diff --git a/packages/frontend/assets/room/objects/monitor/monitor.blend b/packages/frontend/assets/room/objects/monitor/monitor.blend
index 5b07daaf8e..838d650bde 100644
Binary files a/packages/frontend/assets/room/objects/monitor/monitor.blend and b/packages/frontend/assets/room/objects/monitor/monitor.blend differ
diff --git a/packages/frontend/assets/room/objects/monitor/monitor.glb b/packages/frontend/assets/room/objects/monitor/monitor.glb
index 769e586fcc..ab4d51bd24 100644
Binary files a/packages/frontend/assets/room/objects/monitor/monitor.glb and b/packages/frontend/assets/room/objects/monitor/monitor.glb differ
diff --git a/packages/frontend/src/world/room/objects/allInOnePc.ts b/packages/frontend/src/world/room/objects/allInOnePc.ts
index 71357190d7..e21988bdac 100644
--- a/packages/frontend/src/world/room/objects/allInOnePc.ts
+++ b/packages/frontend/src/world/room/objects/allInOnePc.ts
@@ -41,7 +41,7 @@ export const allInOnePc = defineObject({
 		default: {
 			bodyColor: [1, 1, 1],
 			bezelColor: [0, 0, 0],
-			screenBrightness: 0.35,
+			screenBrightness: 0.5,
 			customPicture: null,
 			fit: 'cover',
 		},
@@ -88,7 +88,7 @@ export const allInOnePc = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
+			screenMaterial.emissiveIntensity = b * 2;
 			light.intensity = (5 * b) * WORLD_SCALE * WORLD_SCALE;
 		};
 
@@ -98,6 +98,7 @@ export const allInOnePc = defineObject({
 			if (options.customPicture != null) {
 				screenMaterial.unfreeze();
 				const tex = new BABYLON.Texture(options.customPicture, scene, false, false, undefined, () => {
+					screenMaterial.emissiveColor = new BABYLON.Color3(1, 1, 1);
 					screenMaterial.emissiveTexture = tex;
 					applyFit();
 					applyScreenBrightness();
diff --git a/packages/frontend/src/world/room/objects/djPlayer.ts b/packages/frontend/src/world/room/objects/djPlayer.ts
index d5b9f0c42d..09994b183c 100644
--- a/packages/frontend/src/world/room/objects/djPlayer.ts
+++ b/packages/frontend/src/world/room/objects/djPlayer.ts
@@ -30,7 +30,7 @@ export const djPlayer = defineObject({
 			},
 		},
 		default: {
-			screenBrightness: 0.35,
+			screenBrightness: 0.5,
 			customPicture: null,
 			fit: 'cover',
 		},
@@ -62,7 +62,7 @@ export const djPlayer = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
+			screenMaterial.emissiveIntensity = b * 2;
 		};
 
 		applyScreenBrightness();
@@ -71,6 +71,7 @@ export const djPlayer = defineObject({
 			if (options.customPicture != null && options.customPicture !== '') {
 				screenMaterial.unfreeze();
 				const tex = new BABYLON.Texture(options.customPicture, scene, false, false, undefined, () => {
+					screenMaterial.emissiveColor = new BABYLON.Color3(1, 1, 1);
 					screenMaterial.emissiveTexture = tex;
 					applyFit();
 					applyScreenBrightness();
@@ -83,6 +84,7 @@ export const djPlayer = defineObject({
 				});
 				tex.level = 0.5;
 			} else {
+				screenMaterial.emissiveColor = new BABYLON.Color3(1, 1, 1);
 				screenMaterial.emissiveTexture = defaultScreenTexture;
 				applyFit();
 				resolve();
diff --git a/packages/frontend/src/world/room/objects/handheldGameConsole.ts b/packages/frontend/src/world/room/objects/handheldGameConsole.ts
index bbaed98935..3e5cb3d663 100644
--- a/packages/frontend/src/world/room/objects/handheldGameConsole.ts
+++ b/packages/frontend/src/world/room/objects/handheldGameConsole.ts
@@ -36,7 +36,7 @@ export const handheldGameConsole = defineObject({
 		},
 		default: {
 			bodyColor: [1, 1, 1],
-			screenBrightness: 0.35,
+			screenBrightness: 0.5,
 			customPicture: null,
 			fit: 'cover',
 		},
@@ -71,7 +71,7 @@ export const handheldGameConsole = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
+			screenMaterial.emissiveIntensity = b * 2;
 		};
 
