System of sin : Bullied return

He begged for mercy. They gave him pain. He looked for hope. They laughed in his face. Kaito Ren was the school's punching bag - humiliated, broken, discarded. When even kindness became betrayal, all that remained was the noose. But death was only the beginning. Now chosen by the system of sin, Kaito returns not as prey, but as hunter. For every bruise, they'll pay in fear. For every insult, in blood. They made a monster. Now it's their turn to scream.