diff --git a/app/src/main/java/com/example/tampopo_client/views/LaunchActivity.java b/app/src/main/java/com/example/tampopo_client/views/LaunchActivity.java
index 3c966e0..d36fa48 100644
--- a/app/src/main/java/com/example/tampopo_client/views/LaunchActivity.java
+++ b/app/src/main/java/com/example/tampopo_client/views/LaunchActivity.java
@@ -25,7 +25,7 @@
             v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
             return insets;
         });
-        Button button_register = (Button) findViewById(R.id.Registerbutton);
+        Button button_register = (Button) findViewById(R.id.Newregistationbutton);
         button_register.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
@@ -33,5 +33,13 @@
                 startActivity(intent);
             }
         });
+        button_register = (Button) findViewById(R.id.Loginbutton);
+        button_register.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(LaunchActivity.this,LoginActivity.class);
+                startActivity(intent);
+            }
+        });
     }
 }
diff --git a/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java b/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java
index 16cf924..4ba2800 100644
--- a/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java
+++ b/app/src/main/java/com/example/tampopo_client/views/RegisterActivity.java
@@ -1,6 +1,9 @@
 package com.example.tampopo_client.views;
 
+import android.content.Intent;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
 
 import androidx.activity.EdgeToEdge;
 import androidx.appcompat.app.AppCompatActivity;
@@ -22,5 +25,21 @@
             v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
             return insets;
         });
+        Button button_register = (Button) findViewById(R.id.Registerbutton);
+        button_register.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(RegisterActivity.this,LoginActivity.class);
+                startActivity(intent);
+            }
+        });
+        button_register = (Button) findViewById(R.id.Loginbutton2);
+        button_register.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(RegisterActivity.this,LoginActivity.class);
+                startActivity(intent);
+            }
+        });
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_launch.xml b/app/src/main/res/layout/activity_launch.xml
index e11fd8c..7ccbd4b 100644
--- a/app/src/main/res/layout/activity_launch.xml
+++ b/app/src/main/res/layout/activity_launch.xml
@@ -13,7 +13,7 @@
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="tampopo"
-      android:textSize="25dp"
+      android:textSize="45dp"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintEnd_toEndOf="parent"
       app:layout_constraintHorizontal_bias="0.498"
@@ -22,22 +22,24 @@
       app:layout_constraintVertical_bias="0.276" />
 
   <Button
-      android:id="@+id/Registerbutton"
-      android:layout_width="284dp"
-      android:layout_height="53dp"
+      android:id="@+id/Newregistationbutton"
+      android:layout_width="300dp"
+      android:layout_height="70dp"
       android:text="新規登録"
+      android:textSize="20dp"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintEnd_toEndOf="parent"
-      app:layout_constraintHorizontal_bias="0.498"
+      app:layout_constraintHorizontal_bias="0.495"
       app:layout_constraintStart_toStartOf="parent"
       app:layout_constraintTop_toTopOf="parent"
-      app:layout_constraintVertical_bias="0.727" />
+      app:layout_constraintVertical_bias="0.692" />
 
   <Button
       android:id="@+id/Loginbutton"
-      android:layout_width="279dp"
-      android:layout_height="53dp"
+      android:layout_width="300dp"
+      android:layout_height="70dp"
       android:text="ログイン"
+      android:textSize="20dp"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintEnd_toEndOf="parent"
       app:layout_constraintHorizontal_bias="0.498"
diff --git a/app/src/main/res/layout/activity_register.xml b/app/src/main/res/layout/activity_register.xml
index 4259034..8f9b549 100644
--- a/app/src/main/res/layout/activity_register.xml
+++ b/app/src/main/res/layout/activity_register.xml
@@ -12,7 +12,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="新規登録"
-        android:textSize="20dp"
+        android:textSize="30dp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.498"
@@ -20,25 +20,41 @@
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintVertical_bias="0.19" />
 
-<!--    <EditText-->
-<!--        android:id="@+id/editTextPassword"-->
-<!--        android:layout_width="229dp"-->
-<!--        android:layout_height="45dp"-->
-<!--        android:ems="10"-->
-<!--        android:hint="パスワードを入力してください"-->
-<!--        android:inputType="textPassword"-->
-<!--        android:textSize="15dp"-->
-<!--        app:layout_constraintBottom_toBottomOf="parent"-->
-<!--        app:layout_constraintEnd_toEndOf="parent"-->
-<!--        app:layout_constraintStart_toStartOf="parent"-->
-<!--        app:layout_constraintTop_toTopOf="parent"-->
-<!--        app:layout_constraintVertical_bias="0.481" />-->
+    <EditText
+        android:id="@+id/editTextuserId"
+        android:layout_width="300dp"
+        android:layout_height="48dp"
+        android:ems="10"
+        android:hint="IDを入力してください"
+        android:inputType="text"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.495"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.351" />
+
+    <EditText
+        android:id="@+id/editTextPassword"
+        android:layout_width="300dp"
+        android:layout_height="48dp"
+        android:ems="10"
+        android:hint="パスワードを入力してください"
+        android:inputType="textPassword"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.481" />
 
     <Button
-        android:id="@+id/Registerbutton2"
+        android:id="@+id/Registerbutton"
         android:layout_width="300dp"
-        android:layout_height="47dp"
+        android:layout_height="70dp"
         android:text="登録"
+        android:textSize="20sp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.498"
@@ -51,10 +67,31 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="すでにアカウントをお持ちの方は"
+        android:textSize="18sp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.291"
+        app:layout_constraintHorizontal_bias="0.274"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.753" />
+        app:layout_constraintVertical_bias="0.788" />
+
+    <Button
+        android:id="@+id/Loginbutton2"
+        android:layout_width="62dp"
+        android:layout_height="48dp"
+        android:background="@android:color/transparent"
+        android:minWidth="0dp"
+        android:minHeight="0dp"
+        android:padding="0dp"
+        android:text="こちら"
+        android:textColor="#000000"
+        android:textSize="18sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.882"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.797" />
+
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file