diff --git a/src/components/ui/Main.tsx b/src/components/ui/Main.tsx
index 098d3c6..7f61801 100644
--- a/src/components/ui/Main.tsx
+++ b/src/components/ui/Main.tsx
@@ -49,8 +49,8 @@ export default function Main() {
               <button className="main-bx-arr" onClick={() => router.push('/inquiry/list?isMyInquiry=false')}></button>
             </div>
             <div className="grid-bx-body">
-              <div className="grid-bx-body-tit">1:1お問い合わせ リスト</div>
-              <div className="grid-bx-body-txt">作成問い合わせの確認</div>
+              <div className="grid-bx-body-tit">お問い合わせ一覧</div>
+              <div className="grid-bx-body-txt">作成お問い合わせの確認</div>
             </div>
           </div>
           <div className="main-grid-bx bx04">
@@ -61,7 +61,7 @@ export default function Main() {
               <button className="main-bx-arr" onClick={() => router.push('/inquiry/regist')}></button>
             </div>
             <div className="grid-bx-body">
-              <div className="grid-bx-body-tit">1:1問い合わせ登録</div>
+              <div className="grid-bx-body-tit">お問い合わせ登録</div>
               <div className="grid-bx-body-txt">新規お問い合わせの 作成</div>
             </div>
           </div>
diff --git a/src/components/ui/common/Header.tsx b/src/components/ui/common/Header.tsx
index 8f0301d..6a4c1e2 100644
--- a/src/components/ui/common/Header.tsx
+++ b/src/components/ui/common/Header.tsx
@@ -106,7 +106,7 @@ export default function Header() {
                   <SwiperSlide>
                     <div className="side-swiper-card" onClick={() => router.push('/suitable')}>
                       <div className="side-swiper-icon icon01"></div>
-                      <div className="side-swiper-infor">私は作成したお問 い合わせ</div>
+                      <div className="side-swiper-infor">屋根材適合性の確認</div>
                     </div>
                   </SwiperSlide>
                 </Swiper>
@@ -114,16 +114,22 @@ export default function Header() {
               <nav className="side-nav-wrap">
                 <ul className="side-nav-list">
                   <li className="side-nav-item">
-                    <button onClick={() => {router.push('/survey-sale?isMySurvey=false')}}>調査物件一覧</button>
+                    <button
+                      onClick={() => {
+                        router.push('/survey-sale?isMySurvey=false')
+                      }}
+                    >
+                      調査物件一覧
+                    </button>
                   </li>
                   <li className="side-nav-item">
                     <button onClick={() => router.push('/survey-sale/regist')}>調査物件登録</button>
                   </li>
                   <li className="side-nav-item">
-                    <button onClick={() => router.push('/inquiry/list?isMyInquiry=false')}>1:1お問い合わせ</button>
+                    <button onClick={() => router.push('/inquiry/list?isMyInquiry=false')}>お問い合わせ</button>
                   </li>
                   <li className="side-nav-item">
-                    <button onClick={() => router.push('/inquiry/regist')}>1:1お問い合わせ登録</button>
+                    <button onClick={() => router.push('/inquiry/regist')}>お問い合わせ登録</button>
                   </li>
                   {session.role !== 'Partner' && (
                     <li className="side-nav-item">
diff --git a/src/hooks/useTitle.ts b/src/hooks/useTitle.ts
index f738e7f..63adc5e 100644
--- a/src/hooks/useTitle.ts
+++ b/src/hooks/useTitle.ts
@@ -6,7 +6,7 @@ export const useTitle = () => {
     }
 
     if (pathname.startsWith('/inquiry/') && pathname !== '/inquiry/list' && pathname !== '/inquiry/regist') {
-      return '1:1お問い合わせ詳細'
+      return 'お問い合わせ詳細'
     }
 
     // Handle static routes
@@ -20,9 +20,9 @@ export const useTitle = () => {
       case '/survey-sale/regist':
         return '調査物件登録'
       case '/inquiry/list':
-        return '1:1お問い合わせ'
+        return 'お問い合わせ'
       case '/inquiry/regist':
-        return '1:1お問い合わせ'
+        return 'お問い合わせ登録'
       case '/pw-reset':
         return 'パスワードリセット'