diff --git a/src/components/DataSync.svelte b/src/components/DataSync.svelte
index 782753ec..126cd21e 100644
--- a/src/components/DataSync.svelte
+++ b/src/components/DataSync.svelte
@@ -17,6 +17,7 @@
   const SCOPES = 'https://www.googleapis.com/auth/drive.appdata';
 
   let remoteSave = null;
+  let timeout;
 
   $: localSaveExists = $updateTime !== null;
 
@@ -39,9 +40,19 @@
     script.onerror = handleError;
     script.src = 'https://apis.google.com/js/api.js';
     document.body.appendChild(script);
+
+    timeout = setTimeout(() => {
+      handleError();
+    }, 5000);
+  }
+
+  function cancelTimeout() {
+    console.log('cancelling timeout');
+    if (timeout) clearTimeout(timeout);
   }
 
   function handleError() {
+    cancelTimeout();
     console.log('error loading google drive api');
     driveSignedIn.set(false);
     driveLoading.set(false);
@@ -220,6 +231,8 @@
   }
 
   function initClient() {
+    console.log('gapi init client');
+
     gapi.client
       .init({
         apiKey: API_KEY,
@@ -229,6 +242,7 @@
       })
       .then(
         function () {
+          cancelTimeout();
           gapi.auth2.getAuthInstance().isSignedIn.listen(updateSigninStatus);
           updateSigninStatus(gapi.auth2.getAuthInstance().isSignedIn.get());
         },
diff --git a/src/components/SettingData.svelte b/src/components/SettingData.svelte
index d5ea4316..80dfb161 100644
--- a/src/components/SettingData.svelte
+++ b/src/components/SettingData.svelte
@@ -1,5 +1,6 @@
 <script>
   import { server, ar, wl, loading } from '../stores/server';
+  import { accounts, getAccountPrefix } from '../stores/account';
   import { readSave, updateSave, fromRemote } from '../stores/saveManager';
   import { onMount } from 'svelte';
 
@@ -18,6 +19,9 @@
 
   function readLocalData() {
     loading.set(true);
+
+    const prefix = getAccountPrefix();
+
     firstLoad = true;
 
     if (unsubscribeServer) unsubscribeServer();
@@ -25,9 +29,17 @@
     if (unsubscribeWl) unsubscribeWl();
 
     console.log('setting read local');
-    const serverSave = readSave('server');
-    const arSave = readSave('ar');
-    const wlSave = readSave('wl');
+    const accountsSave = readSave('accounts');
+    const serverSave = readSave(`${prefix}server`);
+    const arSave = readSave(`${prefix}ar`);
+    const wlSave = readSave(`${prefix}wl`);
+    if (accountsSave !== null) {
+      const accountList = accountsSave.split(',').map((e) => ({
+        label: `Account ${e.substring(7)}`,
+        value: e,
+      }));
+      accounts.set([{ label: 'Main', value: 'main' }, ...accountList]);
+    }
     if (serverSave !== null) {
       const currentServer = serverSave;
       server.set(currentServer);
@@ -42,20 +54,23 @@
     unsubscribeServer = server.subscribe((val) => {
       if (firstLoad) return;
 
+      const prefix = getAccountPrefix();
       console.log('server changed', val);
-      updateSave('server', val);
+      updateSave(`${prefix}server`, val);
     });
     unsubscribeWl = wl.subscribe((val) => {
       if (firstLoad) return;
 
+      const prefix = getAccountPrefix();
       console.log('wl changed', val);
-      updateSave('wl', val);
+      updateSave(`${prefix}wl`, val);
     });
     unsubscribeAr = ar.subscribe((val) => {
       if (firstLoad) return;
 
