Teppei just transferred into Kaimei Academy, and he's pressured to join the Sket-dan by his classmate, Bossun. Then, one day, Teppei is attacked by a mysterious masked paint chucker, "Paint Mask"!
What the hell are you doing?
¿Qué demonios haces?
¿Qué demonios haces?
O que você está fazendo?!