diff --git a/.prettierrc b/.prettierrc
index 1bc57c5..806e3c5 100644
--- a/.prettierrc
+++ b/.prettierrc
@@ -2,6 +2,6 @@
   "semi": false,
   "singleQuote": true,
   "trailingComma": "none",
-  "printWidth": 160,
+  "printWidth": 120,
   "tailwindFunction": ["clsx"]
 }
diff --git a/package.json b/package.json
index 06aa5b2..fc0da1c 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "type": "module",
   "scripts": {
     "dev": "wxt",
+    "dev:signaling": "y-webrtc-signaling",
     "dev:firefox": "wxt -b firefox",
     "build": "wxt build",
     "build:firefox": "wxt build -b firefox",
diff --git a/src/app/content/index.tsx b/src/app/content/index.tsx
index 6887edd..59aacc2 100644
--- a/src/app/content/index.tsx
+++ b/src/app/content/index.tsx
@@ -18,7 +18,7 @@ export default defineContentScript({
   async main(ctx) {
     const doc = new Y.Doc()
     // eslint-disable-next-line no-new
-    new WebrtcProvider(__NAME__, doc)
+    new WebrtcProvider(__NAME__, doc, { signaling: ['ws://localhost:4444'] })
 
     const store = Remesh.store({
       externs: [IndexDBStorageImpl, BrowserSyncStorageImpl, RemeshYjsExtern.impl({ doc })],
diff --git a/src/app/content/views/AppButton/index.tsx b/src/app/content/views/AppButton/index.tsx
index 22f7771..9d30548 100644
--- a/src/app/content/views/AppButton/index.tsx
+++ b/src/app/content/views/AppButton/index.tsx
@@ -1,20 +1,28 @@
 import { type ReactNode, type FC, useState, type MouseEvent, useRef } from 'react'
 import { SettingsIcon, MoonIcon, SunIcon } from 'lucide-react'
-import { useClickAway } from 'react-use'
+
 import { browser } from 'wxt/browser'
-import { useRemeshDomain, useRemeshQuery } from 'remesh-react'
+import { useRemeshDomain, useRemeshQuery, useRemeshSend } from 'remesh-react'
 import { Button } from '@/components/ui/Button'
 import { EVENTS } from '@/constants'
 import UserInfoDomain from '@/domain/UserInfo'
+import useClickAway from '@/hooks/useClickAway'
 
 export interface AppButtonProps {
   children?: ReactNode
 }
 
 const AppButton: FC<AppButtonProps> = ({ children }) => {
+  const send = useRemeshSend()
   const userInfoDomain = useRemeshDomain(UserInfoDomain())
   const userInfo = useRemeshQuery(userInfoDomain.query.UserInfoQuery())
-  console.log(userInfo)
+
+  const isDarkMode =
+    userInfo?.themeMode === 'dark'
+      ? true
+      : userInfo?.themeMode === 'light'
+        ? false
+        : window.matchMedia('(prefers-color-scheme: dark)').matches
 
   const [open, setOpen] = useState(false)
 
@@ -32,42 +40,46 @@ const AppButton: FC<AppButtonProps> = ({ children }) => {
     ['click']
   )
 
-  const handleToggle = (e: MouseEvent<HTMLButtonElement>) => {
+  const handleToggleMenu = (e: MouseEvent<HTMLButtonElement>) => {
     e.preventDefault()
     setOpen(!open)
   }
 
+  const handleSwitchTheme = () => {
+    if (userInfo) {
+      send(userInfoDomain.command.UpdateUserInfoCommand({ ...userInfo, themeMode: isDarkMode ? 'light' : 'dark' }))
+    } else {
+      // TODO
+    }
+  }
+
   const handleOpenOptionsPage = () => {
     browser.runtime.sendMessage(EVENTS.OPEN_OPTIONS_PAGE)
   }
 
   return (
     <div ref={menuRef} className="fixed bottom-5 right-5 z-top grid select-none justify-center gap-y-3">
-      <div className="grid gap-y-3" inert={!open && ''}>
-        {/* <Button
+      {/* <div className="grid gap-y-3" inert={!open && ''}> */}
+      <div className="pointer-events-none grid gap-y-3">
+        <Button
+          onClick={handleSwitchTheme}
           variant="outline"
           data-state={open ? 'open' : 'closed'}
-          className="h-10 w-10 rounded-full p-0 shadow fill-mode-forwards data-[state=open]:duration-500 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out data-[state=open]:fade-in data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom"
+          className="pointer-events-auto h-10 w-10 rounded-full p-0 shadow fill-mode-forwards data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out data-[state=open]:fade-in data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom"
         >
           <MoonIcon size={20} />
-        </Button> */}
-        <Button
-          variant="outline"
-          data-state={open ? 'open' : 'closed'}
-          className="h-10 w-10 rounded-full p-0 shadow fill-mode-forwards data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out data-[state=open]:fade-in data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom"
-        >
-          <SunIcon size={20} />
+          {/* <SunIcon size={20} /> */}
         </Button>
         <Button
           onClick={handleOpenOptionsPage}
           variant="outline"
           data-state={open ? 'open' : 'closed'}
-          className="h-10 w-10 rounded-full p-0 shadow fill-mode-forwards data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out data-[state=open]:fade-in data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom"
+          className="pointer-events-auto h-10 w-10 rounded-full p-0 shadow fill-mode-forwards data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out data-[state=open]:fade-in data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom"
         >
           <SettingsIcon size={20} />
         </Button>
       </div>
-      <Button onContextMenu={handleToggle} className="relative z-10 h-10 w-10 rounded-full p-0 text-xs shadow">
+      <Button onContextMenu={handleToggleMenu} className="relative z-10 h-10 w-10 rounded-full p-0 text-xs shadow">
         {children}
       </Button>
     </div>
diff --git a/src/app/options/components/ProfileForm.tsx b/src/app/options/components/ProfileForm.tsx
index ff40896..8c785d8 100644
--- a/src/app/options/components/ProfileForm.tsx
+++ b/src/app/options/components/ProfileForm.tsx
@@ -1,7 +1,6 @@
 import { type Output, object, string, minBytes, maxBytes, toTrimmed, union, literal, notLength, number } from 'valibot'
 import { useForm } from 'react-hook-form'
 import { valibotResolver } from '@hookform/resolvers/valibot'
-
 import { toast } from 'sonner'
 import { useRemeshDomain, useRemeshQuery, useRemeshSend } from 'remesh-react'
 import { nanoid } from 'nanoid'
@@ -32,7 +31,11 @@ const formSchema = object({
   createTime: number(),
   // Pure numeric strings will be converted to number
   // Issues: https://github.com/unjs/unstorage/issues/277
-  name: string([toTrimmed(), minBytes(1, 'Please enter your username.'), maxBytes(20, 'Your username cannot exceed 20 bytes.')]),
+  name: string([
+    toTrimmed(),
+    minBytes(1, 'Please enter your username.'),
+    maxBytes(20, 'Your username cannot exceed 20 bytes.')
+  ]),
   avatar: string([notLength(0, 'Please select your avatar.'), maxBytes(8 * 1024, 'Your avatar cannot exceed 8kb.')]),
   themeMode: union([literal('system'), literal('light'), literal('dark')], 'Please select extension theme mode.')
 })
@@ -47,12 +50,13 @@ const ProfileForm = () => {
     defaultValues: userInfo ?? defaultUserInfo
   })
 
+  // Update defaultValues
   useEffect(() => {
     userInfo && form.reset(userInfo)
   }, [userInfo, form])
 
   const handleSubmit = (userInfo: Output<typeof formSchema>) => {
-    send(userInfoDomain.command.SetUserInfoCommand(userInfo))
+    send(userInfoDomain.command.UpdateUserInfoCommand(userInfo))
     toast.success('Saved successfully!')
   }
 
