Kōichi Kikukawa is being bullied in his class, and via an Internet message board one of his classmates named Shunsuke Morishita realizes that the person on the message board is actually Kōichi. Before long, Kōichi kills himself, and Shunsuke takes up Kōichi's previous role as the bullied. Shunsuke finally realizes what Kōichi had been going through and is finding it very difficult to go on living. One night while being bullied after school, Fumika shows up and delivers a letter from Kōichi to Shunsuke; in the letter, Kōichi tells Shunsuke that he wants him to suffer since he bullied him too along with the three other guys. After Fumika leaves, the other three guys go back to bullying Shunsuke, and in a moment of desperation, Shunsuke stabs one of them with a nearby screwdriver.
匿名掲示板でイジメられている人間のカキコミを見ている森下俊介は、学校生活の中で当たり前のように行われているイジメが随分とマシな物に思えていた。ところがある日そこにカキコミしている人物が、同じクラスでイジメを受けている菊川公一であることに気がつく。本人かどうか確認する森下だが、菊川から助けてくれと懇願される。そしてその現場をイジメグループに見られた森下は、イジメに荷担するよう脅される･･･
Koichi Kikukawa está siendo intimidado en clase ya través de un tablero de mensajes de Internet. Uno de sus compañeros de clase nombrados Shunsuke Morishita da cuenta de que la persona en el tablón de anuncios es en realidad el propio Koichi.
