Lawyer Shindo Kai is an undefeated ace, also working as a hitman who punishes criminals exploiting legal loopholes. While secretly serving justice, he hides his true identity as the illegitimate son of Gondo Heihachiro, a yakuza boss. When Gondo's group is attacked by the rising Mayhem gang, Kai, having recently lost a case due to sabotaged evidence, investigates the betrayal. His pursuit of the truth leads to a bloody reckoning.
| Actor | Role |
|---|---|
 Hirofumi ArakiShindo Kai | Shindo Kai |
 Shō JinnaiKito | Kito |
 Mone AkitaniKataoka Aoi | Kataoka Aoi |
 Sho WatanabeKajihara Mitsuya | Kajihara Mitsuya |
 Kensuke TakahashiNot listed | Not listed |
 Naoya KitagawaNot listed | Not listed |
 Masayuki InoNot listed | Not listed |
 Kōji SaikawaNot listed | Not listed |