at first glance, arashi mikami appears to be a normal, albeit socially awkward, 17 year old high school student. however, he's actually part of a secret vigilante organization known as black label, a group dedicated to executing power-hungry criminals the law refuses to deal with. unfortunately, taking down a crime lord isn't always an easy task, and there are bound to be consequences for any action… this is the action-packed story of the trials of arashi and the people close to him.