Senri used to go on adventures with his brother, but Kazuto is long gone...After suffering a blow to the head, Senri passes out. When he comes to, he's surrounded by professional gangsters and his classmate, Itakura. Senri thought Itakura was the victim of his scam, but in reality it was a set-up that puts Senri in grave danger. Itakura offers a deal: freedom for Senri and his abducted friend in exchange for all of the money that Senri's been saving...