diff --git a/src/app/content/App.tsx b/src/app/content/App.tsx
index 4b00b1c..9f39ed9 100644
--- a/src/app/content/App.tsx
+++ b/src/app/content/App.tsx
@@ -8,22 +8,11 @@ import RoomDomain from '@/domain/Room'
 import UserInfoDomain from '@/domain/UserInfo'
 import Setup from '@/app/content/views/Setup'
 import MessageListDomain from '@/domain/MessageList'
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useRef } from 'react'
 import { Toaster } from 'sonner'
-import { browserSyncStorage, indexDBStorage } from '@/domain/impls/Storage'
-import { APP_OPEN_STATUS_STORAGE_KEY } from '@/constants/config'
-import LogoIcon0 from '@/assets/images/logo-0.svg'
-import LogoIcon1 from '@/assets/images/logo-1.svg'
-import LogoIcon2 from '@/assets/images/logo-2.svg'
-import LogoIcon3 from '@/assets/images/logo-3.svg'
-import LogoIcon4 from '@/assets/images/logo-4.svg'
-import LogoIcon5 from '@/assets/images/logo-5.svg'
-import LogoIcon6 from '@/assets/images/logo-6.svg'
 
-import { getDay } from 'date-fns'
 import DanmakuContainer from './components/DanmakuContainer'
 import DanmakuDomain from '@/domain/Danmaku'
-import { browser } from 'wxt/browser'
 
 export default function App() {
   const send = useRemeshSend()
@@ -32,13 +21,11 @@ export default function App() {
   const messageListDomain = useRemeshDomain(MessageListDomain())
   const danmakuDomain = useRemeshDomain(DanmakuDomain())
   const danmakuIsEnabled = useRemeshQuery(danmakuDomain.query.IsEnabledQuery())
-  const userInfo = useRemeshQuery(userInfoDomain.query.UserInfoQuery())
   const userInfoSetFinished = useRemeshQuery(userInfoDomain.query.UserInfoSetIsFinishedQuery())
   const userInfoLoadFinished = useRemeshQuery(userInfoDomain.query.UserInfoLoadIsFinishedQuery())
   const messageListLoadFinished = useRemeshQuery(messageListDomain.query.LoadIsFinishedQuery())
-  const notUserInfo = userInfoLoadFinished && !userInfoSetFinished
 
-  const DayLogo = [LogoIcon0, LogoIcon1, LogoIcon2, LogoIcon3, LogoIcon4, LogoIcon5, LogoIcon6][getDay(Date())]
+  const notUserInfo = userInfoLoadFinished && !userInfoSetFinished
 
   useEffect(() => {
     if (messageListLoadFinished) {
@@ -51,23 +38,6 @@ export default function App() {
     }
   }, [userInfoSetFinished, messageListLoadFinished])
 
-  const [appOpen, setAppOpen] = useState(false)
-
-  const handleToggleApp = async () => {
-    const value = !appOpen
-    setAppOpen(value)
-    await indexDBStorage.setItem<boolean>(APP_OPEN_STATUS_STORAGE_KEY, value)
-  }
-
-  const getAppOpenStatus = async () => {
-    const value = await indexDBStorage.getItem<boolean>(APP_OPEN_STATUS_STORAGE_KEY)
-    setAppOpen(!!value)
-  }
-
-  useEffect(() => {
-    getAppOpenStatus()
-  }, [])
-
   const danmakuContainerRef = useRef<HTMLDivElement>(null)
 
   useEffect(() => {
@@ -76,19 +46,18 @@ export default function App() {
       danmakuIsEnabled && send(danmakuDomain.command.DestroyCommand())
     }
   }, [danmakuIsEnabled])
+  console.log(1)
 
   return (
     <>
-      <AppContainer open={appOpen}>
+      <AppContainer>
         <Header />
         <Main />
         <Footer />
         {notUserInfo && <Setup />}
         <Toaster richColors offset="70px" visibleToasts={1} position="top-center"></Toaster>
       </AppContainer>
-      <AppButton onClick={handleToggleApp}>
-        <DayLogo className="max-h-full max-w-full"></DayLogo>
-      </AppButton>
+      <AppButton></AppButton>
       <DanmakuContainer ref={danmakuContainerRef} />
     </>
   )
diff --git a/src/app/content/index.tsx b/src/app/content/index.tsx
index 61b2e09..7f06850 100644
--- a/src/app/content/index.tsx
+++ b/src/app/content/index.tsx
@@ -7,7 +7,7 @@ import { defineContentScript } from 'wxt/sandbox'
 import { createShadowRootUi } from 'wxt/client'
 
