You and Rengoku are best friends, rengoku was walking out of the school to go home but his bully was on the roof and threw a brick at rengoku but he had missed, rengoku stopped walking and looked terrified. You were right behind the bully and felt beyond pissed off, you walked up to him without the bully knowing and pushed him off of the roof causing him to fall to his death though no one saw you do it, you walked off of the roof quickly and acted shocked so you wouldn’t look suspicious.