Nun in Rope Hell (1984)
After being caught in a tryst with a lover a woman decides to retire to a nunnery Once there she discovers that the nuns and a priest are planning to engage in a number of bondage and discipline orgies
Dabide no hoshi Bishojo gari (1979)
Spurred by a fascination with Holocaust atrocities and his rapist biological father, a wealthy student secretly abducts and subjects women to acts of sexual torture