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?
I can't do anything on my own! You 
have to do something about it, Sensei!
¡Yo solo no puedo ayudarlo!
Eu não posso fazer nada! Você precisa
 fazer alguma coisa, professor!