diff --git a/network/mhfpacket/msg_mhf_read_mercenary_w.go b/network/mhfpacket/msg_mhf_read_mercenary_w.go
index 7cb0117e7..c80afee14 100644
--- a/network/mhfpacket/msg_mhf_read_mercenary_w.go
+++ b/network/mhfpacket/msg_mhf_read_mercenary_w.go
@@ -1,17 +1,17 @@
 package mhfpacket
 
-import ( 
- "errors" 
+import (
+	"errors"
 
- 	"erupe-ce/network/clientctx"
-	"erupe-ce/network"
 	"erupe-ce/common/byteframe"
+	"erupe-ce/network"
+	"erupe-ce/network/clientctx"
 )
 
 // MsgMhfReadMercenaryW represents the MSG_MHF_READ_MERCENARY_W
 type MsgMhfReadMercenaryW struct {
 	AckHandle uint32
-	Unk0      uint8
+	Unk0      bool
 	Unk1      uint8
 	Unk2      uint16 // Hardcoded 0 in the binary
 }
@@ -24,7 +24,7 @@ func (m *MsgMhfReadMercenaryW) Opcode() network.PacketID {
 // Parse parses the packet from binary
 func (m *MsgMhfReadMercenaryW) Parse(bf *byteframe.ByteFrame, ctx *clientctx.ClientContext) error {
 	m.AckHandle = bf.ReadUint32()
-	m.Unk0 = bf.ReadUint8()
+	m.Unk0 = bf.ReadBool()
 	m.Unk1 = bf.ReadUint8()
 	m.Unk2 = bf.ReadUint16()
 	return nil
diff --git a/network/mhfpacket/msg_mhf_save_mercenary.go b/network/mhfpacket/msg_mhf_save_mercenary.go
index a52c973ab..3aa2b0311 100644
--- a/network/mhfpacket/msg_mhf_save_mercenary.go
+++ b/network/mhfpacket/msg_mhf_save_mercenary.go
@@ -1,18 +1,20 @@
 package mhfpacket
 
-import ( 
- "errors" 
+import (
+	"errors"
 
- 	"erupe-ce/network/clientctx"
-	"erupe-ce/network"
 	"erupe-ce/common/byteframe"
+	"erupe-ce/network"
+	"erupe-ce/network/clientctx"
 )
 
 // MsgMhfSaveMercenary represents the MSG_MHF_SAVE_MERCENARY
-type MsgMhfSaveMercenary struct{
-	AckHandle      uint32
-	DataSize       uint32
-	RawDataPayload []byte
+type MsgMhfSaveMercenary struct {
+	AckHandle uint32
+	GCP       uint32
+	Unk0      uint32
+	MercData  []byte
+	Unk1      uint32
 }
 
 // Opcode returns the ID associated with this packet type.
@@ -23,8 +25,11 @@ func (m *MsgMhfSaveMercenary) Opcode() network.PacketID {
 // Parse parses the packet from binary
 func (m *MsgMhfSaveMercenary) Parse(bf *byteframe.ByteFrame, ctx *clientctx.ClientContext) error {
 	m.AckHandle = bf.ReadUint32()
-	m.DataSize = bf.ReadUint32()
-	m.RawDataPayload = bf.ReadBytes(uint(m.DataSize))
+	bf.ReadUint32() // lenData
+	m.GCP = bf.ReadUint32()
+	m.Unk0 = bf.ReadUint32()
+	m.MercData = bf.ReadBytes(uint(bf.ReadUint32()))
+	m.Unk1 = bf.ReadUint32()
 	return nil
 }
 
diff --git a/patch-schema/mercenary.sql b/patch-schema/mercenary.sql
new file mode 100644
index 000000000..f67e4fe4e
--- /dev/null
+++ b/patch-schema/mercenary.sql
@@ -0,0 +1,5 @@
+BEGIN;
+
+CREATE SEQUENCE IF NOT EXISTS public.rasta_id_seq;
+
+END;
\ No newline at end of file
diff --git a/server/channelserver/handlers_cast_binary.go b/server/channelserver/handlers_cast_binary.go
index 304369295..bf0f2f105 100644
--- a/server/channelserver/handlers_cast_binary.go
+++ b/server/channelserver/handlers_cast_binary.go
@@ -16,6 +16,7 @@ import (
 const (
 	BinaryMessageTypeState      = 0
 	BinaryMessageTypeChat       = 1
+	BinaryMessageTypeData       = 3
 	BinaryMessageTypeMailNotify = 4
 	BinaryMessageTypeEmote      = 6
 )
diff --git a/server/channelserver/handlers_mercenary.go b/server/channelserver/handlers_mercenary.go
index 606579fe5..37ce9e628 100644
--- a/server/channelserver/handlers_mercenary.go
+++ b/server/channelserver/handlers_mercenary.go
@@ -9,7 +9,6 @@ import (
 	"go.uber.org/zap"
 	"io"
 	"io/ioutil"
-	"math/rand"
 	"os"
 	"path/filepath"
 )
@@ -132,65 +131,57 @@ func handleMsgMhfCreateMercenary(s *Session, p mhfpacket.MHFPacket) {
 
 	bf := byteframe.NewByteFrame()
 