 		applyScreenBrightness();
@@ -80,6 +80,7 @@ export const handheldGameConsole = defineObject({
 			if (options.customPicture != null) {
 				screenMaterial.unfreeze();
 				const tex = new BABYLON.Texture(options.customPicture, scene, false, false, undefined, () => {
+					screenMaterial.emissiveColor = new BABYLON.Color3(1, 1, 1);
 					screenMaterial.emissiveTexture = tex;
 					applyFit();
 					applyScreenBrightness();
diff --git a/packages/frontend/src/world/room/objects/laptopPc.ts b/packages/frontend/src/world/room/objects/laptopPc.ts
index 851425fc4a..1a4bbfc29d 100644
--- a/packages/frontend/src/world/room/objects/laptopPc.ts
+++ b/packages/frontend/src/world/room/objects/laptopPc.ts
@@ -48,7 +48,7 @@ export const laptopPc = defineObject({
 		default: {
 			bodyColor: [1, 1, 1],
 			bezelColor: [0, 0, 0],
-			screenBrightness: 0.35,
+			screenBrightness: 0.5,
 			customPicture: null,
 			fit: 'cover',
 			openAngle: 0,
@@ -98,7 +98,7 @@ export const laptopPc = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
+			screenMaterial.emissiveIntensity = b * 2;
 			light.intensity = (2 * b) * WORLD_SCALE * WORLD_SCALE;
 		};
 
@@ -108,6 +108,7 @@ export const laptopPc = defineObject({
 			if (options.customPicture != null) {
 				screenMaterial.unfreeze();
 				const tex = new BABYLON.Texture(options.customPicture, scene, false, false, undefined, () => {
+					screenMaterial.emissiveColor = new BABYLON.Color3(1, 1, 1);
 					screenMaterial.emissiveTexture = tex;
 					applyFit();
 					applyScreenBrightness();
diff --git a/packages/frontend/src/world/room/objects/monitor.ts b/packages/frontend/src/world/room/objects/monitor.ts
index 82567be1ca..7be89b48d4 100644
--- a/packages/frontend/src/world/room/objects/monitor.ts
+++ b/packages/frontend/src/world/room/objects/monitor.ts
@@ -36,7 +36,7 @@ export const monitor = defineObject({
 		},
 		default: {
 			bodyColor: [0.1, 0.1, 0.1],
-			screenBrightness: 0.35,
+			screenBrightness: 0.5,
 			customPicture: null,
 			fit: 'cover',
 		},
@@ -48,6 +48,7 @@ export const monitor = defineObject({
 		const scale = new BABYLON.Vector3();
 		matrix.decompose(scale);
 
+		// TODO: graphicsQualityがLOWならそもそも追加しない
 		const light = new BABYLON.SpotLight('', new BABYLON.Vector3(cm(0), cm(20) / Math.abs(scale.y), 0), new BABYLON.Vector3(0, 0, 1), Math.PI / 1, 2, scene, room?.lightContainer != null);
 		light.parent = model.root;
 		light.diffuse = new BABYLON.Color3(1.0, 1.0, 1.0);
@@ -82,8 +83,8 @@ export const monitor = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
-			light.intensity = (5 * b) * WORLD_SCALE * WORLD_SCALE;
+			screenMaterial.emissiveIntensity = b * 2;
+			light.intensity = (1 * b) * WORLD_SCALE * WORLD_SCALE;
 		};
 
 		applyScreenBrightness();
diff --git a/packages/frontend/src/world/room/objects/tabletopLcdButtonsController.ts b/packages/frontend/src/world/room/objects/tabletopLcdButtonsController.ts
index b190097c89..08cbd66870 100644
--- a/packages/frontend/src/world/room/objects/tabletopLcdButtonsController.ts
+++ b/packages/frontend/src/world/room/objects/tabletopLcdButtonsController.ts
@@ -77,6 +77,7 @@ export const tabletopLcdButtonsController = defineObject({
 			if (options.customPicture != null && options.customPicture !== '') {
 				screenMaterial.unfreeze();
 				const tex = new BABYLON.Texture(options.customPicture, scene, false, false, undefined, () => {
+					screenMaterial.emissiveColor = new BABYLON.Color3(1, 1, 1);
 					screenMaterial.emissiveTexture = tex;
 					screenMaterial.emissiveTexture.level = 2;
 					applyFit();
@@ -100,7 +101,7 @@ export const tabletopLcdButtonsController = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
+			screenMaterial.emissiveIntensity = b * 2;
 		};
 
 		applyScreenBrightness();
diff --git a/packages/frontend/src/world/room/objects/tv.ts b/packages/frontend/src/world/room/objects/tv.ts
index 8b5c1eb801..43688e9f86 100644
--- a/packages/frontend/src/world/room/objects/tv.ts
+++ b/packages/frontend/src/world/room/objects/tv.ts
@@ -62,7 +62,7 @@ export const tv = defineObject({
 
 		const applyScreenBrightness = () => {
 			const b = options.screenBrightness;
-			screenMaterial.emissiveColor = new BABYLON.Color3(b, b, b);
+			screenMaterial.emissiveIntensity = b * 2;
 			light.intensity = (7 * b) * WORLD_SCALE * WORLD_SCALE;
 		};