diff --git a/src/main/java/com/example/rhizome/app/infra/repository/DepartmentRepository.java b/src/main/java/com/example/rhizome/app/infra/repository/DepartmentRepository.java
index cdb8877..b6ded3a 100644
--- a/src/main/java/com/example/rhizome/app/infra/repository/DepartmentRepository.java
+++ b/src/main/java/com/example/rhizome/app/infra/repository/DepartmentRepository.java
@@ -1,50 +1,31 @@
 package com.example.rhizome.app.infra.repository;
 
-import com.example.rhizome.app.infra.entity.DepartmentEntity;
 import org.springframework.data.jpa.domain.Specification;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
 import org.springframework.stereotype.Repository;
 
+import com.example.rhizome.app.infra.entity.DepartmentEntity;
 
-/**
- * Specification:
- * 関数型インターフェースです。
- * JPAの一部として提供されていて、エンティティの情報を元に動的にクエリを生成し、DBからデータを取得します。
- * 使い方：
- * toPredicate をOverrideして使います。
- * パラメータ：
- * Root<T>：ルートエンティティを指します。<T>に指定したエンティティ（今回はDepartmentEntity）を用いてメンバにアクセスします。
- * CriteriaQuery<\?>：サブクエリを作成する際に使用します。※今回は使用しません
- * CriteriaBuilder:条件式（Where句以降の条件）の部分のクエリを作るためのビルダーです。
- * 戻り値はクエリを格納しているPredicateオブジェクトとなります。
- */
 @Repository
-public interface DepartmentRepository extends JpaRepository<DepartmentEntity, Integer>, JpaSpecificationExecutor<DepartmentEntity> {
+public interface DepartmentRepository
+		extends JpaRepository<DepartmentEntity, Integer>, JpaSpecificationExecutor<DepartmentEntity> {
 
+	static Specification<DepartmentEntity> idDepartmentEqual(Integer idDepartment) {
+		return idDepartment == null ? null
+				: (Specification<DepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.equal(root.get("idDepartment"), idDepartment);
+	}
 
-    static Specification<DepartmentEntity> idDepartmentEqual(Integer idDepartment) {
-        return idDepartment == null ?
-                null :
-                // 戻り値の型 Specification<DepartmentEntity> にキャスト
-                (Specification<DepartmentEntity>)
-                        // ラムダ式で記載しているが書いてあることは criteriaBuilder を使って Where句の後の "'idDepartment' = idDepartment(変数)"
-                        // を作成している
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.equal(root.get("idDepartment"), idDepartment);
-    }
+	static Specification<DepartmentEntity> nmDepartmentEqual(String nmDepartment) {
+		return (nmDepartment == null || nmDepartment.isEmpty()) ? null
+				: (Specification<DepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.like(root.get("nmDepartment"), nmDepartment);
+	}
 
-    static Specification<DepartmentEntity> nmDepartmentEqual(String nmDepartment) {
-        return (nmDepartment == null || nmDepartment.isEmpty()) ?
-                null :
-                (Specification<DepartmentEntity>)
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.like(root.get("nmDepartment"), nmDepartment);
-    }
-
-
-    static Specification<DepartmentEntity> nmDepartmentLike(String nmDepartment) {
-        return (nmDepartment == null || nmDepartment.isEmpty()) ?
-                null :
-                (Specification<DepartmentEntity>)
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.like(root.get("nmDepartment"), "%" + nmDepartment + "%");
-    }
+	static Specification<DepartmentEntity> nmDepartmentLike(String nmDepartment) {
+		return (nmDepartment == null || nmDepartment.isEmpty()) ? null
+				: (Specification<DepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.like(root.get("nmDepartment"), "%" + nmDepartment + "%");
+	}
 }
diff --git a/src/main/java/com/example/rhizome/app/infra/repository/EmployeeInfoRepository.java b/src/main/java/com/example/rhizome/app/infra/repository/EmployeeInfoRepository.java
index c2c8c5c..a32b4af 100644
--- a/src/main/java/com/example/rhizome/app/infra/repository/EmployeeInfoRepository.java
+++ b/src/main/java/com/example/rhizome/app/infra/repository/EmployeeInfoRepository.java
@@ -1,61 +1,42 @@
 package com.example.rhizome.app.infra.repository;
 
-import com.example.rhizome.app.infra.entity.EmployeeDepartmentEntity;
 import org.springframework.data.jpa.domain.Specification;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
 import org.springframework.stereotype.Repository;
 
-/**
- * ワンポイント情報（ここで登場する関数型インターフェース Specification について解説します）
- * Specification:
- * 関数型インターフェースです。
- * JPAの一部として提供されていて、エンティティの情報を元に動的にクエリを生成し、DBからデータを取得します。
- * 使い方：
- * toPredicate をOverrideして使います。
- * パラメータ：
- * Root<T>：ルートエンティティを指します。<T>に指定したエンティティ（今回はDepartmentEntity）を用いてメンバにアクセスします。
- * CriteriaQuery<\?>：サブクエリを作成する際に使用します。※今回は使用しません
- * CriteriaBuilder:条件式（Where句以降の条件）の部分のクエリを作るためのビルダーです。
- * 戻り値はクエリを格納しているPredicateオブジェクトとなります。
- */
+import com.example.rhizome.app.infra.entity.EmployeeDepartmentEntity;
+
 @Repository
-public interface EmployeeInfoRepository extends JpaRepository<EmployeeDepartmentEntity, Integer>, JpaSpecificationExecutor<EmployeeDepartmentEntity> {
+public interface EmployeeInfoRepository
+		extends JpaRepository<EmployeeDepartmentEntity, Integer>, JpaSpecificationExecutor<EmployeeDepartmentEntity> {
 
