Tanibukuro city’s Officer Kikukawa Reiji is the problem child of the
police force. He doesn't always follow protocol and he enforces justice
through his own personal morals. But it was that exact unwavering sense
of righteousness that convinced the chief of police that Reiji was a
perfect fit for a top secret undercover mission. He is given the task of
infiltrating the Sukiya organization, the biggest and most dangerous
mafia group of the Kanto region, and find solid evidence to arrest its
leader Todoroki Shuho. But being accepted and trusted in the mafia means
Reiji has to do unthinkable things and put himself in dangerous
situations where one little slip and his life would be over.