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?
So it's like, when I see 
you, I can't let it go.
Es por eso que me preocupo cuando te veo.
Então, quando eu te vejo, 
não consigo deixar para lá.