 import App from './App'
-import { IndexDBStorageImpl, BrowserSyncStorageImpl, indexDBStorage } from '@/domain/impls/Storage'
+import { LocalStorageImpl, IndexDBStorageImpl, BrowserSyncStorageImpl } from '@/domain/impls/Storage'
 import { PeerRoomImpl } from '@/domain/impls/PeerRoom'
 import { DanmakuImpl } from '@/domain/impls/Danmaku'
 // import { PeerRoomImpl } from '@/domain/impls/PeerRoom2'
@@ -23,7 +23,7 @@ export default defineContentScript({
   excludeMatches: ['*://localhost/*', '*://127.0.0.1/*'],
   async main(ctx) {
     const store = Remesh.store({
-      externs: [IndexDBStorageImpl, BrowserSyncStorageImpl, PeerRoomImpl, ToastImpl, DanmakuImpl]
+      externs: [LocalStorageImpl, IndexDBStorageImpl, BrowserSyncStorageImpl, PeerRoomImpl, ToastImpl, DanmakuImpl]
       // inspectors: __DEV__ ? [RemeshLogger()] : []
     })
 
diff --git a/src/app/content/views/AppButton/index.tsx b/src/app/content/views/AppButton/index.tsx
index 76f8bb3..21962d3 100644
--- a/src/app/content/views/AppButton/index.tsx
+++ b/src/app/content/views/AppButton/index.tsx
@@ -1,4 +1,4 @@
-import { type ReactNode, type FC, useState, type MouseEvent, useRef } from 'react'
+import { type FC, useState, type MouseEvent, useRef } from 'react'
 import { SettingsIcon, MoonIcon, SunIcon } from 'lucide-react'
 import { motion, AnimatePresence } from 'framer-motion'
 
@@ -10,17 +10,25 @@ import UserInfoDomain from '@/domain/UserInfo'
 import useClickAway from '@/hooks/useClickAway'
 import { checkSystemDarkMode, cn } from '@/utils'
 import ToastDomain from '@/domain/Toast'
+import LogoIcon0 from '@/assets/images/logo-0.svg'
+import LogoIcon1 from '@/assets/images/logo-1.svg'
+import LogoIcon2 from '@/assets/images/logo-2.svg'
+import LogoIcon3 from '@/assets/images/logo-3.svg'
+import LogoIcon4 from '@/assets/images/logo-4.svg'
+import LogoIcon5 from '@/assets/images/logo-5.svg'
+import LogoIcon6 from '@/assets/images/logo-6.svg'
+import AppStatusDomain from '@/domain/AppStatus'
+import { getDay } from 'date-fns'
 
-export interface AppButtonProps {
-  children?: ReactNode
-  onClick?: (e: MouseEvent<HTMLButtonElement>) => void
-}
-
-const AppButton: FC<AppButtonProps> = ({ children, onClick }) => {
+const AppButton: FC = () => {
   const send = useRemeshSend()
+  const appStatusDomain = useRemeshDomain(AppStatusDomain())
+  const appOpenStatus = useRemeshQuery(appStatusDomain.query.OpenQuery())
+  const hasUnreadQuery = useRemeshQuery(appStatusDomain.query.HasUnreadQuery())
   const userInfoDomain = useRemeshDomain(UserInfoDomain())
   const userInfo = useRemeshQuery(userInfoDomain.query.UserInfoQuery())
   const toastDomain = useRemeshDomain(ToastDomain())
+  const DayLogo = [LogoIcon0, LogoIcon1, LogoIcon2, LogoIcon3, LogoIcon4, LogoIcon5, LogoIcon6][getDay(Date())]
 
   const isDarkMode =
     userInfo?.themeMode === 'dark' ? true : userInfo?.themeMode === 'light' ? false : checkSystemDarkMode()
@@ -51,12 +59,16 @@ const AppButton: FC<AppButtonProps> = ({ children, onClick }) => {
     browser.runtime.sendMessage(EVENT.OPEN_OPTIONS_PAGE)
   }
 
