diff --git a/build.gradle.kts b/build.gradle.kts
index 379dfe2..d7e81a5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -75,11 +75,6 @@ subprojects {
         testImplementation("org.springframework.boot:spring-boot-starter-test")
     }
 
-    tasks.withType<JavaCompile> {
-        sourceCompatibility = "17"
-        targetCompatibility = "17"
-    }
-
     tasks.withType<KotlinCompile> {
         kotlinOptions {
             freeCompilerArgs = listOf("-Xjsr305=strict")
diff --git a/dongne-account-api/build.gradle.kts b/dongne-account-api/build.gradle.kts
new file mode 100644
index 0000000..ea96773
--- /dev/null
+++ b/dongne-account-api/build.gradle.kts
@@ -0,0 +1,3 @@
+dependencies {
+    implementation(project(":dongne-common"))
+}
\ No newline at end of file
diff --git a/dongne-account-api/src/main/kotlin/io/beaniejoy/dongnecafe/DongneAccountApiApplication.kt b/dongne-account-api/src/main/kotlin/io/beaniejoy/dongnecafe/DongneAccountApiApplication.kt
new file mode 100644
index 0000000..a79a862
--- /dev/null
+++ b/dongne-account-api/src/main/kotlin/io/beaniejoy/dongnecafe/DongneAccountApiApplication.kt
@@ -0,0 +1,11 @@
+package io.beaniejoy.dongnecafe
+
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+
+@SpringBootApplication
+class DongneAccountApiApplication
+
+fun main(args: Array<String>) {
+    runApplication<DongneAccountApiApplication>(*args)
+}
\ No newline at end of file
diff --git a/dongne-account-api/src/main/resources/application-local.yml b/dongne-account-api/src/main/resources/application-local.yml
new file mode 100644
index 0000000..0a4ee95
--- /dev/null
+++ b/dongne-account-api/src/main/resources/application-local.yml
@@ -0,0 +1,5 @@
+spring:
+  datasource:
+    url: jdbc:mysql://localhost:3306/dongne?autoreconnect=true&characterEncoding=utf8&serverTimezone=Asia/Seoul
+    username: root
+    password: beaniejoy # TODO 추후 보안에 대해 생각해보기
diff --git a/dongne-account-api/src/main/resources/application.yml b/dongne-account-api/src/main/resources/application.yml
new file mode 100644
index 0000000..91aa6e4
--- /dev/null
+++ b/dongne-account-api/src/main/resources/application.yml
@@ -0,0 +1,27 @@
+spring:
+  profiles:
+    active: local
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+  jpa:
+    hibernate:
+      ddl-auto: none # use [service-api] flyway migration
+    properties:
+      hibernate:
+        dialect: org.hibernate.dialect.MySQL5InnoDBDialect
+        format_sql: true
+        show-sql: false
+    open-in-view:
+  flyway:
+    enabled: false
+  devtools:
+    livereload:
+      enabled: false # no use devtools' LiveReload Server
+
+server:
+  port: 9090
+
+logging:
+  level:
+    org.hibernate.SQL: debug # logger 통해 로깅
+    #    org.hibernate.type: trace
\ No newline at end of file
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/DongneCafeServiceApiApplicationTests.kt b/dongne-account-api/src/test/kotlin/io/beaniejoy/dongnecafe/DongneAccountApiApplicationTests.kt
similarity index 77%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/DongneCafeServiceApiApplicationTests.kt
rename to dongne-account-api/src/test/kotlin/io/beaniejoy/dongnecafe/DongneAccountApiApplicationTests.kt
index bdfac3c..d80294f 100644
--- a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/DongneCafeServiceApiApplicationTests.kt
+++ b/dongne-account-api/src/test/kotlin/io/beaniejoy/dongnecafe/DongneAccountApiApplicationTests.kt
@@ -4,7 +4,7 @@ import org.junit.jupiter.api.Test
 import org.springframework.boot.test.context.SpringBootTest
 