+      const prefix = getAccountPrefix();
       console.log('ar changed', val);
-      updateSave('ar', val);
+      updateSave(`${prefix}ar`, val);
     });
 
     firstLoad = false;
diff --git a/src/components/TodoData.svelte b/src/components/TodoData.svelte
index 3b038895..26647302 100644
--- a/src/components/TodoData.svelte
+++ b/src/components/TodoData.svelte
@@ -2,6 +2,7 @@
   import { todos, loading } from '../stores/todo';
   import { readSave, updateSave, fromRemote } from '../stores/saveManager';
   import { onMount } from 'svelte';
+  import { getAccountPrefix, selectedAccount } from '../stores/account';
 
   let unsubscribe = null;
   let firstLoad = true;
@@ -12,6 +13,13 @@
 
   onMount(() => {
     readLocalData();
+
+    const unsub = selectedAccount.subscribe(() => {
+      console.log('account changed, reading todo for the account');
+      readLocalData();
+    });
+
+    return () => unsub();
   });
 
   function readLocalData() {
@@ -20,17 +28,21 @@
 
     if (unsubscribe) unsubscribe();
 
+    const prefix = getAccountPrefix();
+
     console.log('todo read local');
-    const data = readSave('todos');
+    const data = readSave(`${prefix}todos`);
     if (data !== null) {
       const todoList = JSON.parse(data);
       todos.set(todoList);
+    } else {
+      todos.set([]);
     }
 
     unsubscribe = todos.subscribe((val) => {
       if (firstLoad) return;
 
-      updateSave('todos', JSON.stringify(val));
+      updateSave(`${prefix}todos`, JSON.stringify(val));
     });
 
     firstLoad = false;
diff --git a/src/components/WishImportModal.svelte b/src/components/WishImportModal.svelte
index 576eb86d..d42779d0 100644
--- a/src/components/WishImportModal.svelte
+++ b/src/components/WishImportModal.svelte
@@ -12,6 +12,7 @@
   import { weaponList } from '../data/weaponList';
   import { characters } from '../data/characters';
   import { readSave, updateSave } from '../stores/saveManager';
+  import { getAccountPrefix } from '../stores/account';
 
   export let processFirstTimePopup;
   export let closeModal;
@@ -255,8 +256,9 @@
       return new dayjs().year(2000).unix();
     }
 
+    const prefix = getAccountPrefix();
     const path = `wish-counter-${type.id}`;
-    const localData = readSave(path);
+    const localData = readSave(`${prefix}${path}`);
 
     let localWishes = [];
     if (localData !== null) {
@@ -380,8 +382,9 @@
     if (wishes[code] === undefined) return;
     console.log('processing', type.name);
 
+    const prefix = getAccountPrefix();
     const path = `wish-counter-${type.id}`;
-    const localData = readSave(path);
+    const localData = readSave(`${prefix}${path}`);
 
     let localWishes = [];
     if (localData !== null) {
@@ -434,7 +437,7 @@
       pulls: combined,
     });
 
-    updateSave(path, data);
+    updateSave(`${prefix}${path}`, data);
   }
 
   onMount(() => {
diff --git a/src/routes/settings/_deleteAccount.svelte b/src/routes/settings/_deleteAccount.svelte
new file mode 100644
index 00000000..4d631b3c
--- /dev/null
+++ b/src/routes/settings/_deleteAccount.svelte
@@ -0,0 +1,16 @@
+<script>
+  import Button from '../../components/Button.svelte';
+
+  export let account;
+  export let deleteAccount;
+  export let cancel;
+</script>
+
+<div>
+  <p class="text-white font-bold mb-4 text-lg">Delete {account.label}?</p>
+  <p class="text-white mb-4">All todo and wish history data will be deleted</p>
+  <div class="flex justify-end gap-2">
+    <Button on:click={cancel}>Cancel</Button>
+    <Button on:click={deleteAccount} color="red">Delete</Button>
+  </div>
+</div>
diff --git a/src/routes/settings/_resetAccount.svelte b/src/routes/settings/_resetAccount.svelte
new file mode 100644
index 00000000..6006e0c0
--- /dev/null
+++ b/src/routes/settings/_resetAccount.svelte
@@ -0,0 +1,16 @@
+<script>
+  import Button from '../../components/Button.svelte';
+
+  export let account;
+  export let resetAccount;
+  export let cancel;
+</script>
+
+<div>
+  <p class="text-white font-bold mb-4 text-lg">Reset {account.label}?</p>
+  <p class="text-white mb-4">All todo and wish history data will be deleted</p>
+  <div class="flex justify-end gap-2">
+    <Button on:click={cancel}>Cancel</Button>
+    <Button on:click={resetAccount} color="red">Reset</Button>
+  </div>
+</div>
diff --git a/src/routes/settings.svelte b/src/routes/settings/index.svelte
similarity index 55%
rename from src/routes/settings.svelte
rename to src/routes/settings/index.svelte
index 151c419a..902b82e3 100644
--- a/src/routes/settings.svelte
+++ b/src/routes/settings/index.svelte
@@ -1,15 +1,24 @@
 <script>
   import { mdiCheckCircleOutline, mdiChevronDown, mdiDiscord, mdiGithub, mdiGoogleDrive, mdiLoading } from '@mdi/js';
-  import { onMount } from 'svelte';
+  import { getContext, onMount } from 'svelte';
   import { slide } from 'svelte/transition';
 