+  const handleToggleApp = () => {
+    send(appStatusDomain.command.UpdateOpenCommand(!appOpenStatus))
+  }
+
   return (
     <div ref={menuRef} className="fixed bottom-5 right-5 z-infinity grid select-none justify-center gap-y-3">
       <AnimatePresence>
         {menuOpen && (
           <motion.div
-            className="z-infinity grid gap-y-3"
+            className="z-10 grid gap-y-3"
             initial={{ opacity: 0, y: 12 }}
             animate={{ opacity: 1, y: 0 }}
             exit={{ opacity: 0, y: 12 }}
@@ -90,11 +102,27 @@ const AppButton: FC<AppButtonProps> = ({ children, onClick }) => {
         )}
       </AnimatePresence>
       <Button
-        onClick={onClick}
+        onClick={handleToggleApp}
         onContextMenu={handleToggleMenu}
-        className="relative z-10 size-11 overflow-hidden rounded-full p-0 text-xs shadow-lg shadow-slate-500/50"
+        className="relative z-20 size-11 rounded-full p-0 text-xs shadow-lg shadow-slate-500/50"
       >
-        {children}
+        <AnimatePresence>
+          {hasUnreadQuery && (
+            <motion.div
+              initial={{ opacity: 0 }}
+              animate={{ opacity: 1 }}
+              exit={{ opacity: 0 }}
+              transition={{ duration: 0.1 }}
+              className="absolute -right-1 -top-1 flex size-5 items-center justify-center"
+            >
+              <span
+                className={cn('absolute inline-flex size-full animate-ping rounded-full opacity-75', 'bg-orange-400')}
+              ></span>
+              <span className={cn('relative inline-flex size-3 rounded-full', 'bg-orange-500')}></span>
+            </motion.div>
+          )}
+        </AnimatePresence>
+        <DayLogo className="max-h-full max-w-full"></DayLogo>
       </Button>
     </div>
   )
diff --git a/src/app/content/views/AppContainer/index.tsx b/src/app/content/views/AppContainer/index.tsx
index c69261c..a35cac8 100644
--- a/src/app/content/views/AppContainer/index.tsx
+++ b/src/app/content/views/AppContainer/index.tsx
@@ -1,13 +1,17 @@
 import { type ReactNode, type FC } from 'react'
 import useResizable from '@/hooks/useResizable'
 import { motion, AnimatePresence } from 'framer-motion'
+import AppStatusDomain from '@/domain/AppStatus'
+import { useRemeshDomain, useRemeshQuery } from 'remesh-react'
 
 export interface AppContainerProps {
   children?: ReactNode
-  open?: boolean
 }
 
-const AppContainer: FC<AppContainerProps> = ({ children, open }) => {
+const AppContainer: FC<AppContainerProps> = ({ children }) => {
+  const appStatusDomain = useRemeshDomain(AppStatusDomain())
+  const appOpenStatus = useRemeshQuery(appStatusDomain.query.OpenQuery())
+
   const { size, ref } = useResizable({
     initSize: Math.max(375, window.innerWidth / 6),
     maxSize: Math.min(750, window.innerWidth / 3),
@@ -17,7 +21,7 @@ const AppContainer: FC<AppContainerProps> = ({ children, open }) => {
 
   return (
     <AnimatePresence>
-      {open && (
+      {appOpenStatus && (
         <motion.div
           initial={{ opacity: 0, y: 10, x: 10 }}
           animate={{ opacity: 1, y: 0, x: 0 }}
diff --git a/src/app/content/views/Header/index.tsx b/src/app/content/views/Header/index.tsx
index 58dea61..ff763a8 100644
--- a/src/app/content/views/Header/index.tsx
+++ b/src/app/content/views/Header/index.tsx
@@ -11,7 +11,6 @@ const Header: FC = () => {
   const siteInfo = getSiteInfo()
   const roomDomain = useRemeshDomain(RoomDomain())
   const userList = useRemeshQuery(roomDomain.query.UserListQuery())
-  const peerId = useRemeshQuery(roomDomain.query.PeerIdQuery())
   const onlineCount = userList.length
 
