diff --git a/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt b/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt
index a5f0603..6e2a01c 100644
--- a/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt
+++ b/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt
@@ -27,6 +27,6 @@ class User(id: EntityID<Int>) : IntEntity(id) {
     var liveAlertChannel by Users.liveAlertChannel
     var liveAlertMessage by Users.liveAlertMessage
 
-    val managers by User referrersOn UserManagers.user
-    val subordinate by User referrersOn UserManagers.manager
+    val managers by User.via(UserManagers.manager, UserManagers.user)
+    val subordinate by User.via(UserManagers.user, UserManagers.manager)
 }
\ No newline at end of file
diff --git a/common/src/main/kotlin/space/mori/chzzk_bot/common/models/UserManager.kt b/common/src/main/kotlin/space/mori/chzzk_bot/common/models/UserManager.kt
index 636c15e..b4e98f4 100644
--- a/common/src/main/kotlin/space/mori/chzzk_bot/common/models/UserManager.kt
+++ b/common/src/main/kotlin/space/mori/chzzk_bot/common/models/UserManager.kt
@@ -1,8 +1,9 @@
 package space.mori.chzzk_bot.common.models
 
+import org.jetbrains.exposed.sql.ReferenceOption
 import org.jetbrains.exposed.sql.Table
 
 object UserManagers: Table("user_managers") {
-    val user = reference("user_id", Users)
-    val manager = reference("manager_id", Users)
+    val user = reference("user_id", Users, ReferenceOption.CASCADE)
+    val manager = reference("manager_id", Users, ReferenceOption.CASCADE)
 }
\ No newline at end of file