-    static Specification<EmployeeDepartmentEntity> idEmployeeEqual(Integer idEmployee) {
-        return idEmployee == null ?
-                null :
-                // 戻り値の型 Specification<EmployeeDepartmentEntity> にキャスト
-                (Specification<EmployeeDepartmentEntity>)
-                        // ラムダ式で記載しているが書いてあることは criteriaBuilder を使って Where句の後の "'idEmployee' = idEmployee(変数)"
-                        // を作成している
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.equal(root.get("idEmployee"), idEmployee);
-    }
+	static Specification<EmployeeDepartmentEntity> idEmployeeEqual(Integer idEmployee) {
+		return idEmployee == null ? null
+				: (Specification<EmployeeDepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.equal(root.get("idEmployee"), idEmployee);
+	}
 
-    static Specification<EmployeeDepartmentEntity> nmEmployeeEqual(String nmEmployee) {
-        return (nmEmployee == null || nmEmployee.isEmpty()) ?
-                null :
-                (Specification<EmployeeDepartmentEntity>)
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.like(root.get("nmEmployee"), "%" + nmEmployee + "%");
-    }
+	static Specification<EmployeeDepartmentEntity> nmEmployeeEqual(String nmEmployee) {
+		return (nmEmployee == null || nmEmployee.isEmpty()) ? null
+				: (Specification<EmployeeDepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.like(root.get("nmEmployee"), "%" + nmEmployee + "%");
+	}
 
-    static Specification<EmployeeDepartmentEntity> knEmployeeEqual(String knEmployee) {
-        return (knEmployee == null || knEmployee.isEmpty()) ?
-                null :
-                (Specification<EmployeeDepartmentEntity>)
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.like(root.get("knEmployee"), "%" + knEmployee + "%");
-    }
+	static Specification<EmployeeDepartmentEntity> knEmployeeEqual(String knEmployee) {
+		return (knEmployee == null || knEmployee.isEmpty()) ? null
+				: (Specification<EmployeeDepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.like(root.get("knEmployee"), "%" + knEmployee + "%");
+	}
 
-    static Specification<EmployeeDepartmentEntity> mailAddressEqual(String mailAddress) {
-        return (mailAddress == null || mailAddress.isEmpty()) ?
-                null :
-                (Specification<EmployeeDepartmentEntity>)
-                        (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder.like(root.get("mailAddress"), "%" + mailAddress + "%");
-    }
+	static Specification<EmployeeDepartmentEntity> mailAddressEqual(String mailAddress) {
+		return (mailAddress == null || mailAddress.isEmpty()) ? null
+				: (Specification<EmployeeDepartmentEntity>) (root, criteriaQuery, criteriaBuilder) -> criteriaBuilder
+						.like(root.get("mailAddress"), "%" + mailAddress + "%");
+	}
 
-    static Specification<EmployeeDepartmentEntity> idDepartmentEqual(Integer idDepartment) {
-        return (root, query, criteriaBuilder) ->
-                idDepartment == null ? null :
-                        criteriaBuilder.equal(root.join("department").get("idDepartment"), idDepartment);
-    }
+	static Specification<EmployeeDepartmentEntity> idDepartmentEqual(Integer idDepartment) {
+		return (root, query, criteriaBuilder) -> idDepartment == null ? null
+				: criteriaBuilder.equal(root.join("department").get("idDepartment"), idDepartment);
+	}
 }
diff --git a/src/main/java/com/example/rhizome/app/infra/repository/EmployeeRepository.java b/src/main/java/com/example/rhizome/app/infra/repository/EmployeeRepository.java
index 82d6f8e..f19ed76 100644
--- a/src/main/java/com/example/rhizome/app/infra/repository/EmployeeRepository.java
+++ b/src/main/java/com/example/rhizome/app/infra/repository/EmployeeRepository.java
@@ -1,28 +1,20 @@
 package com.example.rhizome.app.infra.repository;
 
-import com.example.rhizome.app.infra.entity.EmployeeEntity;
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.stereotype.Repository;
-
 import java.util.List;
 import java.util.Optional;
 
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import com.example.rhizome.app.infra.entity.EmployeeEntity;
+
 @Repository
 public interface EmployeeRepository extends JpaRepository<EmployeeEntity, Integer> {
-    Optional<EmployeeEntity> findByMailAddressAndPassword(String mailAddress, String password);
+	Optional<EmployeeEntity> findByMailAddressAndPassword(String mailAddress, String password);
 
-    /**
-     * メールアドレスで検索
-     **/
-    Optional<EmployeeEntity> findByMailAddress(String mail);
+	Optional<EmployeeEntity> findByMailAddress(String mail);
 
-    /**
-     * IDで検索
-     **/
-    Optional<EmployeeEntity> findByIdEmployee(Integer idEmployee);
+	Optional<EmployeeEntity> findByIdEmployee(Integer idEmployee);
 
-    /**
-     * IDで検索
-     **/
-    List<EmployeeEntity> findByIdDepartment(Integer idDepartment);
+	List<EmployeeEntity> findByIdDepartment(Integer idDepartment);
 }