   return (
@@ -27,7 +26,6 @@ const Header: FC = () => {
           <Button className="overflow-hidden" variant="link">
             <span className="truncate text-lg font-semibold text-slate-600">
               {siteInfo.hostname.replace(/^www\./i, '')}
-              {/* {peerId} */}
             </span>
           </Button>
         </HoverCardTrigger>
diff --git a/src/constants/config.ts b/src/constants/config.ts
index 41ee370..93bc45b 100644
--- a/src/constants/config.ts
+++ b/src/constants/config.ts
@@ -191,7 +191,7 @@ export const MESSAGE_LIST_STORAGE_KEY = 'WEB_CHAT_MESSAGE_LIST' as const
 
 export const USER_INFO_STORAGE_KEY = 'WEB_CHAT_USER_INFO' as const
 
-export const APP_OPEN_STATUS_STORAGE_KEY = 'WEB_CHAT_APP_OPEN_STATUS' as const
+export const APP_STATUS_STORAGE_KEY = 'WEB_CHAT_APP_OPEN_STATUS' as const
 /**
  * In chrome storage.sync, each key-value pair supports a maximum storage of 8kb
  * Image is encoded as base64, and the size is increased by about 33%.
diff --git a/src/domain/AppStatus.ts b/src/domain/AppStatus.ts
new file mode 100644
index 0000000..381ad61
--- /dev/null
+++ b/src/domain/AppStatus.ts
@@ -0,0 +1,144 @@
+import { Remesh } from 'remesh'
+import StatusModule from './modules/Status'
+import { LocalStorageExtern } from './externs/Storage'
+import { APP_STATUS_STORAGE_KEY } from '@/constants/config'
+import StorageEffect from './modules/StorageEffect'
+import RoomDomain, { SendType } from './Room'
+import { map } from 'rxjs'
+
+export interface AppStatus {
+  open: boolean
+  unread: number
+}
+
+export const defaultStatusState = {
+  open: false,
+  unread: 0
+}
+
+const AppStatusDomain = Remesh.domain({
+  name: 'AppStatusDomain',
+  impl: (domain) => {
+    const storageEffect = new StorageEffect({
+      domain,
+      extern: LocalStorageExtern,
+      key: APP_STATUS_STORAGE_KEY
+    })
+    const roomDomain = domain.getDomain(RoomDomain())
+
+    const StatusLoadModule = StatusModule(domain, {
+      name: 'AppStatus.LoadStatusModule'
+    })
+
+    const StatusLoadIsFinishedQuery = domain.query({
+      name: 'AppStatus.StatusLoadIsFinishedQuery',
+      impl: () => {
+        return StatusLoadModule.query.IsFinishedQuery()
+      }
+    })
+
+    const StatusState = domain.state<AppStatus>({
+      name: 'AppStatus.OpenState',
+      default: defaultStatusState
+    })
+
+    const OpenQuery = domain.query({
+      name: 'AppStatus.IsOpenQuery',
+      impl: ({ get }) => {
+        return get(StatusState()).open
+      }
+    })
+
+    const UnreadQuery = domain.query({
+      name: 'AppStatus.UnreadQuery',
+      impl: ({ get }) => {
+        return get(StatusState()).unread
+      }
+    })
+
+    const HasUnreadQuery = domain.query({
+      name: 'AppStatus.HasUnreadQuery',
+      impl: ({ get }) => {
+        return get(StatusState()).unread > 0
+      }
+    })
+
+    const UpdateOpenCommand = domain.command({
+      name: 'AppStatus.UpdateOpenCommand',
+      impl: ({ get }, value: boolean) => {
+        const status = get(StatusState())
+        return UpdateStatusCommand({
+          unread: value ? 0 : status.unread,
+          open: value
+        })
+      }
+    })
+
+    const UpdateUnreadCommand = domain.command({
+      name: 'AppStatus.UpdateUnreadCommand',
+      impl: ({ get }, value: number) => {
+        const status = get(StatusState())
+        return UpdateStatusCommand({
+          ...status,
+          unread: value
+        })
+      }
+    })
+
+    const UpdateStatusCommand = domain.command({
+      name: 'AppStatus.UpdateStatusCommand',
+      impl: (_, value: AppStatus) => {
+        return [StatusState().new(value), SyncToStorageEvent()]
+      }
+    })
+
+    const SyncToStorageEvent = domain.event({
+      name: 'UserInfo.SyncToStorageEvent',
+      impl: ({ get }) => {
+        return get(StatusState())
+      }
+    })
+
+    storageEffect
+      .set(SyncToStorageEvent)
+      .get<AppStatus>((value) => [
+        UpdateStatusCommand(value ?? defaultStatusState),
+        StatusLoadModule.command.SetFinishedCommand()
+      ])
+      .watch<AppStatus>((value) => [UpdateStatusCommand(value ?? defaultStatusState)])
+
+    domain.effect({
+      name: 'OnMessageEffect',
+      impl: ({ fromEvent, get }) => {
+        const onMessage$ = fromEvent(roomDomain.event.OnMessageEvent).pipe(
+          map((message) => {
+            const status = get(StatusState())
+            if (!status.open && message.type === SendType.Text) {
+              return UpdateUnreadCommand(status.unread + 1)
+            }
+            return null
+          })
+        )
+        return onMessage$
+      }
+    })
+
+    return {
+      query: {
+        OpenQuery,
+        UnreadQuery,
+        HasUnreadQuery,
+        StatusLoadIsFinishedQuery
+      },
+      command: {
+        UpdateOpenCommand,
+        UpdateUnreadCommand
+      },
+      event: {
+        SyncToStorageEvent
+      }
+    }
+  }
+})
+
+export default AppStatusDomain
diff --git a/src/domain/externs/Storage.ts b/src/domain/externs/Storage.ts
index 029058e..dea51af 100644
--- a/src/domain/externs/Storage.ts
+++ b/src/domain/externs/Storage.ts
@@ -15,6 +15,30 @@ export interface Storage {
   unwatch: Unwatch
 }
 
