Naomasa Musaka

Former assassin Daiya has long left the criminal world, but he decides to take up a mission to kill a rival gang boss for a huge payday. The catch: To kill his target at a talent show, he must go undercover and perform in a pop dance group.

A businessman, Tsuda, runs into a childhood friend, Kojima, on the subway. Kojima is working as a semiprofessional boxer. Tsuda soon begins to suspect that Kojima might be having an affair with his fiancée Hizuru. After an altercation, Tsuda begins training rigorously himself, leading to an extremely bloody, violent confrontation.