Young Casanova (1974)
Young Casanova bangs women, including unsatisfied hot wives, left and right and gets paid for it.
foursome
Fiendish – Diaries of Breaking Mother and Sisters (2013) aka Kichiku: Haha Shimai Choukyou Nikki
A fat, nerdy, pharmaceutical student uses his knowledge to drug his aunt and two cousins so that they will submit to him sexually.
Mistreated Bride (2005)
A wife lives with his husband’s family and gets fucked by her father-in-law and brother-in-law. The brother-in-law also gets to fuck his father’s third wife (aka his stepmom).
IPZ-449 Please Fuck My Wife Mayu Nozomi (2014)
A husband lets other guys fuck his wife while he watches. First, the guys screw her individually and on different days. Then later, all four of them screw her at the same time.
Shared Wives (2012)
Two couples – Will and Mindy & Gabe and Karla – plan to have a foursome. But Mindy and Gabe decide to go ahead first without telling their spouses, which complicates things. From New Sensations
Immoral Wife (2005)
A wife thinks that all her sexual perversions and promiscuity is all behind her when she got married. But a friend of her husband who comes over for a drink will prove her wrong.
Sex Games for Couples (1976) aka Fantaisies pour Couples – France
Two couples are cheating with each other’s spouses before having an official wife swap.