+export const LocalStorageExtern = Remesh.extern<Storage>({
+  default: {
+    name: 'STORAGE',
+    get: async () => {
+      throw new Error('"get" not implemented.')
+    },
+    set: async () => {
+      throw new Error('"set" not implemented.')
+    },
+    remove: async () => {
+      throw new Error('"remove" not implemented.')
+    },
+    clear: async () => {
+      throw new Error('"clear" not implemented.')
+    },
+    watch: async () => {
+      throw new Error('"watch" not implemented.')
+    },
+    unwatch: async () => {
+      throw new Error('"unwatch" not implemented.')
+    }
+  }
+})
+
 export const IndexDBStorageExtern = Remesh.extern<Storage>({
   default: {
     name: 'STORAGE',
diff --git a/src/domain/impls/Storage.ts b/src/domain/impls/Storage.ts
index 6b0eccd..29b3358 100644
--- a/src/domain/impls/Storage.ts
+++ b/src/domain/impls/Storage.ts
@@ -1,11 +1,16 @@
 import { createStorage } from 'unstorage'
 import indexedDbDriver from 'unstorage/drivers/indexedb'
-import { IndexDBStorageExtern, BrowserSyncStorageExtern } from '@/domain/externs/Storage'
+import localStorageDriver from 'unstorage/drivers/localstorage'
+import { LocalStorageExtern, IndexDBStorageExtern, BrowserSyncStorageExtern } from '@/domain/externs/Storage'
 import { STORAGE_NAME } from '@/constants/config'
 import { webExtensionDriver } from '@/utils/webExtensionDriver'
 import { browser } from 'wxt/browser'
 import { Storage } from '@/domain/externs/Storage'
 
+export const localStorage = createStorage({
+  driver: localStorageDriver({ base: `${STORAGE_NAME}:` })
+})
+
 export const indexDBStorage = createStorage({
   driver: indexedDbDriver({ base: `${STORAGE_NAME}:` })
 })
@@ -14,6 +19,16 @@ export const browserSyncStorage = createStorage({
   driver: webExtensionDriver({ storageArea: 'sync' })
 })
 
+export const LocalStorageImpl = LocalStorageExtern.impl({
+  name: STORAGE_NAME,
+  get: localStorage.getItem,
+  set: localStorage.setItem,
+  remove: localStorage.removeItem,
+  clear: localStorage.clear,
+  watch: localStorage.watch as Storage['watch'],
+  unwatch: localStorage.unwatch
+})
+
 export const IndexDBStorageImpl = IndexDBStorageExtern.impl({
   name: STORAGE_NAME,
   get: indexDBStorage.getItem,