diff --git a/.mvn/jvm.config b/.mvn/jvm.config
new file mode 100644
index 0000000..156bfdf
--- /dev/null
+++ b/.mvn/jvm.config
@@ -0,0 +1,4 @@
+-Dhttp.proxyHost=oskproxy.intra.tis.co.jp
+-Dhttp.proxyPort=8080
+-Dhttps.proxyHost=oskproxy.intra.tis.co.jp
+-Dhttps.proxyPort=8080
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/DemoApplication.java b/src/main/java/com/example/demo/DemoApplication.java
deleted file mode 100644
index 3f3d9f6..0000000
--- a/src/main/java/com/example/demo/DemoApplication.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.example.demo;
-
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@SpringBootApplication
-public class DemoApplication {
-
-	public static void main(String[] args) {
-		SpringApplication.run(DemoApplication.class, args);
-	}
-
-}
-
diff --git a/src/main/java/com/example/message/Message.java b/src/main/java/com/example/message/Message.java
new file mode 100644
index 0000000..1cf43c9
--- /dev/null
+++ b/src/main/java/com/example/message/Message.java
@@ -0,0 +1,14 @@
+package com.example.message;
+
+import org.seasar.doma.Entity;
+import org.seasar.doma.GeneratedValue;
+import org.seasar.doma.GenerationType;
+import org.seasar.doma.Id;
+
+@Entity
+public class Message {
+	@Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+	public long id;
+    public String content;
+}
diff --git a/src/main/java/com/example/message/MessageApplication.java b/src/main/java/com/example/message/MessageApplication.java
new file mode 100644
index 0000000..de42c9a
--- /dev/null
+++ b/src/main/java/com/example/message/MessageApplication.java
@@ -0,0 +1,56 @@
+package com.example.message;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@SpringBootApplication
+@RestController
+@RequestMapping("/message")
+public class MessageApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(MessageApplication.class, args);
+	}
+
+	@Autowired
+	MessageDao messageDao;
+
+	@GetMapping("/")
+	List<Message> all() {
+		return messageDao.selectAll();
+	}
+
+	@GetMapping("/{id}")
+	Message select(@PathVariable("id") int id) {
+		return messageDao.selectById(id);
+	}
+
+	@PostMapping("/register")
+	void insert(@RequestParam String content) {
+		Message message = new Message();
+		message.content = content;
+		messageDao.insert(message);
+	}
+
+	@PostMapping("/delete")
+	void delete(@RequestParam int id) {
+		Message message = messageDao.selectById(id);
+		messageDao.delete(message);
+	}
+
+	@PostMapping("/update/{id}")
+	void update(@PathVariable int id, @RequestParam String content) {
+		Message message = messageDao.selectById(id);
+		message.content = content;
+		messageDao.update(message);
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/message/MessageDao.java b/src/main/java/com/example/message/MessageDao.java
new file mode 100644
index 0000000..34b10f5
--- /dev/null
+++ b/src/main/java/com/example/message/MessageDao.java
@@ -0,0 +1,31 @@
+package com.example.message;
+
+import java.util.List;
+
+import org.seasar.doma.Dao;
+import org.seasar.doma.Delete;
+import org.seasar.doma.Insert;
+import org.seasar.doma.Select;
+import org.seasar.doma.Update;
+import org.seasar.doma.boot.ConfigAutowireable;
+import org.springframework.transaction.annotation.Transactional;
+
+@ConfigAutowireable
+@Dao
+public interface MessageDao {
+	@Select
+	List<Message> selectAll();
+
+	@Insert
+	@Transactional
+	int insert(Message message);
+
+	@Select
+	Message selectById(int id);
+
+	@Delete
+	int delete(Message message);
+
+	@Update
+	int update(Message message);
+}
\ No newline at end of file
diff --git a/src/main/resources/META-INF/com/example/message/MessageDao/selectAll.sql b/src/main/resources/META-INF/com/example/message/MessageDao/selectAll.sql
new file mode 100644
index 0000000..59c52cd
--- /dev/null
+++ b/src/main/resources/META-INF/com/example/message/MessageDao/selectAll.sql
@@ -0,0 +1,5 @@
+SELECT
+  id,
+  content
+FROM message
+ORDER BY id ASC
\ No newline at end of file
diff --git a/src/main/resources/META-INF/com/example/message/MessageDao/selectById.sql b/src/main/resources/META-INF/com/example/message/MessageDao/selectById.sql
new file mode 100644
index 0000000..345fba7
--- /dev/null
+++ b/src/main/resources/META-INF/com/example/message/MessageDao/selectById.sql
@@ -0,0 +1 @@
+SELECT id,content FROM message WHERE id = /* id */0
\ No newline at end of file
diff --git a/src/main/resources/db/migration/V1.2__Create_messages_table.sql b/src/main/resources/db/migration/V1.2__Create_messages_table.sql
new file mode 100644
index 0000000..d7da745
--- /dev/null
+++ b/src/main/resources/db/migration/V1.2__Create_messages_table.sql
@@ -0,0 +1,5 @@
+CREATE TABLE message (
+  id serial ,
+  content VARCHAR(100),
+  CONSTRAINT "PK" PRIMARY KEY (id)
+);
\ No newline at end of file