diff --git a/network/mhfpacket/msg_sys_insert_user.go b/network/mhfpacket/msg_sys_insert_user.go
index b8aa206e6..13466c493 100644
--- a/network/mhfpacket/msg_sys_insert_user.go
+++ b/network/mhfpacket/msg_sys_insert_user.go
@@ -6,7 +6,9 @@ import (
 )
 
 // MsgSysInsertUser represents the MSG_SYS_INSERT_USER
-type MsgSysInsertUser struct{}
+type MsgSysInsertUser struct {
+	CharID uint32
+}
 
 // Opcode returns the ID associated with this packet type.
 func (m *MsgSysInsertUser) Opcode() network.PacketID {
@@ -20,5 +22,6 @@ func (m *MsgSysInsertUser) Parse(bf *byteframe.ByteFrame) error {
 
 // Build builds a binary packet from the current data.
 func (m *MsgSysInsertUser) Build(bf *byteframe.ByteFrame) error {
-	panic("Not implemented")
-}
\ No newline at end of file
+	bf.WriteUint32(m.CharID)
+	return nil
+}
diff --git a/network/mhfpacket/msg_sys_notify_user_binary.go b/network/mhfpacket/msg_sys_notify_user_binary.go
index e4914aeef..2fbb5a9cf 100644
--- a/network/mhfpacket/msg_sys_notify_user_binary.go
+++ b/network/mhfpacket/msg_sys_notify_user_binary.go
@@ -6,7 +6,10 @@ import (
 )
 
 // MsgSysNotifyUserBinary represents the MSG_SYS_NOTIFY_USER_BINARY
-type MsgSysNotifyUserBinary struct{}
+type MsgSysNotifyUserBinary struct {
+	CharID     uint32
+	BinaryType uint8
+}
 
 // Opcode returns the ID associated with this packet type.
 func (m *MsgSysNotifyUserBinary) Opcode() network.PacketID {
@@ -20,5 +23,7 @@ func (m *MsgSysNotifyUserBinary) Parse(bf *byteframe.ByteFrame) error {
 
 // Build builds a binary packet from the current data.
 func (m *MsgSysNotifyUserBinary) Build(bf *byteframe.ByteFrame) error {
-	panic("Not implemented")
-}
\ No newline at end of file
+	bf.WriteUint32(m.CharID)
+	bf.WriteUint8(m.BinaryType)
+	return nil
+}
diff --git a/server/channelserver/handlers.go b/server/channelserver/handlers.go
index 1212dff55..4e8f196e3 100644
--- a/server/channelserver/handlers.go
+++ b/server/channelserver/handlers.go
@@ -301,8 +301,35 @@ func handleMsgSysEnterStage(s *Session, p mhfpacket.MHFPacket) {
 	s.QueueAck(pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
 
 	// TODO(Andoryuuta): Notify existing stage clients that this new client has entered.
-	// TODO(Andoryuuta): Notify this client about all of the existing clients in the stage.
+	insertUserPkt := &mhfpacket.MsgSysInsertUser{
+		CharID: s.charID,
+	}
+	s.stage.BroadcastMHF(insertUserPkt, s)
 
+	// Just the first user binary type (name) for right now.
+	notifyUserBinary1Pkt := &mhfpacket.MsgSysNotifyUserBinary{
+		CharID:     s.charID,
+		BinaryType: 1,
+	}
+	s.stage.BroadcastMHF(notifyUserBinary1Pkt, s)
+
+	// TODO(Andoryuuta): Notify this client about all of the existing clients in the stage.
+	s.stage.RLock()
+	clientNotif := byteframe.NewByteFrame()
+	for session := range s.stage.clients {
+		(&mhfpacket.MsgSysInsertUser{
+			CharID: session.charID,
+		}).Build(clientNotif)
+
+		// Just the first user binary type (name) for right now.
+		(&mhfpacket.MsgSysNotifyUserBinary{
+			CharID:     session.charID,
+			BinaryType: 1,
+		}).Build(clientNotif)
+	}
+	s.stage.RUnlock()
+
+	s.QueueSend(clientNotif.Data())
 }
 
 func handleMsgSysBackStage(s *Session, p mhfpacket.MHFPacket) {}
diff --git a/server/channelserver/session.go b/server/channelserver/session.go
index e41cb17dc..55afd0d0a 100644
--- a/server/channelserver/session.go
+++ b/server/channelserver/session.go
@@ -29,7 +29,7 @@ type Session struct {
 // NewSession creates a new Session type.
 func NewSession(server *Server, conn net.Conn) *Session {
 	s := &Session{
-		logger:      server.logger,
+		logger:      server.logger.Named(conn.RemoteAddr().String()),
 		server:      server,
 		rawConn:     conn,
 		cryptConn:   network.NewCryptConn(conn),