diff --git a/src/apis/auth.ts b/src/apis/auth.ts
index c7ac10b..f6a3f5a 100644
--- a/src/apis/auth.ts
+++ b/src/apis/auth.ts
@@ -83,5 +83,6 @@ export const getAccessToken = async () => {
     if (error instanceof Error) {
       console.error(error.message)
     }
+    throw new Error('토큰 재발급 실패')
   }
 }
diff --git a/src/apis/client.ts b/src/apis/client.ts
index d03499a..bbdc756 100644
--- a/src/apis/client.ts
+++ b/src/apis/client.ts
@@ -35,7 +35,7 @@ client.interceptors.response.use(
         return client(originalRequest)
       } catch {
         // 토큰 재발급 실패 시 로그아웃
-        if (window.confirm('토큰 재발급에 실패했습니다. 다시 로그인하시겠습니까?')) {
+        if (window.confirm('오류가 발생했습니다. 다시 로그인하시겠어요?')) {
           useAuthStore.getState().logout()
           window.location.href = '/login'
         }
diff --git a/src/constants/index.ts b/src/constants/index.ts
index c5a15a4..a5092e5 100644
--- a/src/constants/index.ts
+++ b/src/constants/index.ts
@@ -35,7 +35,6 @@ export const WITHDRAW_OPTIONS = [
   '그 외 기타',
 ]
 
-// TODO: 스토리지 변경
 export const MAIN_BACKGROUND_IMAGE_BASE_LINK = 'https://storage.googleapis.com/to-hero/images/'
 
 export const MAIN_BACKGROUND_IMAGE_LINK = [
diff --git a/src/constants/key.ts b/src/constants/key.ts
index f5966f5..fa6d0cd 100644
--- a/src/constants/key.ts
+++ b/src/constants/key.ts
@@ -1,4 +1,4 @@
-export const SHARE_CODE_KEY = 'TH-SC-qa-6'
-export const REFRESH_TOKEN_KEY = 'TH-RT-qa-6'
-export const MEMBER_INFO_KEY = 'TH-MI-qa-6'
-export const GUEST_INFO_KEY = 'TH-GI-qa-6'
+export const SHARE_CODE_KEY = 'TH-SC-qa-7'
+export const REFRESH_TOKEN_KEY = 'TH-RT-qa-7'
+export const MEMBER_INFO_KEY = 'TH-MI-qa-7'
+export const GUEST_INFO_KEY = 'TH-GI-qa-7'
\ No newline at end of file
diff --git a/src/constants/write.ts b/src/constants/write.ts
index 1b929dd..8f4d2ee 100644
--- a/src/constants/write.ts
+++ b/src/constants/write.ts
@@ -1,4 +1,4 @@
-export const MESSAGE_MAX_LENGTH = 100
+export const MESSAGE_MAX_LENGTH = 300
 export const WRITE_STEPS = [
   'select-target',
   'select-hero-type',
diff --git a/src/containers/Share/BuildingWindow.tsx b/src/containers/Share/BuildingWindow.tsx
index 79ed2dc..3b44581 100644
--- a/src/containers/Share/BuildingWindow.tsx
+++ b/src/containers/Share/BuildingWindow.tsx
@@ -7,7 +7,7 @@ interface BuildingWindowProps {
 
 export default function BuildingWindow({ imgSrc, name }: BuildingWindowProps) {
   return (
-    <article className="flex h-[121px] w-fit flex-col justify-between">
+    <article className="relative flex h-[121px] w-fit flex-col items-center justify-between">
       {name !== null ? (
         <>
           <div className="relative h-auto w-[52px]">
@@ -15,7 +15,7 @@ export default function BuildingWindow({ imgSrc, name }: BuildingWindowProps) {
             <BaseWindow className="text-brand-yellow drop-shadow-[0_0_40px_rgba(255,242,0,0.5)]" />
           </div>
           {name && (
-            <p className="label-small relative z-10 overflow-hidden text-ellipsis whitespace-nowrap rounded-full bg-neutral-90 px-2 py-1 text-white">
+            <p className="label-small absolute bottom-0 z-10 overflow-hidden text-ellipsis whitespace-nowrap rounded-full bg-neutral-90 px-2 py-1 text-white">
               {name}
             </p>
           )}
diff --git a/src/layouts/MetaTag.tsx b/src/layouts/MetaTag.tsx
index 1dd4706..3b8057a 100644
--- a/src/layouts/MetaTag.tsx
+++ b/src/layouts/MetaTag.tsx
@@ -3,6 +3,7 @@ import { Helmet } from 'react-helmet-async'
 export default function MetaTag() {
   return (
     <Helmet>
+      <link rel="canonical" href="https://tohero.co.kr" />
       <meta
         name="description"
         content="경찰관, 소방관 분들께 감사의 마음을 전하고 도시를 밝혀주세요"
@@ -20,8 +21,9 @@ export default function MetaTag() {
         content="https://storage.googleapis.com/to-hero/images/site-image.png"
       />
       <meta property="og:url" content="https://tohero.co.kr" />
-      <meta name="twitter:card" content="summary" />
       <meta name="twitter:title" content="To.Hero" />
+      <meta name="twitter:site" content="https://tohero.co.kr" />
+      <meta name="twitter:card" content="summary_large_image" />
       <meta
         name="twitter:description"
         content="경찰관, 소방관 분들께 감사의 마음을 전하고 도시를 밝혀주세요"
diff --git a/src/pages/Main.tsx b/src/pages/Main.tsx
index 36145f7..d964d41 100644
--- a/src/pages/Main.tsx
+++ b/src/pages/Main.tsx
@@ -24,8 +24,14 @@ export default function Main() {
   const location = useLocation()
   useBodyBackgroundColor('#14192F')
 
-  const { data: mainData } = useMainData()
-  const { data, fetchNextPage, hasNextPage, isFetchingNextPage, refetch } = useGetMessages()
+  const { data: mainData, refetch: mainDataRefetch } = useMainData()
+  const {
+    data,
+    fetchNextPage,
+    hasNextPage,
+    isFetchingNextPage,
+    refetch: messagesRefetch,
+  } = useGetMessages()
 
   const messages = data?.pages.flatMap((page) => page.openedLetters ?? []) ?? []
 
@@ -48,7 +54,8 @@ export default function Main() {
 
   useEffect(() => {
     if (location.state && location.state.from === 'write') {
-      refetch()
+      mainDataRefetch()
+      messagesRefetch()
     }
   }, [location])
 
diff --git a/src/utils/extractImgLink.ts b/src/utils/extractImgLink.ts
index e29211c..84e7de3 100644
--- a/src/utils/extractImgLink.ts
+++ b/src/utils/extractImgLink.ts
@@ -15,7 +15,7 @@ export const extractImgLink = (messageCount: number) => {
     imgLink = MAIN_BACKGROUND_IMAGE_LINK[4]
   } else if (messageCount < 750) {
     imgLink = MAIN_BACKGROUND_IMAGE_LINK[5]
-  } else if (messageCount < 999) {
+  } else if (messageCount <= 999) {
     imgLink = MAIN_BACKGROUND_IMAGE_LINK[6]
   } else {
     imgLink = MAIN_BACKGROUND_IMAGE_LINK[7]