Seijuu Gakuen: Ingoku-hen

After a girl’s mother joins a convent and mysteriously disappears, she decides to enter the convent herself to try and get to the bottom of what happened to her. Formerly a juvenile delinquent, she has to rely on all of her street-smart to survive in the nightmarish convent. Soon after joining, she is exposed to a culture of flagellation, sexualised corporal punishment and a lesbian mother superior. She has to constantly fight to survive, but the worst is yet to come when the bishop visits – a depraved man who after feeling that god has abandoned him decides to take out his hatred on the female members of the church.