diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 12ab2793..00000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/HELP.md b/HELP.md
deleted file mode 100644
index 8796434c..00000000
--- a/HELP.md
+++ /dev/null
@@ -1,32 +0,0 @@
-# Getting Started
-
-### Reference Documentation
-
-For further reference, please consider the following sections:
-
-* [Official Gradle documentation](https://docs.gradle.org)
-* [Spring Boot Gradle Plugin Reference Guide](https://docs.spring.io/spring-boot/3.3.4/gradle-plugin)
-* [Create an OCI image](https://docs.spring.io/spring-boot/3.3.4/gradle-plugin/packaging-oci-image.html)
-* [Spring Data JPA](https://docs.spring.io/spring-boot/docs/3.3.4/reference/htmlsingle/index.html#data.sql.jpa-and-spring-data)
-* [Spring Boot DevTools](https://docs.spring.io/spring-boot/docs/3.3.4/reference/htmlsingle/index.html#using.devtools)
-* [Spring Security](https://docs.spring.io/spring-boot/docs/3.3.4/reference/htmlsingle/index.html#web.security)
-* [Spring Web](https://docs.spring.io/spring-boot/docs/3.3.4/reference/htmlsingle/index.html#web)
-
-### Guides
-
-The following guides illustrate how to use some features concretely:
-
-* [Accessing Data with JPA](https://spring.io/guides/gs/accessing-data-jpa/)
-* [Securing a Web Application](https://spring.io/guides/gs/securing-web/)
-* [Spring Boot and OAuth2](https://spring.io/guides/tutorials/spring-boot-oauth2/)
-* [Authenticating a User with LDAP](https://spring.io/guides/gs/authenticating-ldap/)
-* [Building a RESTful Web Service](https://spring.io/guides/gs/rest-service/)
-* [Serving Web Content with Spring MVC](https://spring.io/guides/gs/serving-web-content/)
-* [Building REST services with Spring](https://spring.io/guides/tutorials/rest/)
-
-### Additional Links
-
-These additional references should also help you:
-
-* [Gradle Build Scans – insights for your project's build](https://scans.gradle.com#gradle)
-
diff --git a/gradlew b/gradlew
old mode 100755
new mode 100644
diff --git a/gradlew.bat b/gradlew.bat
index 9b42019c..9d21a218 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,94 +1,94 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-@rem SPDX-License-Identifier: Apache-2.0
-@rem
-
-@if "%DEBUG%"=="" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%"=="" set DIRNAME=.
-@rem This is normally unused
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if %ERRORLEVEL% equ 0 goto execute
-
-echo. 1>&2
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto execute
-
-echo. 1>&2
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
-
-goto fail
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
-
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/src/main/java/org/ioteatime/meonghanyangserver/user/domain/UserEntity.java b/src/main/java/org/ioteatime/meonghanyangserver/user/domain/UserEntity.java
new file mode 100644
index 00000000..ec753692
--- /dev/null
+++ b/src/main/java/org/ioteatime/meonghanyangserver/user/domain/UserEntity.java
@@ -0,0 +1,25 @@
+package org.ioteatime.meonghanyangserver.user.domain;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Entity
+@NoArgsConstructor
+public class UserEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false)
+    private String nickname;
+
+    @Column(nullable = false)
+    private String email;
+
+    @Column(nullable = false)
+    private String password;
+
+    @Column private String profileImgUrl;
+}
diff --git a/src/main/java/org/ioteatime/meonghanyangserver/user/repository/JpaUserRepository.java b/src/main/java/org/ioteatime/meonghanyangserver/user/repository/JpaUserRepository.java
new file mode 100644
index 00000000..2e4eabd1
--- /dev/null
+++ b/src/main/java/org/ioteatime/meonghanyangserver/user/repository/JpaUserRepository.java
@@ -0,0 +1,9 @@
+package org.ioteatime.meonghanyangserver.user.repository;
+
+import java.util.Optional;
+import org.ioteatime.meonghanyangserver.user.domain.UserEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface JpaUserRepository extends JpaRepository<UserEntity, Long> {
+    Optional<UserEntity> findByEmail(String email);
+}
diff --git a/src/main/java/org/ioteatime/meonghanyangserver/user/repository/UserRepository.java b/src/main/java/org/ioteatime/meonghanyangserver/user/repository/UserRepository.java
new file mode 100644
index 00000000..e59bf71f
--- /dev/null
+++ b/src/main/java/org/ioteatime/meonghanyangserver/user/repository/UserRepository.java
@@ -0,0 +1,3 @@
+package org.ioteatime.meonghanyangserver.user.repository;
+
+public interface UserRepository {}
diff --git a/src/main/java/org/ioteatime/meonghanyangserver/user/repository/UserRepositoryImpl.java b/src/main/java/org/ioteatime/meonghanyangserver/user/repository/UserRepositoryImpl.java
new file mode 100644
index 00000000..46a3a476
--- /dev/null
+++ b/src/main/java/org/ioteatime/meonghanyangserver/user/repository/UserRepositoryImpl.java
@@ -0,0 +1,10 @@
+package org.ioteatime.meonghanyangserver.user.repository;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Repository;
+
+@Repository
+@RequiredArgsConstructor
+public class UserRepositoryImpl implements UserRepository {
+    private final JpaUserRepository jpaUserRepository;
+}