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's being covered in a little paint?!
¡¿Qué tanto es ensuciarse 
con un poco de pintura?!
¡¿Qué importa ensuciarse 
con un poco de pintura?!
E daí ficar com um 
pouquinho de tinta no corpo?!