diff --git a/build.gradle.kts b/build.gradle.kts
index ae1ed371..17396d06 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -110,6 +110,7 @@ dependencies {
     implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310")
     implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
     implementation("org.springframework.security:spring-security-oauth2-jose")
+    implementation("org.springframework.boot:spring-boot-starter-data-mongodb")
 
     implementation("io.ktor:ktor-client-logging-jvm:$ktor_version")
 
diff --git a/src/main/kotlin/dev/usbharu/hideout/domain/model/hideout/entity/Timeline.kt b/src/main/kotlin/dev/usbharu/hideout/domain/model/hideout/entity/Timeline.kt
new file mode 100644
index 00000000..a7536851
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/domain/model/hideout/entity/Timeline.kt
@@ -0,0 +1,18 @@
+package dev.usbharu.hideout.domain.model.hideout.entity
+
+import org.springframework.data.annotation.Id
+import java.time.Instant
+
+data class Timeline(
+    @Id
+    val id: Long,
+    val userId: Long,
+    val timelineId: Long,
+    val postId: Long,
+    val postUserId: Long,
+    val createdAt: Instant,
+    val replyId: Long,
+    val repostId: Long,
+    val visibility: Visibility,
+    val sensitive: Boolean
+)
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/MongoTimelineRepository.kt b/src/main/kotlin/dev/usbharu/hideout/repository/MongoTimelineRepository.kt
new file mode 100644
index 00000000..7077fe99
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/MongoTimelineRepository.kt
@@ -0,0 +1,9 @@
+package dev.usbharu.hideout.repository
+
+import dev.usbharu.hideout.domain.model.hideout.entity.Timeline
+import org.springframework.data.mongodb.repository.MongoRepository
+
+interface MongoTimelineRepository : TimelineRepository, MongoRepository<Timeline, Long> {
+    override fun findByUserId(id: Long): List<Timeline>
+    override fun findByUserIdAndTimelineId(userId: Long, timelineId: Long): List<Timeline>
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/TimelineRepository.kt b/src/main/kotlin/dev/usbharu/hideout/repository/TimelineRepository.kt
new file mode 100644
index 00000000..80b88278
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/TimelineRepository.kt
@@ -0,0 +1,8 @@
+package dev.usbharu.hideout.repository
+
+import dev.usbharu.hideout.domain.model.hideout.entity.Timeline
+
+interface TimelineRepository {
+    fun findByUserId(id: Long): List<Timeline>
+    fun findByUserIdAndTimelineId(userId: Long, timelineId: Long): List<Timeline>
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
index 2c7cc38a..d0f91b25 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
@@ -23,13 +23,18 @@ class PostServiceImpl(
     }
 
     override suspend fun createRemote(post: Post): Post {
-        return postRepository.save(post)
+        return internalCreate(post)
     }
 
     override fun addInterceptor(postCreateInterceptor: PostCreateInterceptor) {
         interceptors.add(postCreateInterceptor)
     }
 
+    private suspend fun internalCreate(post: Post): Post {
+
+        return postRepository.save(post)
+    }
+
     private suspend fun internalCreate(post: PostCreateDto): Post {
         val user = userRepository.findById(post.userId) ?: throw UserNotFoundException("${post.userId} was not found")
         val id = postRepository.generateId()
@@ -44,6 +49,6 @@ class PostServiceImpl(
             repostId = null,
             replyId = null
         )
-        return postRepository.save(createPost)
+        return internalCreate(post)
     }
 }
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 4d052250..876dbe3d 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -22,6 +22,9 @@ spring:
     url: "jdbc:h2:./test-dev2;MODE=POSTGRESQL"
     username: ""
     password: ""
+  data:
+    mongodb:
+
 
   h2:
     console: