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?
That scary face will have the 
opposite effect, Tsubaki-kun.
Con esa cara tan seria terminarás 
alterándolo, Tsubaki-kun.
Essa sua cara assustadora vai gerar
 o efeito contrário, Tsubaki.