@@ -73,7 +77,13 @@ const ProfileForm = () => {
           render={({ field }) => (
             <FormItem className="absolute left-1/2 top-0 grid -translate-x-1/2 -translate-y-1/2 justify-items-center">
               <FormControl>
-                <AvatarSelect compressSize={COMPRESS_SIZE} onError={handleError} onWarning={handleWarning} className="shadow-lg" {...field}></AvatarSelect>
+                <AvatarSelect
+                  compressSize={COMPRESS_SIZE}
+                  onError={handleError}
+                  onWarning={handleWarning}
+                  className="shadow-lg"
+                  {...field}
+                ></AvatarSelect>
               </FormControl>
               <FormMessage />
             </FormItem>
@@ -115,7 +125,9 @@ const ProfileForm = () => {
                   </div>
                 </RadioGroup>
               </FormControl>
-              <FormDescription>The theme mode of the extension. If you choose the system, will follow the system theme.</FormDescription>
+              <FormDescription>
+                The theme mode of the extension. If you choose the system, will follow the system theme.
+              </FormDescription>
               <FormMessage />
             </FormItem>
           )}
diff --git a/src/components/ui/Popover.tsx b/src/components/ui/Popover.tsx
index 2c85928..c6549cd 100644
--- a/src/components/ui/Popover.tsx
+++ b/src/components/ui/Popover.tsx
@@ -10,7 +10,7 @@ const PopoverContent = React.forwardRef<
   React.ElementRef<typeof PopoverPrimitive.Content>,
   React.ComponentPropsWithoutRef<typeof PopoverPrimitive.Content>
 >(({ className, align = 'center', sideOffset = 4, ...props }, ref) => {
-  const shadowRoot = document.querySelector(__NAME__)!.shadowRoot! as any as HTMLElement
+  const shadowRoot = document.querySelector(__NAME__)!.shadowRoot! as unknown as HTMLElement
   return (
     <PopoverPrimitive.Portal container={shadowRoot}>
       <PopoverPrimitive.Content
diff --git a/src/domain/MessageList.ts b/src/domain/MessageList.ts
index 69e80be..eb5fb7d 100644
--- a/src/domain/MessageList.ts
+++ b/src/domain/MessageList.ts
@@ -2,6 +2,7 @@ import { Remesh } from 'remesh'
 import { ListModule } from 'remesh/modules/list'
 import { nanoid } from 'nanoid'
 import { from, map, tap, merge } from 'rxjs'
+import { RemeshYjs } from 'remesh-yjs'
 import { IndexDBStorageExtern } from './externs/Storage'
 
 const MessageListDomain = Remesh.domain({
@@ -92,11 +93,24 @@ const MessageListDomain = Remesh.domain({
     domain.effect({
       name: 'FormStateToStorageEffect',
       impl: ({ fromEvent }) => {
-        const changeList$ = fromEvent(ChangeListEvent).pipe(tap(async (messages) => await storage.set<Message[]>(storageKey, messages)))
+        const changeList$ = fromEvent(ChangeListEvent).pipe(
+          tap(async (messages) => await storage.set<Message[]>(storageKey, messages))
+        )
         return merge(changeList$).pipe(map(() => null))
       }
     })
 
