Come to My Bedside (1975)
A wife leaves her husband because of his sexual demands, gets into a lesbian entanglement with a woman, and then a threesome entanglement with the woman and another man, and now comes back to her husband with an open mind.
threesome
Hidden Passion (1991) – Hong Kong
A housewife bangs her young neighbor and has a threesome with her husband and niece.
Nothing to Hide II: Justine (1993)
Justine takes a lover, not knowing that he is her boyfriend’s father.
7 Sex 7 (2011)
A guy tricks a girl who got lost in the woods into having sex with him under the pretext that a nonexistent tick will pass from her vagina on to his penis. The girl’s bf calls her while he is screwing her against a tree. Plus, a girl cheats on her bf just minutes before they have a date.
The Tale of the Dean’s Wife
A group of rebellious students, who practice free love and anarchism, tries to get their conservative dean to give in to their demands. He refuses, but his nymphomaniac wife is willing. Things end in tragedy for some.
Countdown Conjoined
A chick has a threesome with her boyfriend’s son and a female she met on a bus. Also, a female student and her mother have sex with her female professor. Years later, the professor screws the female student on her wedding day.
Enbi (aka Beautiful)
Kentarou’s married aunt comes back to town and gets it on with several townsfolk, possibly including Kentarou himself if he’ll be a good boy.
Same Time Every Year
Three husbands have a routine where they go away together each year to what they tell their wives is a business convention but is actually a sex resort. What they don’t realize is that their wives aren’t exactly sitting around doing nothing while they’re gone.
Elite (TV Series) (2018)
A rich, teen couple involves a poor but ruggedly handsome classmate in their relationship. Plus, a guy screws and impregnates his younger brother’s girlfriend.
Kisaku The Letch
A wife gets graped in her home by a masked man. Later, she discovers that the masked man is in the company of her husband at a party. But instead of telling on him, she comes with him to an isolated spot and screws him willingly.