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"!
When Bossun puts on his goggles, his 
concentration level shoots way up.
Cuando Bossun se pone sus gafas,
Cuando Bossun se pone sus gafas,
Quando Bossun coloca os óculos, seu
 nível de concentração sobe demais.