復讐の教科書

教師になることを夢見る黒瀬陽太郎は、担任の白鳥先生に憧れながら、凄惨ないじめを受けていた。Yotarou Kurose dreams of becoming a teacher, looks up to his homeroom teacher Shiratori-sensei and is subject to gruesome bullying. One day, fearing their actions have been exposed the bullies tell Kurose on the rooftop, Before we get found out, why don you kill yourself? Terrified of what was happening Kurose loses his footing in the commotion and falls... Hey, teacher. Can I do this over again?