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?
She's Onihime from Aoba Middle School. 
How many people do you think she's hurt?!
Ella es Onihime de la secundaria Aoba.
Ela é a Onihime da Escola Aoba.