Noribumi Suzuki - Ero Shogun to 21-nin no Aisyou AKA Lusty Shogun's 21 Dolls (1972)

A new Shogun rides into town but instead of taking care of his administrative duties he just gets laid. A lot.

Masaru Konuma – Wife To Be Sacrificed (1974)

Hisayasu Sato - Rezubian reipu: Amai mitsujû AKA Lesbian Rape: Sweet Honey Juice (1991)

Quote:
A love & rape triangle between two female coworkers (Mastuda and Ako) and a "gun rapist" (whose silencer is made of a tube test ^^).
Matsuda can not wait to get married and have child, Ako is infuated with Matsuda, and the "gun rapist" has feelings for Ako.
Bad things are bound to happen...