Movies Similar to The Youngest Sister-in-law

Apartment Wife: Adulterous Love(2000)

Two wives who leave their husbands behind and go on a hot spring trip, and two husbands who play homosexual games because it's not fair for them to be the only ones enjoying it. In contrast to the wives, who warm each other's bodies with hot water and lesbian play, the husbands cool each other's bodies by facing each other naked on a dark table with a bottle of sugar. There is another couple in danger of getting married because their parents disapprove of their relationship, but these two also change their mind, saying that marriage is between them. The story focuses on the liberation and change of consciousness of these three couples, who audaciously kiss on the street to get warm, and rethink their love and freedom.

착한 엄마 2 무삭제(2018)

Good Mom 3(2020)

An erotic film about a mother and her son in-law.

A Lusty Wife's Double Life(2017)

An average office worker marries a young wife with whom he is smitten. While he's away, he wife likes to play with her friends.

Inside Wives' Affairs(2017)

Chatting wives dissatisfied with this husbands find love and comfort in each other's husbands.

My Wife's 101st Marriage(2018)

A man signs onto a contract marriage.

Good Mother: Coveting My Father's Woman(2019)

20 year-old Hyun-yi falls in love with his 40ish female boss, Sook-hee who is his father's long time mistress. But who is she indeed?

Living with My Cousin(2017)

Hyun-woo, an engineering student, and Ji-yoon, an aspiring writer, have been close friends since childhood. They begin to grow closer as adults and have a sudden realization that their relationship has changed.

Mother's Lover(2018)

A college student keeps secrets. One is that she regularly sleeps with an older lover. The other is that she's attracted to her mother's personal trainer, which she decides to do something about.

Schoolmistress 3(2020)

Ji-eun decides to become a tutor for Sang-woo's son, Sang-woo, in order to make sure he has a rich boyfriend. When tutoring begins, Sang-woo, who was kicked by her older sister Hye-ran, is attracted to Ji-eun, who kindly teaches herself. One day, Sang-woo witnesses the love affair of his father and Ji-eun, and falls into a sense of loss. Meanwhile, Ji-eun overhears Ji-eun's conversations with a friend, and notices that Ji-eun's only goal is to meet her. In the end, Ji-eun notifies Ji-eun. Ji-eun arrives to attend the last class, and because of her appointment with Sang-woo, she eventually gives up her body.

My Friend's Sister 4(2020)

Minsu quits the company if he takes it because he is far from home. So, as a special measure, I will stay at my friend's house for a while. Min-soo falls in love with Jae-seok's older sister Yoon-jung at first sight. Meanwhile, Jae-seok decides to start living with her girlfriend Hae-ju at home. Min-soo and Yoon-jung are alone, and love grows...

The Story of the Expedition Woman(2019)

So-yeon is on a weekend date with her boyfriend, Ji-seok, and then she invites him to her house to save money on the motel. Her step brother, Sang-woo, comes home earlier than expected and sees them having sex. He records them secretly and plans to blackbail So-yeon with it.

Watcher Girl(2019)

Mi-na enjoys rough sex and she's currently sex partners with Woo-yeong, who she met on a one-night-stand. Mi-na's best friend, Jeong-hee, coincidentally witnesses Mi-na having sex and opens up to a new world. One day, Jeong-hee is invited by Mi-na to watch her having sex with Woo-yeong...

Observation Man(2019)

Newly married couple Eun-mi and Seong-soo look ordinary, but they both have their own secrets. Eun-mi enjoys calling her boyfriend to her home while her husband is away on work and Sung-soo enjoys watching his wife have sex with other men through the CCTV in his house. Not being able to get over the excitement he feels by doing that, he tells his wife everything and suggests she has sex with another man again...

Young Mother's Friend(2018)

After Jae-won goes back to school, he can't find a place to stay so he ends up renting out a room in his mother's friend Hee-jae's house. Hee-jae's daughter Yoon-young has grown up to be a mature young lady. One day, Yoon-young uses school exams as an excuse to stay over with her boyfriend and Jae-won brings his girlfriend to the house. Hee-jae thinks something is going on and interrupts. Meanwhile, Yoon-young is not entirely happy with sex with her boyfriend and has other thoughts when she sees Jae-won. She starts seeing him as a man. In the end, she calls him to her room in the middle of the night...

Lady's Tasty Sex(2018)

In dreams, a promised couple meet and fulfill their promise of a perfect wedding night.

Wanted: Girlfriend(2024)

Sheina Yu and Reina Castillo date a man who likes to have sex anytime and anywhere. See who can keep up with his strong sexual appetite and be his girlfriend.

Schoolmistress 4(2021)

Min-woo solves his sexual partner Yu-ri's financial troubles, and Sam-su-ha hires Yu-ri as Min-seok's tutor on the condition that he keeps his relationship a secret from Min-seok for the sake of his younger brother Min-seok's math grades. Min-seok gets excited when Yuri, who looks sexy his age, starts tutoring him, and he dreams of having sex that night. Meanwhile, Yuri doubts that Min-woo is dating another woman, but when she learns her door code while attending tutoring, she sneaks into Min-woo's room late at night to confirm. Yuri, delighted to see Min-woo sleeping in her room without having an affair, wakes up sleeping Min-woo and gives her a special service.

Daughter's Diary(2020)

Young-hee invites her boyfriend, Geon-woo to her home to introduce to her mom. Her mom’s boyfriend also came and the four of them get together and have a meal. After a few days, Young-hee’s mom accidentally found out that Geon-woo went inside a motel with another woman.

Swapping Guest House(2018)

A young couple travels to a guest house run by another couple. The allure of this place is that it can arouse the sexual fantasy of new couples through swapping partners between the guest couple and the couple who runs it.