diff --git a/.idea/misc.xml b/.idea/misc.xml
index 9f71c83..773fe0f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
diff --git a/app/build.gradle b/app/build.gradle
index 7c8f3cd..355e8e5 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,5 +1,6 @@
 plugins {
     id 'com.android.application'
+    id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
 }
 
 android {
@@ -26,6 +27,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
@@ -33,6 +37,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'com.google.android.gms:play-services-maps:18.2.0'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f1bbbad..cd84870 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -12,6 +12,22 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Oplogy"
         tools:targetApi="31">
+
+        <!--
+             TODO: Before you run your application, you need a Google Maps API key.
+
+             To get one, follow the directions here:
+
+                https://developers.google.com/maps/documentation/android-sdk/get-api-key
+
+             Once you have your API key (it starts with "AIza"), define a new property in your
+             project's local.properties file (e.g. MAPS_API_KEY=Aiza...), and replace the
+             "YOUR_API_KEY" string in this file with "${MAPS_API_KEY}".
+        -->
+        <meta-data
+            android:name="com.google.android.geo.API_KEY"
+            android:value="YOUR_API_KEY" />
+
         <activity
             android:name=".MainActivity"
             android:exported="true">
diff --git a/app/src/main/java/com/example/oplogy/MainActivity.java b/app/src/main/java/com/example/oplogy/MainActivity.java
index bd15cb6..31cbba2 100644
--- a/app/src/main/java/com/example/oplogy/MainActivity.java
+++ b/app/src/main/java/com/example/oplogy/MainActivity.java
@@ -3,6 +3,8 @@ package com.example.oplogy;
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.os.Bundle;
+import android.widget.Button;
+import android.widget.EditText;
 import android.widget.TextView;
 
 public class MainActivity extends AppCompatActivity {
@@ -12,6 +14,9 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        TextView textMain = findViewById(R.id.TextMain);
+        EditText textMain = findViewById(R.id.TextMain);
+        Button buttonStart = (Button) findViewById(R.id.buttonStart);
+
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/oplogy/MapsActivity.java b/app/src/main/java/com/example/oplogy/MapsActivity.java
new file mode 100644
index 0000000..72ca1ba
--- /dev/null
+++ b/app/src/main/java/com/example/oplogy/MapsActivity.java
@@ -0,0 +1,51 @@
+package com.example.oplogy;
+
+import androidx.fragment.app.FragmentActivity;
+
+import android.os.Bundle;
+
+import com.google.android.gms.maps.CameraUpdateFactory;
+import com.google.android.gms.maps.GoogleMap;
+import com.google.android.gms.maps.OnMapReadyCallback;
+import com.google.android.gms.maps.SupportMapFragment;
+import com.google.android.gms.maps.model.LatLng;
+import com.google.android.gms.maps.model.MarkerOptions;
+import com.example.oplogy.databinding.ActivityMapsBinding;
+
+public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
+
+    private GoogleMap mMap;
+    private ActivityMapsBinding binding;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityMapsBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
+        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
+                .findFragmentById(R.id.map);
+        mapFragment.getMapAsync(this);
+    }
+
+    /**
+     * Manipulates the map once available.
+     * This callback is triggered when the map is ready to be used.
+     * This is where we can add markers or lines, add listeners or move the camera. In this case,
+     * we just add a marker near Sydney, Australia.
+     * If Google Play services is not installed on the device, the user will be prompted to install
+     * it inside the SupportMapFragment. This method will only be triggered once the user has
+     * installed Google Play services and returned to the app.
+     */
+    @Override
+    public void onMapReady(GoogleMap googleMap) {
+        mMap = googleMap;
+
+        // Add a marker in Sydney and move the camera
+        LatLng sydney = new LatLng(-34, 151);
+        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
+        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index e0b0c82..567d4e7 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -12,16 +12,17 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"/>
 
-    <TextView
+    <EditText
         android:id="@+id/TextMain"
-        android:textColor="@color/material_on_background_disabled"
+        android:hint="開始を押してください"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="100dp"
-        android:text="PracticeTeam"
+        android:text=""
         android:layout_gravity="center"
-        android:textSize="50dp"/>
+        android:textSize="30dp"/>
     <Button
+        android:id="@+id/buttonStart"
         android:layout_marginTop="300dp"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
diff --git a/app/src/main/res/layout/activity_maps.xml b/app/src/main/res/layout/activity_maps.xml
new file mode 100644
index 0000000..ec352fc
--- /dev/null
+++ b/app/src/main/res/layout/activity_maps.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<fragment xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:map="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/map"
+    android:name="com.google.android.gms.maps.SupportMapFragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MapsActivity" />
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 55922e8..8b47d1d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">oplogy</string>
+    <string name="title_activity_maps">MapsActivity</string>
 </resources>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index a100ce0..601cbe8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,4 +2,5 @@
 plugins {
     id 'com.android.application' version '8.0.2' apply false
     id 'com.android.library' version '8.0.2' apply false
+    id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin' version '2.0.1' apply false
 }
\ No newline at end of file