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?
All this time, I've been raised by kind 
parents and lived a comfortable life.
Mis padres siempre fueron buenos conmigo 
y he vivido una vida confortable.
Eu sempre fui criado por pais carinhosos
 e tive uma vida confortável.