Sister's Diary

Joon-goo is an innocent man in his 30s. He quit his job and runs a small BBQ place with his young and sexy wife, Mi-ri. Then one day, Mi-ri's sister, Na-ri, comes to their house. Na-ri is in her mid-20s. Joon-goo feels attracted to Na-ri who is calm and considerate, unlike minx Mi-ri. The two end up crossing the line after a small happening...

Mi-yeong's boyfriend, Joon-cheol, works at a meat restaurant. On the first day, he is shocked by how Mi-yeong's youngest aunt, Seo-yeong, was so young and sexy back in the day. He captures Seo-yeong's attention, as he's so good at his job. Then one day, Seo-yeong and Joon-cheol have a drink after work and Seo-yeong seduces Joon-cheol, who she's been eyeing for a while...

Aspiring scenario writer Yeon-hee uses the nickname Pink Band to write R-rated scenarios. She's famous for her far-out work. Her ideas come from her best friend Joo-yeong's sex experience. However, Yeon-hee herself is a virgin, so she dreams of a romantic and ecstatic first sex that is unlike her scenarios.

A young man grows up with his older cousin who is like an older sister to him. When he grows up, he goes to visit her at her home where her friend is also visiting. The three of them under roof make for some interesting circumstances.

Virgin Ji-woo goes ona trip with Hye-ri who promises to give her a sex education. Ji-woo's mission is to sleep with a man she meets on vacation.

Because of Eowoodong the men in the neighborhood can’t sleep at night! Eowoodong escapes before she can be arrested for causing havoc. She escapes to a village where she falls and loses her memory. A bachelor in town finds her and nurses her back to health. He tells Eowoodong to stay with him until she regains her memory. But in a small village, word of Eowoodong’s beauty spreads quickly and it scintillates the instincts of the men in town.

An accountant visits her daughter who is secretly living with her boyfriend who is a fraud. She is surprised by what she sees and hears. Soon, a dangerous cohabitation begins with her daughter's lover.

When two men discover that a girl they've been chatting up is a virgin, they take it upon themselves to help her out.

Choong-heon, who is about to leave for the army soon, drinks away his sorrows with Geon-woo. On the way home, he finds Jeong-in, who is sleeping on the street, and takes her back to his house. The next day, she thanks Choong-heon and buys him breakfast. Then she tells him what happened. Apparently, she passed out after drinking out of anger for her friends teasing her that she's a virgin, and she asks Choong-heon to be her first experience after all he's done for her.

A Joseon gisaeng time travels to 2017 Seoul.

Won-jin is sent into a nearby region suddenly by the company. He is unprepared when he goes down so he calls his friend Chang-hoon who lives there. Chang-hoon lets Won-jin stay at his house for the time being but Won-jin gets to thinking. The reason is, Chang-hoon's young wife Soo-yeong has a history with Won-jin. However, Won-jin decides to go to Chang-hoon's house to see Soo-yeong. Chang-hoon just happens to leave the house for a while and Won-jin meets Soo-yeong's glamorous friend Kyeong-hee who is also living there. Won-jin starts living with Soo-yeong and Kyeong-hee who starts seducing him.

Thanks to her wealthy father, Yoo-jin runs a coffee shop. One day she runs into childhood friend Mi-ae on the streets and they have a good time catching up. Mi-ae is currently unemployed and helps Yoo-jin at the coffee shop. Min-soo stops by the café to see his daughter, but realizes he feels rather too fond of Mi-ae, who welcomes him.

After graduating from college, Minji, whose goal is to meet and marry a man with a lot of money rather than a job, spends more time in the club than in the library and lives every day. One day, Min-ji pretends to know a man he doesn't know at a convenience store . Tae-soo's father, who failed in business, left himself and his mother and fled, and the mother who had struggled to build a home alone died of cancer three years ago. Min-ji is starting to live together because Tae-soo is now unhappy, saying that she is living hard at the Gosiwon in Seoul alone.

A ticket war between sexy girls! There is a ticket coffee shop in a small town. Kang Cherry is the most popular girl here. The town men are desperate to get their tickets with Cherry everyday. However, Cherry doesn't easily give into them and she's haughty. One day, Moon-sik moves into the town to live a quiet life. Cherry recognizes a man with money right away and tries to seduce him. Moon-sik who visits the coffee shop out of curiosity falls for Cherry right away and can't seem to get enough of her...

CEO Seung-tae is in an affair with his sister-in-law So-young who works for him. One day, a rookie named Young-chul finds out about them and threatenens So-young that he'll tell the CEO's wife about them and spends anight with her. He continues to threaten and bully her. So-young is scared that her affair with her brother-in-law will cause trouble with her half-sister Hye-sun...

Freshman college students turned friends, Jang-hee and So-hyeon, will be having their first blind date. Jang-hee and So-hyeon met Won-ho andDoo-sim through a blind date over drinks. Doo-sim, a sophomore asks Jang-hee and So-hyeon to call him 'oppa', however Won-ho teases him that he is younger than them. Jang-hee who is older than Doo-sim, jokes him to call her 'nuna', and then...