-  import Button from '../components/Button.svelte';
-  import Icon from '../components/Icon.svelte';
-  import Select from '../components/Select.svelte';
-  import Input from '../components/Input.svelte';
+  import Button from '../../components/Button.svelte';
+  import Icon from '../../components/Icon.svelte';
+  import Select from '../../components/Select.svelte';
+  import Input from '../../components/Input.svelte';
+  import DeleteAccountModal from './_deleteAccount.svelte';
+  import ResetAccountModal from './_resetAccount.svelte';
 
-  import { driveSignedIn, driveError, driveLoading, synced, localModified, lastSyncTime } from '../stores/dataSync';
-  import { server, ar, wl } from '../stores/server';
+  import { driveSignedIn, driveError, driveLoading, synced, localModified, lastSyncTime } from '../../stores/dataSync';
+  import { server, ar, wl } from '../../stores/server';
+  import { accounts, getAccountPrefix, selectedAccount } from '../../stores/account';
+  import { pushToast } from '../../stores/toast';
+  import { readSave, updateSave } from '../../stores/saveManager';
+
+  const { open: openModal, close: closeModal } = getContext('simple-modal');
+
+  let currentAccount = $selectedAccount;
 
   const servers = [
     { label: 'Asia/TW/HK/MO', value: 'Asia' },
@@ -17,6 +26,7 @@
     { label: 'Europe', value: 'Europe' },
   ];
 
+  let mounted = false;
   let selectedServer = null;
   let arInput = '';
   let wlInput = '';
@@ -67,6 +77,155 @@
     }
   }
 