+    RemeshYjs(domain, {
+      key: 'MessageList',
+      dataType: 'array',
+      onSend: ({ get }): Message[] => {
+        return get(ListQuery())
+      },
+      onReceive: (_, messages: Message[]) => {
+        return InitListCommand(messages)
+      }
+    })
+
     return {
       query: {
         ItemQuery,
diff --git a/src/domain/UserInfo.ts b/src/domain/UserInfo.ts
index 82fcaef..aa26bfc 100644
--- a/src/domain/UserInfo.ts
+++ b/src/domain/UserInfo.ts
@@ -1,7 +1,7 @@
 import { Remesh } from 'remesh'
-import { forkJoin, from, map, merge, tap } from 'rxjs'
+import { forkJoin, from, map, merge, switchMap, tap } from 'rxjs'
 import { BrowserSyncStorageExtern } from './externs/Storage'
-import { isNullish } from '@/utils'
+import { isNullish, storageToObservable } from '@/utils'
 
 const UserInfoDomain = Remesh.domain({
   name: 'UserInfoDomain',
@@ -27,8 +27,8 @@ const UserInfoDomain = Remesh.domain({
       }
     })
 
-    const SetUserInfoCommand = domain.command({
-      name: 'UserInfo.SetUserInfoCommand',
+    const UpdateUserInfoCommand = domain.command({
+      name: 'UserInfo.UpdateUserInfoCommand',
       impl: (_, userInfo: UserInfo | null) => {
         return [UserInfoState().new(userInfo), UpdateUserInfoEvent()]
       }
@@ -59,9 +59,9 @@ const UserInfoDomain = Remesh.domain({
               !isNullish(userInfo.createTime) &&
               !isNullish(userInfo.themeMode)
             ) {
-              return SetUserInfoCommand(userInfo as UserInfo)
+              return UpdateUserInfoCommand(userInfo as UserInfo)
             } else {
-              return SetUserInfoCommand(null)
+              return UpdateUserInfoCommand(null)
             }
           })
         )
@@ -77,22 +77,55 @@ const UserInfoDomain = Remesh.domain({
               storage.set<UserInfo['id'] | null>(storageKeys.USER_INFO_ID, userInfo?.id ?? null),
               storage.set<UserInfo['name'] | null>(storageKeys.USER_INFO_NAME, userInfo?.name ?? null),
               storage.set<UserInfo['avatar'] | null>(storageKeys.USER_INFO_AVATAR, userInfo?.avatar ?? null),
-              storage.set<UserInfo['createTime'] | null>(storageKeys.USER_INFO_CREATE_TIME, userInfo?.createTime ?? null),
+              storage.set<UserInfo['createTime'] | null>(
+                storageKeys.USER_INFO_CREATE_TIME,
+                userInfo?.createTime ?? null
+              ),
               storage.set<UserInfo['themeMode'] | null>(storageKeys.USER_INFO_THEME_MODE, userInfo?.themeMode ?? null)
             ])
           })
         )
-
         return merge(changeUserInfo$).pipe(map(() => null))
       }
     })
 
