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"!
So, when Jougasaki was in elementary school,
Así que, cuando Jougasaki 
estuvo en la escuela elemental,
Bueno, cuando Jougasaki 
estaba en primaria,
Então, quando o Jougasaki
 estava no ginasial,