diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/application/instance/GetLocalInstanceApplicationService.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/application/instance/GetLocalInstanceApplicationService.kt
index b96b7e06..557737ed 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/application/instance/GetLocalInstanceApplicationService.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/application/instance/GetLocalInstanceApplicationService.kt
@@ -19,7 +19,7 @@ class GetLocalInstanceApplicationService(
         transaction,
         logger
     ) {
-    var cachedInstance: Instance? = null
+    private var cachedInstance: Instance? = null
 
     override suspend fun internalExecute(command: Unit, principal: Principal): Instance {
         if (cachedInstance != null) {
@@ -28,9 +28,9 @@ class GetLocalInstanceApplicationService(
         }
 
         val instance = (
-            instanceRepository.findByUrl(applicationConfig.url.toURI())
-                ?: throw InternalServerException("Local instance not found.")
-            )
+                instanceRepository.findByUrl(applicationConfig.url.toURI())
+                    ?: throw InternalServerException("Local instance not found.")
+                )
 
         cachedInstance = Instance.of(instance)
         @Suppress("UnsafeCallOnNullableType")
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/api/auth/AuthController.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/web/auth/AuthController.kt
similarity index 80%
rename from hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/api/auth/AuthController.kt
rename to hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/web/auth/AuthController.kt
index b19f3c4a..9b0d297b 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/api/auth/AuthController.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/web/auth/AuthController.kt
@@ -14,13 +14,15 @@
  * limitations under the License.
  */
 
-package dev.usbharu.hideout.core.interfaces.api.auth
+package dev.usbharu.hideout.core.interfaces.web.auth
 
 import dev.usbharu.hideout.core.application.actor.RegisterLocalActor
 import dev.usbharu.hideout.core.application.actor.RegisterLocalActorApplicationService
+import dev.usbharu.hideout.core.application.instance.GetLocalInstanceApplicationService
 import dev.usbharu.hideout.core.domain.model.support.principal.Anonymous
 import jakarta.servlet.http.HttpServletRequest
 import org.springframework.stereotype.Controller
+import org.springframework.ui.Model
 import org.springframework.validation.annotation.Validated
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.ModelAttribute
@@ -29,10 +31,14 @@ import org.springframework.web.bind.annotation.PostMapping
 @Controller
 class AuthController(
     private val registerLocalActorApplicationService: RegisterLocalActorApplicationService,
+    private val getLocalInstanceApplicationService: GetLocalInstanceApplicationService,
 ) {
     @GetMapping("/auth/sign_up")
     @Suppress("FunctionOnlyReturningConstant")
-    fun signUp(): String = "sign_up"
+    suspend fun signUp(model: Model): String {
+        model.addAttribute("instance", getLocalInstanceApplicationService.execute(Unit, Anonymous))
+        return "sign_up"
+    }
 
     @PostMapping("/auth/sign_up")
     suspend fun signUp(@Validated @ModelAttribute signUpForm: SignUpForm, request: HttpServletRequest): String {
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/api/auth/SignUpForm.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/web/auth/SignUpForm.kt
similarity index 68%
rename from hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/api/auth/SignUpForm.kt
rename to hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/web/auth/SignUpForm.kt
index d70eb9c2..320187d8 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/api/auth/SignUpForm.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/interfaces/web/auth/SignUpForm.kt
@@ -1,4 +1,4 @@
-package dev.usbharu.hideout.core.interfaces.api.auth
+package dev.usbharu.hideout.core.interfaces.web.auth
 
 data class SignUpForm(
     val username: String,
diff --git a/hideout-core/src/main/resources/messages/hideout-web-messages.properties b/hideout-core/src/main/resources/messages/hideout-web-messages.properties
index c22c2992..6a47f1b5 100644
--- a/hideout-core/src/main/resources/messages/hideout-web-messages.properties
+++ b/hideout-core/src/main/resources/messages/hideout-web-messages.properties
@@ -1,3 +1,6 @@
+auth-signUp.password=\u30D1\u30B9\u30EF\u30FC\u30C9
+auth-signUp.register=\u767B\u9332\u3059\u308B
+auth-signUp.username=\u30E6\u30FC\u30B6\u30FC\u540D
 common.audio=\u30AA\u30FC\u30C7\u30A3\u30AA
 common.audio-download-link=\u97F3\u58F0\u30D5\u30A1\u30A4\u30EB\u3092\u30C0\u30A6\u30F3\u30ED\u30FC\u30C9
 common.empty=\u8868\u793A\u3059\u308B\u3082\u306E\u304C\u3042\u308A\u307E\u305B\u3093
diff --git a/hideout-core/src/main/resources/messages/hideout-web-messages_en_US.properties b/hideout-core/src/main/resources/messages/hideout-web-messages_en_US.properties
index f32efecd..f85b5d8a 100644
--- a/hideout-core/src/main/resources/messages/hideout-web-messages_en_US.properties
+++ b/hideout-core/src/main/resources/messages/hideout-web-messages_en_US.properties
@@ -1,3 +1,6 @@
+auth-signUp.password=Password
+auth-signUp.register=Register Account
+auth-signUp.username=Username
 common.audio=Audio
 common.audio-download-link=Download the audio.
 common.empty=Empty
diff --git a/hideout-core/src/main/resources/messages/hideout-web-messages_ja_JP.properties b/hideout-core/src/main/resources/messages/hideout-web-messages_ja_JP.properties
index c22c2992..6a47f1b5 100644
--- a/hideout-core/src/main/resources/messages/hideout-web-messages_ja_JP.properties
+++ b/hideout-core/src/main/resources/messages/hideout-web-messages_ja_JP.properties
@@ -1,3 +1,6 @@
+auth-signUp.password=\u30D1\u30B9\u30EF\u30FC\u30C9
+auth-signUp.register=\u767B\u9332\u3059\u308B
+auth-signUp.username=\u30E6\u30FC\u30B6\u30FC\u540D
 common.audio=\u30AA\u30FC\u30C7\u30A3\u30AA
 common.audio-download-link=\u97F3\u58F0\u30D5\u30A1\u30A4\u30EB\u3092\u30C0\u30A6\u30F3\u30ED\u30FC\u30C9
 common.empty=\u8868\u793A\u3059\u308B\u3082\u306E\u304C\u3042\u308A\u307E\u305B\u3093
diff --git a/hideout-core/src/main/resources/templates/sign_up.html b/hideout-core/src/main/resources/templates/sign_up.html
index 63f57c5a..52d7abdd 100644
--- a/hideout-core/src/main/resources/templates/sign_up.html
+++ b/hideout-core/src/main/resources/templates/sign_up.html
@@ -2,13 +2,21 @@
 <html lang="ja" xmlns:th="http://www.thymeleaf.org">
 <head>
     <meta charset="UTF-8">
-    <title>SignUp</title>
+    <title th:text="#{auth-signUp.register}">Register Account</title>
+    <meta property="og:url" th:content="${instance.url + '/auth/sign_up'}">
+    <meta property="og:title" th:content="#{auth-signUp.register}">
 </head>
 <body>
 
 <form method='post' th:action="@{/auth/sign_up}">
-    <input name='username' type='text' value=''>
-    <input name='password' type='password'>
+    <div>
+        <label for="signUp-form-username" th:text="#{auth-signUp.username}">Username</label>
+        <input id="signUp-form-username" name='username' type='text' value=''>
+    </div>
+    <div>
+        <label for="signUp-form-password" th:text="#{auth-signUp.password}">Password</label>
+        <input id="signUp-form-password" name='password' type='password'>
+    </div>
     <input type="submit">
 </form>
 </body>