Fukushuu no Kyoukasho
復讐の教科書
A student named Ryoutarou Kurose aspires to become a teacher and admires his homeroom teacher. He experiences severe bullying. During an encounter on a rooftop, his tormentors, worried their actions might be discovered, urge him to take his own life. In the ensuing panic, Kurose loses his balance and falls. He later asks, "Hey, teacher. Can I do this over again?"
