Oresama Teacher volume 15 features story and art by Izumi Tsubaki.

Mafuyu is really happy to be a normal student going on a normal school trip. In her delinquent past, school trips were all about beating up on hooligans from other schools, so she's excited at the chance to relax and enjoy the activities. But it turns out her old rivals from West High are in the same town on their school trip! Will Sakurada ruin her cherished taste of normalcy?!