diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 563ff1e..ca153ed 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -5,39 +5,13 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="3fefb2c4-b6f9-466b-a523-53352e8d6f95" name="更改" comment=":recycle: Refactored relation system&#10;:arrow_up: Support new realm &amp; relation api">
-      <change afterPath="$PROJECT_DIR$/pkg/internal/services/relationships.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/go.mod" beforeDir="false" afterPath="$PROJECT_DIR$/go.mod" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/go.sum" beforeDir="false" afterPath="$PROJECT_DIR$/go.sum" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/database/migrator.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/database/migrator.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/grpc/auth.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/grpc/auth.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/grpc/friendships.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/grpc/notify.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/grpc/notifier.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/grpc/realms.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/grpc/realms.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/grpc/server.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/grpc/server.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/models/accounts.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/models/accounts.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/models/clients.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/models/clients.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/models/friendships.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/models/relationships.go" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/pkg/internal/grpc/notifier.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/grpc/notifier.go" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/pkg/internal/models/notifications.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/models/notifications.go" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/pkg/internal/server/admin/notify_api.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/server/admin/notify_api.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/server/api/friendships_api.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/server/api/relationships_api.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/server/api/index.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/server/api/index.go" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/pkg/internal/server/api/notifications_api.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/server/api/notifications_api.go" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/pkg/internal/server/api/notify_api.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/server/api/notify_api.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/accounts.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/accounts.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/friendships.go" beforeDir="false" />
       <change beforePath="$PROJECT_DIR$/pkg/internal/services/notifications.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/notifications.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/perms.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/perms.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/realms.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/realms.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/friendships.pb.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/friendships.proto" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/friendships_grpc.pb.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/notify.pb.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/notify.proto" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/notify_grpc.pb.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/realms.pb.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/realms.proto" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/proto/realms_grpc.pb.go" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/pkg/internal/services/relationships.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/relationships.go" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
diff --git a/pkg/internal/grpc/notifier.go b/pkg/internal/grpc/notifier.go
index 8abbcfa..9c6476f 100644
--- a/pkg/internal/grpc/notifier.go
+++ b/pkg/internal/grpc/notifier.go
@@ -28,7 +28,7 @@ func (v *Server) NotifyUser(_ context.Context, in *proto.NotifyUserRequest) (*pr
 		Metadata:    metadata,
 		IsRealtime:  in.GetNotify().GetIsRealtime(),
 		IsForcePush: in.GetNotify().GetIsForcePush(),
-		UserID:      user.ID,
+		AccountID:   user.ID,
 	}
 
 	if notification.IsRealtime {
diff --git a/pkg/internal/models/notifications.go b/pkg/internal/models/notifications.go
index 9b35036..05d2832 100644
--- a/pkg/internal/models/notifications.go
+++ b/pkg/internal/models/notifications.go
@@ -7,13 +7,13 @@ import (
 type Notification struct {
 	BaseModel
 
-	Topic    string            `json:"topic"`
-	Title    string            `json:"title"`
-	Subtitle *string           `json:"subtitle"`
-	Body     string            `json:"body"`
-	Metadata datatypes.JSONMap `json:"metadata"`
-	UserID   uint              `json:"user_id"`
-	SenderID *uint             `json:"sender_id"`
+	Topic     string            `json:"topic"`
+	Title     string            `json:"title"`
+	Subtitle  *string           `json:"subtitle"`
+	Body      string            `json:"body"`
+	Metadata  datatypes.JSONMap `json:"metadata"`
+	AccountID uint              `json:"account_id"`
+	SenderID  *uint             `json:"sender_id"`
 
 	IsRealtime  bool `json:"is_realtime" gorm:"-"`
 	IsForcePush bool `json:"is_force_push" gorm:"-"`
diff --git a/pkg/internal/server/admin/notify_api.go b/pkg/internal/server/admin/notify_api.go
index 8f92cac..98e8e86 100644
--- a/pkg/internal/server/admin/notify_api.go
+++ b/pkg/internal/server/admin/notify_api.go
@@ -47,7 +47,7 @@ func notifyAllUser(c *fiber.Ctx) error {
 				Body:        data.Body,
 				IsRealtime:  data.IsRealtime,
 				IsForcePush: data.IsForcePush,
-				UserID:      user.ID,
+				AccountID:   user.ID,
 			}
 
