diff --git a/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryService.kt b/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryService.kt
index 9386a4ce..65441189 100644
--- a/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryService.kt
@@ -4,23 +4,34 @@ import dev.usbharu.hideout.domain.model.hideout.dto.PostResponse
 
 @Suppress("LongParameterList")
 interface PostResponseQueryService {
-    suspend fun findById(id: Long, userId: Long): PostResponse
+    suspend fun findById(id: Long, userId: Long?): PostResponse
     suspend fun findAll(
-        since: Long,
-        until: Long,
-        minId: Long,
-        maxId: Long,
-        limit: Long,
-        userId: Long
+        since: Long? = null,
+        until: Long? = null,
+        minId: Long? = null,
+        maxId: Long? = null,
+        limit: Int? = null,
+        userId: Long? = null
     ): List<PostResponse>
 
     suspend fun findByUserId(
         userId: Long,
-        since: Long,
-        until: Long,
-        minId: Long,
-        maxId: Long,
-        limit: Long,
-        userId2: Long
+        since: Long? = null,
+        until: Long? = null,
+        minId: Long? = null,
+        maxId: Long? = null,
+        limit: Int? = null,
+        userId2: Long? = null
+    ): List<PostResponse>
+
+    suspend fun findByUserNameAndUserDomain(
+        name: String,
+        domain: String,
+        since: Long? = null,
+        until: Long? = null,
+        minId: Long? = null,
+        maxId: Long? = null,
+        limit: Int? = null,
+        userId: Long? = null
     ): List<PostResponse>
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryServiceImpl.kt
index 858aa05f..51bd8ebe 100644
--- a/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/query/PostResponseQueryServiceImpl.kt
@@ -5,6 +5,7 @@ import dev.usbharu.hideout.repository.Posts
 import dev.usbharu.hideout.repository.Users
 import dev.usbharu.hideout.repository.toPost
 import dev.usbharu.hideout.repository.toUser
+import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.innerJoin
 import org.jetbrains.exposed.sql.select
 import org.jetbrains.exposed.sql.selectAll
@@ -12,7 +13,7 @@ import org.koin.core.annotation.Single
 
 @Single
 class PostResponseQueryServiceImpl : PostResponseQueryService {
-    override suspend fun findById(id: Long, userId: Long): PostResponse {
+    override suspend fun findById(id: Long, userId: Long?): PostResponse {
         return Posts
             .innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { Users.id })
             .select { Posts.id eq id }
@@ -21,12 +22,12 @@ class PostResponseQueryServiceImpl : PostResponseQueryService {
     }
 
     override suspend fun findAll(
-        since: Long,
-        until: Long,
-        minId: Long,
-        maxId: Long,
-        limit: Long,
-        userId: Long
+        since: Long?,
+        until: Long?,
+        minId: Long?,
+        maxId: Long?,
+        limit: Int?,
+        userId: Long?
     ): List<PostResponse> {
         return Posts
             .innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { id })
@@ -36,16 +37,32 @@ class PostResponseQueryServiceImpl : PostResponseQueryService {
 
     override suspend fun findByUserId(
         userId: Long,
-        since: Long,
-        until: Long,
-        minId: Long,
-        maxId: Long,
-        limit: Long,
-        userId2: Long
+        since: Long?,
+        until: Long?,
+        minId: Long?,
+        maxId: Long?,
+        limit: Int?,
+        userId2: Long?
     ): List<PostResponse> {
         return Posts
             .innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { id })
             .select { Posts.userId eq userId }
             .map { PostResponse.from(it.toPost(), it.toUser()) }
     }
+
+    override suspend fun findByUserNameAndUserDomain(
+        name: String,
+        domain: String,
+        since: Long?,
+        until: Long?,
+        minId: Long?,
+        maxId: Long?,
+        limit: Int?,
+        userId: Long?
+    ): List<PostResponse> {
+        return Posts
+            .innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { id })
+            .select { Users.name eq name and (Users.domain eq domain) }
+            .map { PostResponse.from(it.toPost(), it.toUser()) }
+    }
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt b/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt
index 39f91ad1..9b331370 100644
--- a/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/IPostRepository.kt
@@ -1,7 +1,6 @@
 package dev.usbharu.hideout.repository
 
 import dev.usbharu.hideout.domain.model.hideout.entity.Post
-import java.time.Instant
 
