Inbō no yoru: Kurikaesu masayume

淫暴の夜　繰り返す正夢

Also known as Inbô no yoru: Kurikaesu masayume, Kindan shimai: Aiyoku ni mamireta onna-tachi, Watashi mitai na onna: Aiyoku shimai, 私みたいな女 愛欲姉妹, A Woman Like Me : Lust Sisters

Mizuki, born as conjoined twins, works at a hospital, but the director, Sato, takes advantage of her weakness, as she needs artificial dialysis, and makes Mizuki his mistress. However, Sato's wife, Mikayo, discovers his infidelity.