ester's manga / #Secret Identity(2)

(Action) Ikuo Ryuuzaki and Danno Tatsuya are 2 orphaned boys who were looked after by a man they called "sensei" know that the police covered-up and concealed. Following their sensei's brutal murder, the two vow to hunt down his killers and the police officers who neglected to properly investigate the case. Now 15 years later, Ryuuzaki became what he hate most a police detective and Tatsuya has become the leader of a group of mobsters. Helping each other out behind the scenes, they strive to rise to the tops of their respective fields so that they may exact their vengeance. Along the way helping people in trouble in and outside the Law the brothers on Opposite sides of the Law.. "Twin Dragon Ouroboros"