In Japanese folklore, Oni are evil creatures such as demons, ogres, and trolls. When the Oni (delinquents) at Onigashima High get unruly, Momo hires Otogi Bank to address the issue with the student council president.
Okami-chan was recently attacked
by the Onigashima boss, wasn't she?
Ookami-chan wurde doch neulich
erst vom Boss der Dämoneninsel angegriffen.