Naito is serving time for his aggressive fundraising in the securities world, but returns to Osaka after completing his sentence. Although he wants to get clean, Oyodo Shinkin Bank has tasked Naito to raise funds.
Includes: King of Sha-kin, King of Sha-kin 2, King of Sha-kin 3, King of Sha-kin 4, Debt King Part V: Project Okinawa, Debt King Part VI: Legendary Speculator in Naniwa, Debt King Part VII: Millennium, King of Sha-kin 8, King of Sha-kin: Final