Rena Uchimura

Two short stories set in Edo during the Shogun era. 1. During a time when Christians are persecuted vehemently, Iori falls in love with young Christian girl. When she and her family are captured during a raid, his sadistic master takes her as her personal slave to torment him, and tries breaking her spirit by means of rape, torture and pure sadism. 2. When Sutezo is forced to serve the cruel master of a brothel to repay his debts, he becomes friends with the young girl Sato. (imdb)

This weird mixture of period splatter movie and Japanese nunsploitation is about a girl called Omino, a young woman who flees from her master and ends up in a convent full of man-hating, murderous nuns. (bulletsnbabesdvd.com forum)