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"!
Everyone keeps makin' fun o' me!
¡Todos me siguen menospreciando!
¡Todos se burlan de mí!
Todo mundo fica 
tirando sarro de mim!