: PointerEvent) {
 	}, {
 		text: 'Import',
 		action: impor,
+	}, {
+		text: 'Delete',
+		danger: true,
+		action: () => {
+			os.confirm({
+				type: 'warning',
+				title: i18n.ts.areYouSure,
+			}).then(({ canceled }) => {
+				if (canceled) return;
+				localStorage.removeItem('roomData');
+				window.location.reload();
+			});
+		},
 	}, {
 		type: 'divider',
 	}, {
diff --git a/packages/frontend/src/world/room/object.ts b/packages/frontend/src/world/room/object.ts
index eabcaab7e0..41b2ac1919 100644
--- a/packages/frontend/src/world/room/object.ts
+++ b/packages/frontend/src/world/room/object.ts
@@ -107,7 +107,7 @@ export type ObjectDef<OpSc extends OptionsSchema = OptionsSchema> = {
 	placement: 'top' | 'side' | 'bottom' | 'wall' | 'ceiling' | 'floor';
 	hasCollisions?: boolean;
 	hasTexture?: boolean;
-	canPreMeshesMerging?: boolean;
+	canPreMeshesMerging?: boolean; // TODO: 除外するメッシュ名を指定できるようにする
 	//groupingMeshes: string[]; // multi-materialなメッシュは複数のメッシュに分割されるが、それだと不便な場合に追加の親メッシュでグルーピングするための指定
 	isChair?: boolean;
 	treatLoaderResult?: (loaderResult: BABYLON.AssetContainer) => void;