diff --git a/packages/frontend/src/boot/main-boot.ts b/packages/frontend/src/boot/main-boot.ts
index 2bf9029479..8c4e8422e0 100644
--- a/packages/frontend/src/boot/main-boot.ts
+++ b/packages/frontend/src/boot/main-boot.ts
@@ -83,33 +83,6 @@ export async function mainBoot() {
 		});
 	}
 
-	try {
-		if (defaultStore.state.enableSeasonalScreenEffect) {
-			const month = new Date().getMonth() + 1;
-			if (defaultStore.state.hemisphere === 'S') {
-				// ▼南半球
-				if (month === 7 || month === 8) {
-					const SnowfallEffect = (await import('@/scripts/snowfall-effect.js')).SnowfallEffect;
-					new SnowfallEffect({}).render();
-				}
-			} else {
-				// ▼北半球
-				if (month === 12 || month === 1) {
-					const SnowfallEffect = (await import('@/scripts/snowfall-effect.js')).SnowfallEffect;
-					new SnowfallEffect({}).render();
-				} else if (month === 3 || month === 4) {
-					const SakuraEffect = (await import('@/scripts/snowfall-effect.js')).SnowfallEffect;
-					new SakuraEffect({
-						sakura: true,
-					}).render();
-				}
-			}
-		}
-	} catch (error) {
-		// console.error(error);
-		console.error('Failed to initialise the seasonal screen effect canvas context:', error);
-	}
-
 	if ($i) {
 		defaultStore.loaded.then(() => {
 			if (defaultStore.state.accountSetupWizard !== -1) {
@@ -310,13 +283,6 @@ export async function mainBoot() {
 			});
 		}
 
-		if ('Notification' in window) {
-			// 許可を得ていなかったらリクエスト
-			if (Notification.permission === 'default') {
-				Notification.requestPermission();
-			}
-		}
-
 		const main = markRaw(stream.useChannel('main', null, 'System'));
 
 		// 自分の情報が更新されたとき