diff --git a/src/main/java/com/LabWork/app/MangaStore/model/Default/Reader.java b/src/main/java/com/LabWork/app/MangaStore/model/Default/Reader.java
index bd216ab..2e10a77 100644
--- a/src/main/java/com/LabWork/app/MangaStore/model/Default/Reader.java
+++ b/src/main/java/com/LabWork/app/MangaStore/model/Default/Reader.java
@@ -18,7 +18,7 @@ public class Reader {
     @Column
     private String hashedPassword;
 
-    @ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.MERGE)
+    @ManyToMany(fetch = FetchType.EAGER)
     private List<Manga> mangas;
 
     public Reader() {
diff --git a/src/main/java/com/LabWork/app/MangaStore/service/MangaService.java b/src/main/java/com/LabWork/app/MangaStore/service/MangaService.java
index 86a00bd..1df858b 100644
--- a/src/main/java/com/LabWork/app/MangaStore/service/MangaService.java
+++ b/src/main/java/com/LabWork/app/MangaStore/service/MangaService.java
@@ -20,16 +20,16 @@ import java.util.Optional;
 @Service
 public class MangaService {
     public final MangaRepository mangaRepository;
-    public final CreatorService creatorService;
+    public final CreatorRepository creatorRepository;
     public final ReaderService readerService;
     public final ReaderRepository readerRepository;
     private final ValidatorUtil validatorUtil;
 
-    public MangaService(MangaRepository mangaRepository, CreatorService  creatorService , ReaderService readerService, ReaderRepository readerRepository,
+    public MangaService(MangaRepository mangaRepository, CreatorRepository  creatorRepository, ReaderService readerService, ReaderRepository readerRepository,
                         ValidatorUtil validatorUtil) {
         this.mangaRepository = mangaRepository;
         this.readerService = readerService;
-        this.creatorService  = creatorService;
+        this.creatorRepository  = creatorRepository;
         this.readerRepository = readerRepository;
         this.validatorUtil = validatorUtil;
     }
@@ -52,10 +52,15 @@ public class MangaService {
         return mangaRepository.findAll();
     }
 
+    @Transactional(readOnly = true)
+    public Creator findCreator(Long id) {
+        final Optional<Creator> creator = creatorRepository.findById(id);
+        return creator.orElseThrow(() -> new CreatorNotFoundException(id));
+    }
 
     @Transactional
     public Manga addManga(Long creatorId, Integer chapterCount, String mangaName) {
-        final Creator currentCreator = creatorService.findCreator(creatorId);
+        final Creator currentCreator = findCreator(creatorId);
         final Manga manga = new Manga(currentCreator, mangaName, chapterCount);
         validatorUtil.validate(manga);
         return mangaRepository.save(manga);
@@ -63,7 +68,7 @@ public class MangaService {
 
     @Transactional
     public Manga addManga(MangaDto mangaDto) {
-        final Creator currentCreator = creatorService.findCreator(mangaDto.getCreatorId());
+        final Creator currentCreator = findCreator(mangaDto.getCreatorId());
         final Manga manga = new Manga(currentCreator, mangaDto);
         validatorUtil.validate(manga);
         return mangaRepository.save(manga);