+  function addAccount() {
+    const accountList = $accounts;
+    const accountNumber =
+      accountList.length === 1 ? 2 : Number(accountList[accountList.length - 1].value.substring(7)) + 1;
+
+    const newAccount = { label: `Account ${accountNumber}`, value: `account${accountNumber}` };
+    const updatedAccountList = [...accountList, newAccount];
+    accounts.set(updatedAccountList);
+
+    updateSave(
+      'accounts',
+      updatedAccountList
+        .slice(1)
+        .map((e) => e.value)
+        .join(','),
+    );
+
+    pushToast(`Account ${accountNumber} added, select it on the account list!`);
+  }
+
+  function selectAccount() {
+    if (!mounted) return;
+
+    console.log('changed account to', currentAccount.label);
+
+    selectedAccount.set(currentAccount);
+    const prefix = getAccountPrefix();
+
+    const serverSave = readSave(`${prefix}server`);
+    if (serverSave === null) {
+      selectedServer = { label: 'Asia/TW/HK/MO', value: 'Asia' };
+    } else {
+      const serverSave = readSave(`${prefix}server`);
+      selectedServer = servers.find((e) => e.value === serverSave);
+    }
+
+    const arSave = readSave(`${prefix}ar`);
+    if (arSave === null) {
+      arInput = '45';
+    } else {
+      arInput = arSave;
+    }
+
+    const wlSave = readSave(`${prefix}wl`);
+    if (wlSave === null) {
+      wlInput = '6';
+    } else {
+      wlInput = wlSave;
+    }
+  }
+
+  function deleteAccount() {
+    const prefix = getAccountPrefix();
+
+    const updatedList = $accounts.filter((e) => e.value !== currentAccount.value);
+
+    currentAccount = { label: 'Main', value: 'main' };
+    selectedAccount.set(currentAccount);
+
+    accounts.set(updatedList);
+
+    const keyWillBeDeleted = [
+      'server',
+      'ar',
+      'wl',
+      'todos',
+      'wish-counter-character-event',
+      'wish-counter-weapon-event',
+      'wish-counter-standard',
+      'wish-counter-beginners',
+    ];
+
+    for (let k of keyWillBeDeleted) {
+      localStorage.removeItem(`${prefix}${k}`);
+    }
+
+    if (updatedList.length > 1) {
+      updateSave(
+        'accounts',
+        updatedList
+          .slice(1)
+          .map((e) => e.value)
+          .join(','),
+      );
+    } else {
+      updateSave('accounts', undefined);
+    }
+
+    pushToast('Data deleted');
+    closeModal();
+  }
+
+  function resetAccount() {
+    const prefix = getAccountPrefix();
+
+    const keyWillBeDeleted = [
+      'todos',
+      'wish-counter-character-event',
+      'wish-counter-weapon-event',
+      'wish-counter-standard',
+      'wish-counter-beginners',
+    ];
+
+    for (let k of keyWillBeDeleted) {
+      localStorage.removeItem(`${prefix}${k}`);
+    }
+
+    updateSave(`${prefix}todos`, undefined, true);
+    updateSave(`${prefix}todos`, JSON.stringify([]));
+
+    pushToast('Data deleted');
+    closeModal();
+  }
+
+  function openDeleteAccount() {
+    openModal(
+      DeleteAccountModal,
+      {
+        cancel: closeModal,
+        account: currentAccount,
+        deleteAccount: deleteAccount,
+      },
+      {
+        closeButton: false,
+        styleWindow: { background: '#25294A', width: '300px' },
+      },
+    );
+  }
+
+  function openResetAccount() {
+    openModal(
+      ResetAccountModal,
+      {
+        cancel: closeModal,
+        account: currentAccount,
+        resetAccount: resetAccount,
+      },
+      {
+        closeButton: false,
+        styleWindow: { background: '#25294A', width: '300px' },
+      },
+    );
+  }
+
+  onMount(() => {
+    mounted = true;
+  });
+
+  $: currentAccount, selectAccount();
   $: selectedServer, updateServer();
   $: arInput, updateAR();
   $: wlInput, updateWL();
@@ -82,6 +241,22 @@
   <div class="bg-item rounded-xl mb-4 p-4">
     <p class="text-white">Data Version: <b>1.3</b></p>
   </div>
+  <div class="bg-item rounded-xl mb-4 p-4 flex flex-col">
+    <p class="text-white">Have multiple account? Choose account here to separate your wish and todo data</p>
+    <div class="flex mt-2">
+      <Select
+        className="w-64 mr-2"
+        bind:selected={currentAccount}
+        options={$accounts}
+        placeholder="Select your account"
+      />
+      <Button on:click={openResetAccount} className="mr-2 w-24" color="red">Reset</Button>
+      {#if currentAccount.value !== 'main'}
+        <Button on:click={openDeleteAccount} className="mr-2 w-24" color="red">Delete</Button>
+      {/if}
+      <Button className="w-24" on:click={addAccount}>Add</Button>
+    </div>
+  </div>
   <div class="bg-item rounded-xl mb-4 p-4 flex flex-col md:flex-row">
     <div class="flex flex-col md:flex-row md:items-center mr-2">
       <p class="text-white mr-2">Select your server:</p>
diff --git a/src/routes/wish/_counter.svelte b/src/routes/wish/_counter.svelte
index 3c857d52..8685af0e 100644
--- a/src/routes/wish/_counter.svelte
+++ b/src/routes/wish/_counter.svelte
@@ -15,6 +15,7 @@
   import { characters } from '../../data/characters';
   import dayjs from 'dayjs';
   import { weaponList } from '../../data/weaponList';
+  import { getAccountPrefix } from '../../stores/account';
 
   let numberFormat = Intl.NumberFormat();
 