 			if data.IsRealtime {
@@ -103,7 +103,7 @@ func notifyOneUser(c *fiber.Ctx) error {
 		Body:        data.Body,
 		IsRealtime:  data.IsRealtime,
 		IsForcePush: data.IsForcePush,
-		UserID:      user.ID,
+		AccountID:   user.ID,
 	}
 
 	if data.IsRealtime {
diff --git a/pkg/internal/server/api/notifications_api.go b/pkg/internal/server/api/notifications_api.go
index 420af66..25a6e70 100644
--- a/pkg/internal/server/api/notifications_api.go
+++ b/pkg/internal/server/api/notifications_api.go
@@ -17,7 +17,7 @@ func getNotifications(c *fiber.Ctx) error {
 	}
 	user := c.Locals("user").(models.Account)
 
-	tx := database.C.Where(&models.Notification{UserID: user.ID}).Model(&models.Notification{})
+	tx := database.C.Where(&models.Notification{AccountID: user.ID}).Model(&models.Notification{})
 
 	var count int64
 	var notifications []models.Notification
@@ -53,7 +53,7 @@ func markNotificationRead(c *fiber.Ctx) error {
 	var notify models.Notification
 	if err := database.C.Where(&models.Notification{
 		BaseModel: models.BaseModel{ID: uint(id)},
-		UserID:    user.ID,
+		AccountID: user.ID,
 	}).First(&notify).Error; err != nil {
 		return fiber.NewError(fiber.StatusNotFound, err.Error())
 	}
diff --git a/pkg/internal/server/api/notify_api.go b/pkg/internal/server/api/notify_api.go
index 78ba94f..89a3d48 100644
--- a/pkg/internal/server/api/notify_api.go
+++ b/pkg/internal/server/api/notify_api.go
@@ -42,7 +42,7 @@ func notifyUser(c *fiber.Ctx) error {
 		Body:        data.Body,
 		IsRealtime:  data.IsRealtime,
 		IsForcePush: data.IsForcePush,
-		UserID:      user.ID,
+		AccountID:   user.ID,
 		SenderID:    &client.ID,
 	}
 
diff --git a/pkg/internal/services/notifications.go b/pkg/internal/services/notifications.go
index e7ad318..ba70bc3 100644
--- a/pkg/internal/services/notifications.go
+++ b/pkg/internal/services/notifications.go
@@ -69,7 +69,7 @@ func PushNotification(notification models.Notification) error {
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	_, err := proto.NewStreamControllerClient(gap.H.GetDealerGrpcConn()).PushStream(ctx, &proto.PushStreamRequest{
-		UserId: uint64(notification.UserID),
+		UserId: uint64(notification.AccountID),
 		Body: models.UnifiedCommand{
 			Action:  "notifications.new",
 			Payload: notification,
@@ -80,13 +80,13 @@ func PushNotification(notification models.Notification) error {
 	}
 
 	// Skip push notification
-	if GetStatusDisturbable(notification.UserID) != nil {
+	if GetStatusDisturbable(notification.AccountID) != nil {
 		return nil
 	}
 
 	var subscribers []models.NotificationSubscriber
 	if err := database.C.Where(&models.NotificationSubscriber{
-		AccountID: notification.UserID,
+		AccountID: notification.AccountID,
 	}).Find(&subscribers).Error; err != nil {
 		return err
 	}
diff --git a/pkg/internal/services/relationships.go b/pkg/internal/services/relationships.go
index 86b8ca7..200d57e 100644
--- a/pkg/internal/services/relationships.go
+++ b/pkg/internal/services/relationships.go
@@ -94,9 +94,9 @@ func NewFriend(userA models.Account, userB models.Account, skipPending ...bool)
 		return relA, err
 	} else {
 		_ = NewNotification(models.Notification{
-			Title:  fmt.Sprintf("New friend request from %s", userA.Name),
-			Body:   fmt.Sprintf("You got a new friend request from %s. Go to your settings and decide how to deal it.", userA.Nick),
-			UserID: userB.ID,
+			Title:     fmt.Sprintf("New friend request from %s", userA.Name),
+			Body:      fmt.Sprintf("You got a new friend request from %s. Go to your settings and decide how to deal it.", userA.Nick),
+			AccountID: userB.ID,
 		})
 	}