diff --git a/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt
index 2da0512d..eec057f4 100644
--- a/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryService.kt
@@ -3,8 +3,10 @@ package dev.usbharu.hideout.query
 import dev.usbharu.hideout.domain.model.hideout.entity.User
 
 interface UserQueryService {
+    suspend fun findAll(limit: Int, offset: Long): List<User>
     suspend fun findById(id: Long): User
     suspend fun findByName(name: String): List<User>
     suspend fun findByNameAndDomain(name: String, domain: String): User
     suspend fun findByUrl(url: String): User
+    suspend fun findByIds(ids: List<Long>): List<User>
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt
index d51938d6..e96dea20 100644
--- a/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/query/UserQueryServiceImpl.kt
@@ -5,19 +5,23 @@ import dev.usbharu.hideout.repository.Users
 import dev.usbharu.hideout.repository.toUser
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.select
+import org.jetbrains.exposed.sql.selectAll
+import org.koin.core.annotation.Single
 
+@Single
 class UserQueryServiceImpl : UserQueryService {
+    override suspend fun findAll(limit: Int, offset: Long): List<User> =
+        Users.selectAll().limit(limit, offset).map { it.toUser() }
+
     override suspend fun findById(id: Long): User = Users.select { Users.id eq id }.single().toUser()
 
-    override suspend fun findByName(name: String): List<User> {
-        return Users.select { Users.name eq name }.map { it.toUser() }
-    }
+    override suspend fun findByName(name: String): List<User> = Users.select { Users.name eq name }.map { it.toUser() }
 
-    override suspend fun findByNameAndDomain(name: String, domain: String): User {
-        return Users.select { Users.name eq name and (Users.domain eq domain) }.single().toUser()
-    }
+    override suspend fun findByNameAndDomain(name: String, domain: String): User =
+        Users.select { Users.name eq name and (Users.domain eq domain) }.single().toUser()
 
-    override suspend fun findByUrl(url: String): User {
-        return Users.select { Users.url eq url }.single().toUser()
-    }
+    override suspend fun findByUrl(url: String): User = Users.select { Users.url eq url }.single().toUser()
+
+    override suspend fun findByIds(ids: List<Long>): List<User> =
+        Users.select { Users.id inList ids }.map { it.toUser() }
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/api/IUserApiService.kt b/src/main/kotlin/dev/usbharu/hideout/service/api/IUserApiService.kt
index 17d548f1..580d4115 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/api/IUserApiService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/api/IUserApiService.kt
@@ -12,8 +12,6 @@ interface IUserApiService {
 
     suspend fun findByAcct(acct: Acct): UserResponse
 
-    suspend fun findByAccts(accts: List<Acct>): List<UserResponse>
-
     suspend fun findFollowers(userId: Long): List<UserResponse>
 
     suspend fun findFollowings(userId: Long): List<UserResponse>
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/api/UserApiServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/api/UserApiServiceImpl.kt
index b5347983..70fc8bd3 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/api/UserApiServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/api/UserApiServiceImpl.kt
@@ -3,36 +3,38 @@ package dev.usbharu.hideout.service.api
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.domain.model.Acct
 import dev.usbharu.hideout.domain.model.hideout.dto.UserResponse
-import dev.usbharu.hideout.service.user.IUserService
+import dev.usbharu.hideout.query.FollowerQueryService
+import dev.usbharu.hideout.query.UserQueryService
 import org.koin.core.annotation.Single
+import kotlin.math.min
 
 @Single
-class UserApiServiceImpl(private val userService: IUserService) : IUserApiService {
+class UserApiServiceImpl(
+    private val userQueryService: UserQueryService,
+    private val followerQueryService: FollowerQueryService
+) : IUserApiService {
     override suspend fun findAll(limit: Int?, offset: Long): List<UserResponse> =
-        userService.findAll(limit, offset).map { UserResponse.from(it) }
+        userQueryService.findAll(min(limit ?: 100, 100), offset).map { UserResponse.from(it) }
 
-    override suspend fun findById(id: Long): UserResponse = UserResponse.from(userService.findById(id))
+    override suspend fun findById(id: Long): UserResponse = UserResponse.from(userQueryService.findById(id))
 
     override suspend fun findByIds(ids: List<Long>): List<UserResponse> =
-        userService.findByIds(ids).map { UserResponse.from(it) }
+        userQueryService.findByIds(ids).map { UserResponse.from(it) }
 
     override suspend fun findByAcct(acct: Acct): UserResponse =
-        UserResponse.from(userService.findByNameAndDomain(acct.username, acct.domain))
-
-    override suspend fun findByAccts(accts: List<Acct>): List<UserResponse> {
-        return userService.findByNameAndDomains(accts.map { it.username to (it.domain ?: Config.configData.domain) })
-            .map { UserResponse.from(it) }
-    }
+        UserResponse.from(userQueryService.findByNameAndDomain(acct.username, acct.domain ?: Config.configData.domain))
 
