diff --git a/src/main/java/org/ntlab/tampoposerver/models/Activity.java b/src/main/java/org/ntlab/tampoposerver/models/Activity.java
index efe82b0..207f3df 100644
--- a/src/main/java/org/ntlab/tampoposerver/models/Activity.java
+++ b/src/main/java/org/ntlab/tampoposerver/models/Activity.java
@@ -1,4 +1,47 @@
 package org.ntlab.tampoposerver.models;
 
 public class Activity {
+    private String userId;
+    private String activityId;
+    private String text;
+    private String updateTime;
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void setText(String text) {
+        this.text = text;
+    }
+
+    public String getUpdateTime() {
+        return updateTime;
+    }
+
+    public void setUpdateTime(String updateTime) {
+        this.updateTime = updateTime;
+    }
+
+    public String getActivityId() {
+        return activityId;
+    }
+
+    public void setActivityId(String activityId) {
+        this.activityId = activityId;
+    }
+
+    public Activity(String u, String a, String t, String ut){
+        userId = u;
+        activityId = a;
+        text = t;
+        updateTime = ut;
+    }
 }
diff --git a/src/main/java/org/ntlab/tampoposerver/models/Notification.java b/src/main/java/org/ntlab/tampoposerver/models/Notification.java
index 101b9c9..12994c4 100644
--- a/src/main/java/org/ntlab/tampoposerver/models/Notification.java
+++ b/src/main/java/org/ntlab/tampoposerver/models/Notification.java
@@ -1,4 +1,49 @@
 package org.ntlab.tampoposerver.models;
 
 public class Notification {
+    private String userId;
+    private String notificationId;
+    private String from;
+    private String text;
+    private String time;
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public String getNotificationId() {
+        return notificationId;
+    }
+
+    public void setNotificationId(String notificationId) {
+        this.notificationId = notificationId;
+    }
+
+    public String getFrom() {
+        return from;
+    }
+
+    public void setFrom(String from) {
+        this.from = from;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public void setText(String text) {
+        this.text = text;
+    }
+
+    public String getTime() {
+        return time;
+    }
+
+    public void setTime(String time) {
+        this.time = time;
+    }
 }
diff --git a/src/main/java/org/ntlab/tampoposerver/models/User.java b/src/main/java/org/ntlab/tampoposerver/models/User.java
index b2376f3..82c9a39 100644
--- a/src/main/java/org/ntlab/tampoposerver/models/User.java
+++ b/src/main/java/org/ntlab/tampoposerver/models/User.java
@@ -1,4 +1,67 @@
 package org.ntlab.tampoposerver.models;
 
