Fukuoka may not appear like a city where crime is rampantly increasing, but the Hakata neighborhood in particular is home to numerous mafia groups and hired killers. Additionally, Niwaka Samurai's reputation as a contract killer has long been propagated.
Assassin In an effort to acquire the cash necessary to free his sister from their control, Lin Xianming works for the Kakyuu Group, one of these clandestine groups. Everything changes drastically when he runs across detective Zenji Banba, who is poised to reveal the corrupt mayor's association with the Kakyuu organization. Particularly given that Lin must forcefully partner with him of all people in order to avoid becoming a victim himself...