Oriha has a little mission in the girl's locker room.

Two highschool friends are giving the "luxury" of taking a trip to Tobioka City, where they expect good times and relaxation..they are unfortunately mistaken. Tobioka City is known for having the highest crime rate in the world, ruled not by government but by those who work in the shadows. Unprepared, they will have to find a way to survive this nut house until they can leave it.