 public class User {
+    private String userId;
+    private String name;
+    private String password;
+    private String email;
+    private String icon;
+    private String token;
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getIcon() {
+        return icon;
+    }
+
+    public void setIcon(String icon) {
+        this.icon = icon;
+    }
+
+    public String getToken() {
+        return token;
+    }
+
+    public void setToken(String token) {
+        this.token = token;
+    }
+
+    public User(String uid, String n, String pas, String mail, String image){
+        userId = uid;
+        name = n;
+        password = pas;
+        email = mail;
+        icon = image;
+    }
+
 }
diff --git a/src/main/java/org/ntlab/tampoposerver/repositories/FriendRepository.java b/src/main/java/org/ntlab/tampoposerver/repositories/FriendRepository.java
new file mode 100644
index 0000000..91be6d7
--- /dev/null
+++ b/src/main/java/org/ntlab/tampoposerver/repositories/FriendRepository.java
@@ -0,0 +1,51 @@
+package org.ntlab.tampoposerver.repositories;
+
+import org.ntlab.tampoposerver.models.FriendPair;
+import org.springframework.stereotype.Repository;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Repository
+public class FriendRepository {
+    /* フレンドペアのIDからフレンドペアへの写像 */
+    private final Map<Integer, FriendPair> friends = new HashMap<>();
+
+    /* 最後に追加されたフレンドペアのID */
+    private int lastPairId = -1;
+
+    /**
+     * 渡されたIDに紐づけられているフレンドペアを取得する
+     *
+     * @param pairId 取得する対象のフレンドペアのID
+     * @return IDに紐づけられているフレンドペアが存在すればそのペア、存在しなければnull
+     */
+    public FriendPair getFriend(int pairId) {
+        return friends.get(pairId);
+    }
+
+    /**
+     * 渡された二つのユーザーIDから新しいフレンドのペアを作成し追加する
+     *
+     * @param user0Id フレンドとして追加するユーザーのユーザーID
+     * @param user1Id フレンドとして追加するユーザーのユーザーID
+     * @return 新しく作成したフレンドペア
+     */
+    public FriendPair addFriend(String user0Id, String user1Id) {
+        lastPairId++;
+        FriendPair newPair = new FriendPair(lastPairId, user0Id, user1Id);
+        friends.put(newPair.getId(), newPair);
+        return newPair;
+    }
+
+    /**
+     * 渡されたIDに紐づけられているフレンドペアを削除する
+     *
+     * @param pairId 削除する対象のフレンドペアのID
+     * @return 削除できたらtrue、削除できなければfalse
+     */
+    public boolean removeFriend(int pairId) {
+        FriendPair removedPair = friends.remove(pairId);
+        return removedPair != null;
+    }
+}
diff --git a/src/main/java/org/ntlab/tampoposerver/repositories/FriendRequestRepository.java b/src/main/java/org/ntlab/tampoposerver/repositories/FriendRequestRepository.java
new file mode 100644
index 0000000..61cb942
--- /dev/null
+++ b/src/main/java/org/ntlab/tampoposerver/repositories/FriendRequestRepository.java
@@ -0,0 +1,50 @@
+package org.ntlab.tampoposerver.repositories;
+
+import org.ntlab.tampoposerver.models.FriendRequest;
+import org.springframework.stereotype.Repository;
+
+import java.util.Collection;
+import java.util.HashMap;
+
+@Repository
+public class FriendRequestRepository {
+    /* フレンドリクエストのIDからフレンドリクエストへの写像 */
+    private final HashMap<Integer, FriendRequest> friendRequests = new HashMap<>();
+
+    /* 最後に追加されたフレンドリクエストのID */
+    private int lastId = -1;
+
+    /**
+     * すべてのフレンドリクエストを返す
+     *
+     * @return すべてのフレンドリクエスト
+     */
+    public Collection<FriendRequest> getFriendRequests() {
+        return friendRequests.values();
+    }
+
+    /**
+     * 渡された二つのユーザーIDから新しいフレンドリクエストを作成し追加する
+     *
+     * @param senderId   フレンドリクエストを送ったユーザーのユーザーID
+     * @param receiverId フレンドリクエストを受け取ったユーザーのユーザーID
+     * @return 新しく作成したフレンドリクエスト
+     */
+    public FriendRequest addFriendRequest(String senderId, String receiverId) {
+        lastId++;
+        FriendRequest newRequest = new FriendRequest(lastId, senderId, receiverId);
+        friendRequests.put(newRequest.getId(), newRequest);
+        return newRequest;
+    }
+
+    /**
+     * 渡されたIDに紐づけられているフレンドリクエストを削除する
+     *
+     * @param id 削除する対象のフレンドリクエストのID
+     * @return 削除できたらtrue、削除できなければfalse
+     */
+    public boolean removeFriendRequest(int id) {
+        FriendRequest removedRequest = friendRequests.remove(id);
+        return removedRequest != null;
+    }
+}
diff --git a/src/main/java/org/ntlab/tampoposerver/repositories/NotificationRepository.java b/src/main/java/org/ntlab/tampoposerver/repositories/NotificationRepository.java
index 7509ae4..bbaadfd 100644
--- a/src/main/java/org/ntlab/tampoposerver/repositories/NotificationRepository.java
+++ b/src/main/java/org/ntlab/tampoposerver/repositories/NotificationRepository.java
@@ -1,7 +1,19 @@
 package org.ntlab.tampoposerver.repositories;
 
+import org.ntlab.tampoposerver.models.Notification;
 import org.springframework.stereotype.Repository;
 
+import java.util.HashMap;
+
 @Repository
 public class NotificationRepository {
+    private HashMap<String, HashMap<String, Notification>> notificationMap = new HashMap<>();
+
+    public NotificationRepository() {
+        Notification n1 = new Notification();
+        notificationMap.put("uid01", new HashMap<>());
+        notificationMap.get("uid01").put("nid01", n1);
+
+        Notification result = notificationMap.get("uid01").get("nid01");
+    }
 }
diff --git a/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java b/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java
index da39cd1..6c9115a 100644
--- a/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java
+++ b/src/main/java/org/ntlab/tampoposerver/repositories/UserRepository.java
@@ -1,7 +1,22 @@
 package org.ntlab.tampoposerver.repositories;
 
+import org.ntlab.tampoposerver.models.User;
 import org.springframework.stereotype.Repository;
 
+import java.util.HashMap;
+
 @Repository
 public class UserRepository {
+    private final HashMap<String, User> userMap = new HashMap<>();
+    public User addUser(String uid,String n,String pas,String mail,String image) {
+        User u = new User(uid,n,pas,mail,image);
+        userMap.put(uid,u);
+        return u;
+    }
+    public  User getUser(String uid) {
+        return userMap.get(uid);
+    }
+    public User deleteUser(String uid) {
+        return userMap.remove(uid);
+    }
 }
diff --git a/src/main/java/org/ntlab/tampoposerver/resources/ActivitiesResource.java b/src/main/java/org/ntlab/tampoposerver/resources/ActivitiesResource.java
index b6041cc..8edefdb 100644
--- a/src/main/java/org/ntlab/tampoposerver/resources/ActivitiesResource.java
+++ b/src/main/java/org/ntlab/tampoposerver/resources/ActivitiesResource.java
@@ -2,14 +2,39 @@
 
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.QueryParam;
 import org.springframework.stereotype.Component;
 
 @Path("/users")
 @Component
 
 public class ActivitiesResource {
+    @Path("/{user-id}/activities")
     @GET
-    public String getHello() {
+    public String getActivities(@PathParam("user-id") String userId, @QueryParam("filter") String filter) {
+        return "Hello World!!";
+    }
+
+    @Path("/{user-id}/activities/{activity-id}")
+    @GET
+    public String getActivity(@PathParam("user-id") String userId, @PathParam("activity-id") String activityId) {
+        return "Hello World!!";
+    }
+
+    @Path("/{user-id}/activities/{activity-id}/text")
+    @GET
+    public String getActivityText(@PathParam("user-id") String userId, @PathParam("activity-id") String activityId) {
+        return "Hello World!!";
+    }
+    @Path("/{user-id}/activities/{activity-id}/updated-time")
+    @GET
+    public String getActivityUpdatedTime(@PathParam("user-id") String userId, @PathParam("activity-id") String activityId) {
+        return "Hello World!!";
+    }
+    @Path("/{user-id}/activities/{activity-id}/last-updated-time")
+    @GET
+    public String getActivityLastUpdatedTime(@PathParam("user-id") String userId) {
         return "Hello World!!";
     }
 }
\ No newline at end of file
diff --git a/src/main/java/org/ntlab/tampoposerver/resources/FriendRequestsResource.java b/src/main/java/org/ntlab/tampoposerver/resources/FriendRequestsResource.java
index 585a4ed..678c967 100644
--- a/src/main/java/org/ntlab/tampoposerver/resources/FriendRequestsResource.java
+++ b/src/main/java/org/ntlab/tampoposerver/resources/FriendRequestsResource.java
@@ -2,13 +2,14 @@
 
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.Path;
+import jakarta.ws.rs.QueryParam;
 import org.springframework.stereotype.Component;
 
 @Path("/friend-requests")
 @Component
 public class FriendRequestsResource {
     @GET
-    public String getHello(){
+    public String getfriendrequests(@QueryParam("token") String token){
         return "Hello World!";
     }
 }
diff --git a/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java b/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java
index 03d2c94..df7ee74 100644
--- a/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java
+++ b/src/main/java/org/ntlab/tampoposerver/resources/FriendsResource.java
@@ -2,13 +2,16 @@
 
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.QueryParam;
 import org.springframework.stereotype.Component;
 
 @Path("/friends")
 @Component
 public class FriendsResource {
+    @Path("/{pair-id}")
     @GET
-    public String getHello() {
+    public String getFriends(@QueryParam("token") String token, @PathParam("pair-id") String pairId) {
         return "Hello World!!";
     }
 
diff --git a/src/test/java/org/ntlab/tampoposerver/models/UserTest.java b/src/test/java/org/ntlab/tampoposerver/models/UserTest.java
new file mode 100644
index 0000000..d77a8fc
--- /dev/null
+++ b/src/test/java/org/ntlab/tampoposerver/models/UserTest.java
@@ -0,0 +1,21 @@
+package org.ntlab.tampoposerver.models;
+
+import jakarta.validation.constraints.AssertTrue;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@SpringBootTest
+public class UserTest {
+    @Test
+    void contextLoads() {
+        User u1 = new User("u01", "asdf", "xyz","asdf@gmail.com","123a876bca878de3");
+        User u2 = new User("u02", "zcv", "abc","dfgdf@gmail.com","123a876bca878d125");
+        assertEquals("asdf", u1.getName());
+        assertEquals("xyz", u1.getPassword());
+        assertEquals("asdf@gmail.com", u1.getEmail());
+        assertEquals("zcv", u2.getName());
+        assertEquals("abc", u2.getPassword());
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java b/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java
new file mode 100644
index 0000000..c143e92
--- /dev/null
+++ b/src/test/java/org/ntlab/tampoposerver/repositories/UserRepositoryTest.java
@@ -0,0 +1,23 @@
+package org.ntlab.tampoposerver.repositories;
+
+import org.junit.jupiter.api.Test;
+import org.ntlab.tampoposerver.models.User;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@SpringBootTest
+public class UserRepositoryTest {
+    @Test
+    void contextLoads() {
+        UserRepository userRepository = new UserRepository();
+        User u1 = userRepository.addUser("u01", "asdf", "xyz","asdf@gmail.com","123a876bca878de3");
+        User u2 = userRepository.addUser("u02", "zcv", "abc","dfgdf@gmail.com","123a876bca878d125");
+        User u = userRepository.getUser("u02");
+        assertEquals(u2, u);
+        assertNotEquals(u1, u);
+        userRepository.deleteUser("u02");
+        u = userRepository.getUser("u02");
+        assertNull(u);
+    }
+}
\ No newline at end of file