@@ -153,7 +154,8 @@
 
   export function readLocalData() {
     console.log('wish read local');
-    const data = readSave(path);
+    const prefix = getAccountPrefix();
+    const data = readSave(`${prefix}${path}`);
     if (data !== null) {
       const counterData = JSON.parse(data);
       total = counterData.total;
@@ -171,7 +173,8 @@
       pulls,
     });
 
-    updateSave(path, data);
+    const prefix = getAccountPrefix();
+    updateSave(`${prefix}${path}`, data);
   }, 2000);
 
   function add(val) {
diff --git a/src/routes/wish/_summary.svelte b/src/routes/wish/_summary.svelte
index 6c6860c5..43dde28d 100644
--- a/src/routes/wish/_summary.svelte
+++ b/src/routes/wish/_summary.svelte
@@ -3,6 +3,7 @@
   import { characters } from '../../data/characters';
   import { weaponList } from '../../data/weaponList';
 
+  import { getAccountPrefix } from '../../stores/account';
   import { readSave, updateTime, fromRemote } from '../../stores/saveManager';
   import SummaryItem from './_summaryItem.svelte';
 
@@ -46,10 +47,11 @@
   export function readLocalData() {
     totalWish = 0;
     console.log('wish summary read local');
+    const prefix = getAccountPrefix();
 
     for (let type of types) {
       const path = `wish-counter-${type.id}`;
-      const data = readSave(path);
+      const data = readSave(`${prefix}${path}`);
       if (data !== null) {
         const counterData = JSON.parse(data);
         const pulls = counterData.pulls || [];
diff --git a/src/stores/account.js b/src/stores/account.js
new file mode 100644
index 00000000..d83f882d
--- /dev/null
+++ b/src/stores/account.js
@@ -0,0 +1,13 @@
+import { get, writable } from 'svelte/store';
+
+export const accounts = writable([{ label: 'Main', value: 'main' }]);
+export const selectedAccount = writable({ label: 'Main', value: 'main' });
+
+export const getAccountPrefix = () => {
+  const current = get(selectedAccount);
+  if (current.value === 'main') {
+    return '';
+  } else {
+    return `${current.value}-`;
+  }
+};
diff --git a/src/stores/saveManager.js b/src/stores/saveManager.js
index 129a9cc1..57f8f99d 100644
--- a/src/stores/saveManager.js
+++ b/src/stores/saveManager.js
@@ -10,8 +10,6 @@ export const fromRemote = writable(false);
 
 export const UPDATE_TIME_KEY = 'update-time';
 
-let pendingQueue = [];
-let queueSave = true;
 let saveFileId = '';
 let signedIn = false;
 
@@ -53,10 +51,8 @@ async function saveData(data) {
 
 synced.subscribe((value) => {
   console.log('synced:', value);
-  queueSave = !value;
 
   if (value) {
-    flushPendingQueue();
     lastSyncTime.set(dayjs());
   }
 });
@@ -78,13 +74,12 @@ export const updateSave = (key, data, isFromRemote) => {
     localModified.set(true);
   }
 
-  if (queueSave && !isFromRemote) {
-    pendingQueue.push({ key, data });
-    return;
+  if (data !== undefined) {
+    localStorage.setItem(key, data);
+  } else {
+    localStorage.removeItem(key);
   }
 
-  localStorage.setItem(key, data);
-
   if (!isFromRemote) {
     const currentTime = dayjs();
     updateTime.set(currentTime);
@@ -102,15 +97,3 @@ export const readSave = (key) => {
   const data = localStorage.getItem(key);
   return data;
 };
-
-export const flushPendingQueue = () => {
-  console.log('flushing save queue');
-  console.log(pendingQueue);
-
-  for (const item of pendingQueue) {
-    updateSave(item.key, item.data);
-  }
-
-  pendingQueue = [];
-  queueSave = false;
-};