Takagi Atsuko

The main protagonist. Her father helps her and her sister move to a new town. There, she can finally live her dream of living in a large apartment and being a high school teacher.

Her first day as a teacher she's given an extremely cute uniform to wear. It's actually the cosplay outfit of a magical girl anime character named "Angel Ribbon".

Spoiler

What she doesn't realize is the town was created for the sexual pleasure of men and she has already been sold . . .