When a bullying teacher from Katou Kiri's past comes to Kaimei Academy, he harasses the Sket-dan. But will the bully's actions push Student Council member/trained ninja Katou over the edge?
It became a pain in the ass, 
so I gave up on everything.
Luego me cansé y me rendí.
Fiquei tão de saco cheio 
que desisti de tudo.