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"!
N-No, I'm okay by myself!
¡N-No, estoy bien por mi cuenta!
¡N-No, estoy bien por mi cuenta!
N-Não, estou bem sozinho!