Through the recommendation of a rich stud backing Aoi's father's loans, this babe enters a boarding school. However, the school is truly a place where the young beauties are trained to the likings of buyers, and then sold! Aoi is a member of the 1-A (anal) In this the cuties are left as virgins and trained in the arts of anal so that their assholes become capable of any of sexual play. Disgusted by the Aoi, together with her Maho, slowly become prisoners of anal oppression.