僕たちがやりました

Tobio is a passive high schooler who makes a rule of never hoping for much, drifting through easy days with his friends Maru and Isami and with Paisen, a rich twenty-year-old who graduated years ago and never really left. When Paisen buys explosives to get back at a rival school's delinquents, the four slip in at night in animal masks to plant them, and the blast sets off propane tanks and kills several students. Muneyuki Kaneshiro and Hikaru Araki follow the four as each carries what they did.