 @Suppress("LongParameterList")
 interface IPostRepository {
@@ -10,35 +9,7 @@ interface IPostRepository {
     suspend fun findOneById(id: Long, userId: Long? = null): Post?
     suspend fun findByUrl(url: String): Post?
     suspend fun delete(id: Long)
-    suspend fun findAll(
-        since: Instant?,
-        until: Instant?,
-        minId: Long?,
-        maxId: Long?,
-        limit: Int?,
-        userId: Long?
-    ): List<Post>
 
-    suspend fun findByUserNameAndDomain(
-        username: String,
-        s: String,
-        since: Instant?,
-        until: Instant?,
-        minId: Long?,
-        maxId: Long?,
-        limit: Int?,
-        userId: Long?
-    ): List<Post>
-
-    suspend fun findByUserId(
-        idOrNull: Long,
-        since: Instant?,
-        until: Instant?,
-        minId: Long?,
-        maxId: Long?,
-        limit: Int?,
-        userId: Long?
-    ): List<Post>
 
     suspend fun findByApId(id: String): Post?
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/api/PostApiServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/api/PostApiServiceImpl.kt
index b8957f87..e04bcd67 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/api/PostApiServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/api/PostApiServiceImpl.kt
@@ -3,14 +3,11 @@ package dev.usbharu.hideout.service.api
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.domain.model.hideout.dto.PostCreateDto
 import dev.usbharu.hideout.domain.model.hideout.dto.PostResponse
-import dev.usbharu.hideout.repository.*
+import dev.usbharu.hideout.query.PostResponseQueryService
+import dev.usbharu.hideout.repository.IUserRepository
 import dev.usbharu.hideout.service.post.IPostService
 import dev.usbharu.hideout.util.AcctUtil
 import kotlinx.coroutines.Dispatchers
-import org.jetbrains.exposed.sql.and
-import org.jetbrains.exposed.sql.innerJoin
-import org.jetbrains.exposed.sql.select
-import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
 import org.koin.core.annotation.Single
 import java.time.Instant
@@ -19,8 +16,8 @@ import dev.usbharu.hideout.domain.model.hideout.form.Post as FormPost
 @Single
 class PostApiServiceImpl(
     private val postService: IPostService,
-    private val postRepository: IPostRepository,
-    private val userRepository: IUserRepository
+    private val userRepository: IUserRepository,
+    private val postResponseQueryService: PostResponseQueryService
 ) : IPostApiService {
     override suspend fun createPost(postForm: FormPost, userId: Long): PostResponse {
         val createdPost = postService.createLocal(
@@ -41,13 +38,7 @@ class PostApiServiceImpl(
     suspend fun <T> query(block: suspend () -> T): T =
         newSuspendedTransaction(Dispatchers.IO) { block() }
 
-    override suspend fun getById(id: Long, userId: Long?): PostResponse {
-        val query = query {
-            Posts.innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { Users.id }).select { Posts.id eq id }
-                .single()
-        }
-        return PostResponse.from(query.toPost(), query.toUser())
-    }
+    override suspend fun getById(id: Long, userId: Long?): PostResponse = postResponseQueryService.findById(id, userId)
 
     override suspend fun getAll(
         since: Instant?,
@@ -56,12 +47,8 @@ class PostApiServiceImpl(
         maxId: Long?,
         limit: Int?,
         userId: Long?
-    ): List<PostResponse> {
-        return query {
-            Posts.innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { id }).selectAll()
-                .map { PostResponse.from(it.toPost(), it.toUser()) }
-        }
-    }
+    ): List<PostResponse> =
+        postResponseQueryService.findAll(since?.toEpochMilli(), until?.toEpochMilli(), minId, maxId, limit, userId)
 
     override suspend fun getByUser(
         nameOrId: String,
@@ -75,18 +62,9 @@ class PostApiServiceImpl(
         val idOrNull = nameOrId.toLongOrNull()
         return if (idOrNull == null) {
             val acct = AcctUtil.parse(nameOrId)
-            query {
-                Posts.innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { id }).select {
-                    Users.name.eq(acct.username)
-                        .and(Users.domain eq (acct.domain ?: Config.configData.domain))
-                }.map { PostResponse.from(it.toPost(), it.toUser()) }
-            }
+            postResponseQueryService.findByUserNameAndUserDomain(acct.username, acct.domain ?: Config.configData.domain)
         } else {
-            query {
-                Posts.innerJoin(Users, onColumn = { Posts.userId }, otherColumn = { id }).select {
-                    Posts.userId eq idOrNull
-                }.map { PostResponse.from(it.toPost(), it.toUser()) }
-            }
+            postResponseQueryService.findByUserId(idOrNull)
         }
     }
 }