diff --git a/src/main/java/org/ntlab/citrusserver/resources/FavoritesRest.java b/src/main/java/org/ntlab/citrusserver/resources/FavoritesRest.java
index 43d30db..396b7dc 100644
--- a/src/main/java/org/ntlab/citrusserver/resources/FavoritesRest.java
+++ b/src/main/java/org/ntlab/citrusserver/resources/FavoritesRest.java
@@ -4,7 +4,10 @@
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
+
+import org.ntlab.citrusserver.entities.Book;
 import org.ntlab.citrusserver.repositories.AccountManager;
+import org.ntlab.citrusserver.repositories.BookManager;
 import org.ntlab.citrusserver.repositories.FavoriteManager;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
@@ -19,29 +22,43 @@
 public class FavoritesRest {
     private final FavoriteManager favoriteManager;
     private final AccountManager accountManager;
+    private final BookManager bookManager;
 
     @Autowired
-    public FavoritesRest(FavoriteManager fm, AccountManager am){
+    public FavoritesRest(FavoriteManager fm, AccountManager am, BookManager bm){
         favoriteManager = fm;
         accountManager = am;
+        bookManager = bm;
     }
 
     @Path("/{account_id}/favorites")
     @GET
     @Produces(MediaType.APPLICATION_JSON)
-    public HashMap<String, HashSet<Integer>> getFavoritesBooks(@PathParam("account_id") String  accountId, @QueryParam("token") String token){
-        if(favoriteManager.getFavorites(accountId) == null){
+    public HashMap<String, HashMap<Integer,Book>> getFavoritesBooks(@PathParam("account_id") String  myAccountId, @QueryParam("token") String token){
+        HashMap<String, HashMap<Integer,Book>> LoverMap = new HashMap<>();
+
+        if(favoriteManager.getFavorites(myAccountId) == null){
             var response = Response.status(Response.Status.NOT_FOUND).entity("アカウントが見つかりません");
             throw new WebApplicationException(response.build());
         }
         else{
-            if(!accountManager.checkToken(accountId, token)) {
+            if(!accountManager.checkToken(myAccountId, token)) {
                 var response = Response.status(Response.Status.FORBIDDEN).entity("認証失敗");
                 throw new WebApplicationException(response.build());
             }
             else{
-                return favoriteManager.getFavorites(accountId);
+                HashMap<String, HashSet<Integer>> accountIdToBooks = favoriteManager.getFavorites(myAccountId);
+                for (String otherAccountId: accountIdToBooks.keySet()) { // いいねした人ごと
+                    HashMap<Integer,Book> bookMap = new HashMap<>(); // 小さいほうのMapの空
+                    HashSet<Integer> books = accountIdToBooks.get(otherAccountId); // いいねした人のValue = 本のIDの一覧
+                    for (Integer bookId : books) { //本のIDの一覧をbookIdで回して、見ていく
+                        Book book = bookManager.getBook(otherAccountId, bookId); // 見ていっている本のIDをBookクラスから取ってくる
+                        bookMap.put(bookId,book); // 小さいMapにキーとValueを追加していってる。bookMap完成
+                    }
+                    LoverMap.put(otherAccountId, bookMap);
+                }
             }
+            return LoverMap;
         }
     }