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"!
I... I lied to my friends...
Le... le mentí a mis amigos.
Le... le mentí a mis amigos.
Eu... Eu menti 
para meus amigos...