 @SpringBootTest
-internal class DongneCafeServiceApiApplicationTests {
+internal class DongneAccountApiApplicationTests {
 
     @Test
     fun contextLoads() {
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/common/BaseTimeEntity.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/common/BaseTimeEntity.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/common/BaseTimeEntity.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/common/BaseTimeEntity.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/Cafe.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/Cafe.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/Cafe.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/Cafe.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeImage.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeImage.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeImage.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeImage.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeMenu.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeMenu.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeMenu.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeMenu.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/MenuOption.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/MenuOption.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/MenuOption.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/MenuOption.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/OptionDetail.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/OptionDetail.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/entity/OptionDetail.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/OptionDetail.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuBulkDeleteRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuBulkDeleteRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuBulkDeleteRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuBulkDeleteRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuRegisterRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuRegisterRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuRegisterRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuRegisterRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuUpdateRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuUpdateRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuUpdateRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeMenuUpdateRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeRegisterRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeRegisterRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeRegisterRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeRegisterRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeUpdateRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeUpdateRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeUpdateRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/CafeUpdateRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionRegisterRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionRegisterRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionRegisterRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionRegisterRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionUpdateRequest.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionUpdateRequest.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionUpdateRequest.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/request/MenuOptionUpdateRequest.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeDetailedInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeDetailedInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeDetailedInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeDetailedInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeImageInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeImageInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeImageInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeImageInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuDetailedInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuDetailedInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuDetailedInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuDetailedInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeMenuInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeSearchInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeSearchInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeSearchInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/CafeSearchInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/MenuOptionInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/MenuOptionInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/MenuOptionInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/MenuOptionInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/OptionDetailInfo.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/OptionDetailInfo.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/model/response/OptionDetailInfo.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/model/response/OptionDetailInfo.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeMenuRepository.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeMenuRepository.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeMenuRepository.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeMenuRepository.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepository.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepository.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepository.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepository.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/MenuOptionRepository.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/MenuOptionRepository.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/MenuOptionRepository.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/MenuOptionRepository.kt
diff --git a/dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/OptionDetailRepository.kt b/dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/OptionDetailRepository.kt
similarity index 100%
rename from dongne-common/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/repository/OptionDetailRepository.kt
rename to dongne-common/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/OptionDetailRepository.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/DongneServiceApiApplication.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/DongneServiceApiApplication.kt
similarity index 67%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/DongneServiceApiApplication.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/DongneServiceApiApplication.kt
index b4f74ba..19d2072 100644
--- a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/DongneServiceApiApplication.kt
+++ b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/DongneServiceApiApplication.kt
@@ -4,8 +4,8 @@ import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
 
 @SpringBootApplication
-class DongneCafeServiceApiApplication
+class DongneServiceApiApplication
 
 fun main(args: Array<String>) {
-    runApplication<DongneCafeServiceApiApplication>(*args)
+    runApplication<DongneServiceApiApplication>(*args)
 }
\ No newline at end of file
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/common/config/AuditingConfig.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/common/config/AuditingConfig.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/common/config/AuditingConfig.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/common/config/AuditingConfig.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/common/entity/BaseEntityAuditorAware.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/common/entity/BaseEntityAuditorAware.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/common/entity/BaseEntityAuditorAware.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/common/entity/BaseEntityAuditorAware.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeController.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeController.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeController.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeController.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeMenuController.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeMenuController.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeMenuController.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/controller/CafeMenuController.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExceptionHandler.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExceptionHandler.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExceptionHandler.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExceptionHandler.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExistedException.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExistedException.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExistedException.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeExistedException.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeMenuNotFoundException.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeMenuNotFoundException.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeMenuNotFoundException.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeMenuNotFoundException.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeNotFoundException.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeNotFoundException.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/CafeNotFoundException.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/CafeNotFoundException.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/MenuOptionNotFoundException.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/MenuOptionNotFoundException.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/MenuOptionNotFoundException.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/MenuOptionNotFoundException.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/OptionDetailNotFoundException.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/OptionDetailNotFoundException.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/error/OptionDetailNotFoundException.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/error/OptionDetailNotFoundException.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuService.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuService.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuService.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuService.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeService.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeService.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeService.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeService.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/MenuOptionService.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/MenuOptionService.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/MenuOptionService.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/MenuOptionService.kt
diff --git a/dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/OptionDetailService.kt b/dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/OptionDetailService.kt
similarity index 100%
rename from dongne-service-api/src/main/java/io/beaniejoy/dongnecafe/domain/cafe/service/OptionDetailService.kt
rename to dongne-service-api/src/main/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/OptionDetailService.kt
diff --git a/dongne-service-api/src/main/resources/application.yml b/dongne-service-api/src/main/resources/application.yml
index 436480a..4c4880c 100644
--- a/dongne-service-api/src/main/resources/application.yml
+++ b/dongne-service-api/src/main/resources/application.yml
@@ -15,6 +15,9 @@ spring:
     baseline-on-migrate: true
     baseline-version: 0
     locations: classpath:db/migration,classpath:db/seed
+  devtools:
+    livereload:
+      enabled: false # no use devtools' LiveReload Server
 
