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? Paint? Don't scare me like that, man...
¿Qué? ¿Pintura? No nos 
asustes de ese modo...
¿Qué? ¿Pintura? No nos 
asustes de esa forma...
O quê? Tinta? Não me 
assuste desse jeito, cara...