+    domain.effect({
+      name: 'WatchStorageEffect',
+      impl: () => {
+        return storageToObservable(storage).pipe(
+          switchMap(() => {
+            return forkJoin({
+              id: from(storage.get<UserInfo['id']>(storageKeys.USER_INFO_ID)),
+              name: from(storage.get<UserInfo['name']>(storageKeys.USER_INFO_NAME)),
+              avatar: from(storage.get<UserInfo['avatar']>(storageKeys.USER_INFO_AVATAR)),
+              createTime: from(storage.get<UserInfo['createTime']>(storageKeys.USER_INFO_CREATE_TIME)),
+              themeMode: from(storage.get<UserInfo['themeMode']>(storageKeys.USER_INFO_THEME_MODE))
+            }).pipe(
+              map((userInfo) => {
+                if (
+                  !isNullish(userInfo.id) &&
+                  !isNullish(userInfo.name) &&
+                  !isNullish(userInfo.avatar) &&
+                  !isNullish(userInfo.createTime) &&
+                  !isNullish(userInfo.themeMode)
+                ) {
+                  return UpdateUserInfoCommand(userInfo as UserInfo)
+                } else {
+                  return UpdateUserInfoCommand(null)
+                }
+              })
+            )
+          })
+        )
+      }
+    })
+
     return {
       query: {
         UserInfoQuery
       },
       command: {
-        SetUserInfoCommand
+        UpdateUserInfoCommand
       },
       event: {
         UpdateUserInfoEvent
diff --git a/src/hooks/useClickAway.ts b/src/hooks/useClickAway.ts
new file mode 100644
index 0000000..fcf07e0
--- /dev/null
+++ b/src/hooks/useClickAway.ts
@@ -0,0 +1,45 @@
+import { type RefObject, useEffect, useRef } from 'react'
+
+export type Events = Array<keyof GlobalEventHandlersEventMap>
+
+const useClickAway = <E extends Event = Event>(
+  ref: RefObject<HTMLElement | null>,
+  onClickAway: (event: E) => void,
+  events: Events = ['mousedown', 'touchstart']
+) => {
+  const savedCallback = useRef(onClickAway)
+  useEffect(() => {
+    savedCallback.current = onClickAway
+  }, [onClickAway])
+  useEffect(() => {
+    const { current: el } = ref
+    if (!el) return
+
+    const rootNode = el.getRootNode()
+    const isInShadow = rootNode instanceof ShadowRoot
+
+    /**
+     * When events are captured outside the component, events that occur in shadow DOM will target the host element
+     * so additional event listeners need to be added for shadowDom
+     *
+     *  document       shadowDom            target
+     *    |                |                   |
+     *    |- on(document) -|-  on(shadowRoot) -|
+     */
+    const handler = (event: SafeAny) => {
+      !el.contains(event.target) && event.target.shadowRoot !== rootNode && savedCallback.current(event)
+    }
+    for (const eventName of events) {
+      document.addEventListener(eventName, handler)
+      isInShadow && rootNode.addEventListener(eventName, handler)
+    }
+    return () => {
+      for (const eventName of events) {
+        document.removeEventListener(eventName, handler)
+        isInShadow && rootNode.removeEventListener(eventName, handler)
+      }
+    }
+  }, [events, ref])
+}
+
+export default useClickAway
diff --git a/src/types/global.d.ts b/src/types/global.d.ts
index a1eaf59..d065121 100644
--- a/src/types/global.d.ts
+++ b/src/types/global.d.ts
@@ -1,4 +1,5 @@
-declare interface Message {
+// eslint-disable-next-line @typescript-eslint/consistent-type-definitions
+declare type Message = {
   id: string
   userId: string
   body: string
@@ -20,3 +21,5 @@ declare interface UserInfo {
   createTime: number
   themeMode: 'system' | 'light' | 'dark'
 }
+
+declare type SafeAny = any
diff --git a/src/utils/index.ts b/src/utils/index.ts
index f6d0181..a9e546e 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -7,3 +7,4 @@ export { default as chunk } from './chunk'
 export { default as compressImage } from './compressImage'
 export { default as isNullish } from './isNullish'
 export { default as checkSystemDarkMode } from './checkSystemDarkMode'
+export { default as storageToObservable } from './storageToObservable'
diff --git a/src/utils/isNullish.ts b/src/utils/isNullish.ts
index 22e980e..43c3e53 100644
--- a/src/utils/isNullish.ts
+++ b/src/utils/isNullish.ts
@@ -1,3 +1,3 @@
-const isNullish = (value: any) => value === undefined || value === null
+const isNullish = <T = any>(value: T) => value === undefined || value === null
 
 export default isNullish
diff --git a/src/utils/storageToObservable.ts b/src/utils/storageToObservable.ts
new file mode 100644
index 0000000..a8b80ac
--- /dev/null
+++ b/src/utils/storageToObservable.ts
@@ -0,0 +1,15 @@
+import { Observable } from 'rxjs'
+import { type Storage } from '@/domain/externs/Storage'
+
+const storageToObservable = (storage: Storage) => {
+  return new Observable((subscriber) => {
+    storage.watch((event) => {
+      subscriber.next(event)
+    })
+    return () => {
+      storage.unwatch()
+    }
+  })
+}
+
+export default storageToObservable