 logging:
   level:
diff --git a/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/DongneServiceApiApplicationTests.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/DongneServiceApiApplicationTests.kt
new file mode 100644
index 0000000..1a4ce70
--- /dev/null
+++ b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/DongneServiceApiApplicationTests.kt
@@ -0,0 +1,12 @@
+package io.beaniejoy.dongnecafe
+
+import org.junit.jupiter.api.Test
+import org.springframework.boot.test.context.SpringBootTest
+
+@SpringBootTest
+internal class DongneServiceApiApplicationTests {
+
+    @Test
+    fun contextLoads() {
+    }
+}
\ No newline at end of file
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeTest.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeTest.kt
similarity index 100%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeTest.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/entity/CafeTest.kt
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepositoryTest.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepositoryTest.kt
similarity index 100%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepositoryTest.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/repository/CafeRepositoryTest.kt
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceIntegratedTest.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceIntegratedTest.kt
similarity index 100%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceIntegratedTest.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceIntegratedTest.kt
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceTest.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceTest.kt
similarity index 100%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceTest.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeMenuServiceTest.kt
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeServiceTest.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeServiceTest.kt
similarity index 97%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeServiceTest.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeServiceTest.kt
index 6855a8c..5e5247d 100644
--- a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/service/CafeServiceTest.kt
+++ b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/service/CafeServiceTest.kt
@@ -98,7 +98,7 @@ internal class CafeServiceTest {
 
         // TODO 'findByIdOrNull'은 kotlin test 라이브러리 필요한 듯
         val mockCafe = mock(Cafe::class.java)
-            doReturn(Optional.of(cafe)).`when`(mockCafeRepository.findById(eq(cafeId)))
+        `when`(mockCafeRepository.findById(cafeId)).thenReturn(Optional.of(mockCafe))
 
         doNothing().`when`(mockCafe).updateInfo(
             name = anyString(),
@@ -109,7 +109,7 @@ internal class CafeServiceTest {
 
         // when
         mockCafeService.updateInfo(
-            id = eq(cafeId),
+            id = cafeId,
             name = "updated_name",
             address = "updated_address",
             phoneNumber = "updated_phoneNumber",
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeMenuTestUtils.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeMenuTestUtils.kt
similarity index 100%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeMenuTestUtils.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeMenuTestUtils.kt
diff --git a/dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeTestUtils.kt b/dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeTestUtils.kt
similarity index 100%
rename from dongne-service-api/src/test/java/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeTestUtils.kt
rename to dongne-service-api/src/test/kotlin/io/beaniejoy/dongnecafe/domain/cafe/utils/CafeTestUtils.kt
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 741ff6f..a1387d1 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -1,3 +1,4 @@
 rootProject.name = "dongne-cafe-api"
 include("dongne-common")
 include("dongne-service-api")
+include("dongne-account-api")