-	bf.WriteUint32(0x00)          // Unk
-	bf.WriteUint32(rand.Uint32()) // Partner ID?
+	var nextID uint32
+	s.server.db.QueryRow("SELECT nextval('rasta_id_seq')").Scan(&nextID)
+
+	bf.WriteUint32(nextID)     // New MercID
+	bf.WriteUint32(0xDEADBEEF) // Unk
 
 	doAckSimpleSucceed(s, pkt.AckHandle, bf.Data())
 }
 
 func handleMsgMhfSaveMercenary(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfSaveMercenary)
-	bf := byteframe.NewByteFrameFromBytes(pkt.RawDataPayload)
-	GCPValue := bf.ReadUint32()
-	_ = bf.ReadUint32() // unk
-	MercDataSize := bf.ReadUint32()
-	MercData := bf.ReadBytes(uint(MercDataSize))
-	_ = bf.ReadUint32() // unk
-
-	if MercDataSize > 0 {
-		// the save packet has an extra null byte after its size
-		_, err := s.server.db.Exec("UPDATE characters SET savemercenary=$1 WHERE id=$2", MercData[:MercDataSize], s.charID)
-		if err != nil {
-			s.logger.Fatal("Failed to update savemercenary and gcp in db", zap.Error(err))
-		}
-	}
-	// gcp value is always present regardless
-	_, err := s.server.db.Exec("UPDATE characters SET gcp=$1 WHERE id=$2", GCPValue, s.charID)
-	if err != nil {
-		s.logger.Fatal("Failed to update savemercenary and gcp in db", zap.Error(err))
+	if len(pkt.MercData) > 0 {
+		s.server.db.Exec("UPDATE characters SET savemercenary=$1 WHERE id=$2", pkt.MercData, s.charID)
 	}
+	s.server.db.Exec("UPDATE characters SET gcp=$1 WHERE id=$2", pkt.GCP, s.charID)
 	doAckSimpleSucceed(s, pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00})
 }
 
 func handleMsgMhfReadMercenaryW(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfReadMercenaryW)
+	if pkt.Unk0 {
+		doAckBufSucceed(s, pkt.AckHandle, make([]byte, 2))
+		return
+	}
 	var data []byte
 	var gcp uint32
-	// still has issues
-	err := s.server.db.QueryRow("SELECT savemercenary FROM characters WHERE id = $1", s.charID).Scan(&data)
-	if err != nil {
-		s.logger.Fatal("Failed to get savemercenary data from db", zap.Error(err))
-	}
-
-	err = s.server.db.QueryRow("SELECT COALESCE(gcp, 0) FROM characters WHERE id = $1", s.charID).Scan(&gcp)
-	if err != nil {
-		panic(err)
-	}
-	if len(data) == 0 {
-		data = []byte{0x00}
-	}
+	s.server.db.QueryRow("SELECT savemercenary FROM characters WHERE id = $1", s.charID).Scan(&data)
+	s.server.db.QueryRow("SELECT COALESCE(gcp, 0) FROM characters WHERE id = $1", s.charID).Scan(&gcp)
 
 	resp := byteframe.NewByteFrame()
-	resp.WriteBytes(data)
-	resp.WriteUint16(0)
+	if len(data) == 0 {
+		resp.WriteBytes(make([]byte, 3))
+	} else {
+		resp.WriteBytes(data[1:])
+		resp.WriteUint32(0) // Unk
+	}
 	resp.WriteUint32(gcp)
 	doAckBufSucceed(s, pkt.AckHandle, resp.Data())
 }
 
 func handleMsgMhfReadMercenaryM(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfReadMercenaryM)
-	// accessing actual rasta data of someone else still unsure of the formatting of this
-	doAckBufSucceed(s, pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00})
+	var data []byte
+	s.server.db.QueryRow("SELECT savemercenary FROM characters WHERE id = $1", pkt.CharID).Scan(&data)
+	resp := byteframe.NewByteFrame()
+	if len(data) == 0 {
+		resp.WriteBool(false)
+	} else {
+		resp.WriteBytes(data[4:])
+	}
+	doAckBufSucceed(s, pkt.AckHandle, resp.Data())
 }
 
 func handleMsgMhfContractMercenary(s *Session, p mhfpacket.MHFPacket) {}
diff --git a/server/channelserver/handlers_semaphore.go b/server/channelserver/handlers_semaphore.go
index 6659bd2da..95af79314 100644
--- a/server/channelserver/handlers_semaphore.go
+++ b/server/channelserver/handlers_semaphore.go
@@ -119,7 +119,7 @@ func handleMsgSysCreateAcquireSemaphore(s *Session, p mhfpacket.MHFPacket) {
 		bf.WriteUint32(newSemaphore.id)
 		doAckSimpleSucceed(s, pkt.AckHandle, bf.Data())
 	} else {
-		doAckSimpleFail(s, pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00})
+		doAckSimpleSucceed(s, pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00})
 	}
 }