diff --git a/src/main/java/hello/booktown/domain/User.java b/src/main/java/hello/booktown/domain/User.java
index a31edc7..a77471f 100644
--- a/src/main/java/hello/booktown/domain/User.java
+++ b/src/main/java/hello/booktown/domain/User.java
@@ -1,11 +1,10 @@
 package hello.booktown.domain;
 
+import hello.booktown.domain.enums.Difficulty;
 import hello.booktown.domain.enums.UserRole;
 import jakarta.persistence.*;
 import lombok.*;
 
-import java.util.List;
-
 @Entity
 @Table(uniqueConstraints = {
         @UniqueConstraint(columnNames = {"provider", "providerId"})
@@ -31,32 +30,21 @@ public User(String email, String provider, String providerId, String username, S
     private Long id;
 
     private String email;
-    private String provider;
-    private String providerId;
-    private String username;
-    private String profileImage;
-    private Long score;
-    private String introduction;
 
-    @Enumerated(EnumType.STRING)
-    @Column(nullable = false)
-    private UserRole role;
+    private String provider;
 
-    @OneToMany(mappedBy = "user", cascade = CascadeType.REMOVE, orphanRemoval = true)
-    private List<BookApply> bookApplies;
+    private String providerId;
 
-    @OneToMany(mappedBy = "user", cascade = CascadeType.REMOVE, orphanRemoval = true)
-    private List<BookLike> bookLikes;
+    private String username;
 
-    @OneToMany(mappedBy = "user", cascade = CascadeType.REMOVE, orphanRemoval = true)
-    private List<Quiz> quizzes;
+    private String profileImage;
 
-    @OneToMany(mappedBy = "user", cascade = CascadeType.REMOVE, orphanRemoval = true)
-    private List<QuizSubmissionGroup> quizSubmissionGroups;
+    private Long score;
 
+    private String introduction;
 
-    @OneToMany(mappedBy = "user", cascade = CascadeType.REMOVE, orphanRemoval = true)
-    private List<hello.booktown.domain.quiz.QuizSubmit> quizSubmits;
+    @OneToMany(mappedBy = "user")
+    private java.util.List<BookApply> bookApplies;
 
     public void updateIntroduction(String introduction) {
         this.introduction = introduction;
@@ -70,6 +58,10 @@ public void updateScore(Long score) {
         this.score = score;
     }
 
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false)
+    private UserRole role;
+
     public void setProfileImage(String imageUrl) {
         this.profileImage = imageUrl;
     }