     override suspend fun findFollowers(userId: Long): List<UserResponse> =
-        userService.findFollowersById(userId).map { UserResponse.from(it) }
+        followerQueryService.findFollowersById(userId).map { UserResponse.from(it) }
 
     override suspend fun findFollowings(userId: Long): List<UserResponse> =
-        userService.findFollowingById(userId).map { UserResponse.from(it) }
+        followerQueryService.findFollowingById(userId).map { UserResponse.from(it) }
 
     override suspend fun findFollowersByAcct(acct: Acct): List<UserResponse> =
-        userService.findFollowersByNameAndDomain(acct.username, acct.domain).map { UserResponse.from(it) }
+        followerQueryService.findFollowersByNameAndDomain(acct.username, acct.domain ?: Config.configData.domain)
+            .map { UserResponse.from(it) }
 
     override suspend fun findFollowingsByAcct(acct: Acct): List<UserResponse> =
-        userService.findFollowingByNameAndDomain(acct.username, acct.domain).map { UserResponse.from(it) }
+        followerQueryService.findFollowingByNameAndDomain(acct.username, acct.domain ?: Config.configData.domain)
+            .map { UserResponse.from(it) }
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/user/IUserService.kt b/src/main/kotlin/dev/usbharu/hideout/service/user/IUserService.kt
index eb806eb1..f247b30a 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/user/IUserService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/user/IUserService.kt
@@ -10,16 +10,8 @@ interface IUserService {
 
     suspend fun findById(id: Long): User
 
-    suspend fun findByIds(ids: List<Long>): List<User>
-
-    suspend fun findByName(name: String): List<User>
-
     suspend fun findByNameLocalUser(name: String): User
 
-    suspend fun findByNameAndDomain(name: String, domain: String? = null): User
-
-    suspend fun findByNameAndDomains(names: List<Pair<String, String>>): List<User>
-
     suspend fun findByUrl(url: String): User
 
     suspend fun findByUrls(urls: List<String>): List<User>
@@ -32,12 +24,6 @@ interface IUserService {
 
     suspend fun findFollowersById(id: Long): List<User>
 
-    suspend fun findFollowersByNameAndDomain(name: String, domain: String?): List<User>
-
-    suspend fun findFollowingById(id: Long): List<User>
-
-    suspend fun findFollowingByNameAndDomain(name: String, domain: String?): List<User>
-
     /**
      * フォローリクエストを送信する
      *
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/user/UserService.kt b/src/main/kotlin/dev/usbharu/hideout/service/user/UserService.kt
index bf531e74..024a3659 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/user/UserService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/user/UserService.kt
@@ -31,23 +31,11 @@ class UserService(
     override suspend fun findById(id: Long): User =
         userRepository.findById(id) ?: throw UserNotFoundException("$id was not found.")
 
-    override suspend fun findByIds(ids: List<Long>): List<User> = userRepository.findByIds(ids)
-
-    override suspend fun findByName(name: String): List<User> = userRepository.findByName(name)
-
     override suspend fun findByNameLocalUser(name: String): User {
         return userRepository.findByNameAndDomain(name, Config.configData.domain)
             ?: throw UserNotFoundException("$name was not found.")
     }
 
-    override suspend fun findByNameAndDomain(name: String, domain: String?): User {
-        return userRepository.findByNameAndDomain(name, domain ?: Config.configData.domain)
-            ?: throw UserNotFoundException("$name was not found.")
-    }
-
-    override suspend fun findByNameAndDomains(names: List<Pair<String, String>>): List<User> =
-        userRepository.findByNameAndDomains(names)
-
     override suspend fun findByUrl(url: String): User =
         userRepository.findByUrl(url) ?: throw UserNotFoundException("$url was not found.")
 
@@ -97,17 +85,6 @@ class UserService(
     }
 
     override suspend fun findFollowersById(id: Long): List<User> = userRepository.findFollowersById(id)
-    override suspend fun findFollowersByNameAndDomain(name: String, domain: String?): List<User> {
-        TODO("Not yet implemented")
-    }
-
-    override suspend fun findFollowingById(id: Long): List<User> {
-        TODO("Not yet implemented")
-    }
-
-    override suspend fun findFollowingByNameAndDomain(name: String, domain: String?): List<User> {
-        TODO("Not yet implemented")
-    }
 
     // TODO APのフォロー処理を作る
     override suspend fun followRequest(id: Long, followerId: Long): Boolean {