Arashi Mikami appears to be a typical 17-year-old high school student, despite his social clumsiness. Nevertheless, he belongs to Black Label, a clandestine vigilante organization that confronts ambitious criminals beyond the capacity of the legal system. However, coping with crime bosses is no easy task, and every decision entails its own consequences. Join Arashi and his close ones as they confront these obstacles in an electrifying narrative.