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"!
Ma-kun, I'm scared!
¡Ma, tengo miedo!
¡Ma-kun, tengo miedo!
Mazinho, estou com medo!