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"!
Well, I know who you are already...
Aunque ya sé quien eres.
Aunque ya sé quien eres.
Bem, eu já sei quem é você...