College Girl's Red Diary

Ji-hyeon, who fell lonely because her husband went on a business trip, calls her husband's friend and calls her. Ji-seong approaches Ji-hyeon, who was drinking alone, and comforts her. In fact, Ji-seong, who wants to sleep with Ji-hyeon, slowly seduces her and takes her to bed.​

Seong-ae, who was innocent as a child, had her first relationship with Geon-woo, who was a jobless gangster in the neighborhood. Seong-ae, who was curious, opened her eyes to sex after having a relationship with her brother. As an adult, Seong-ae looks ordinary and plain on the outside, but perhaps because of her experience with her first man, her sex has become rougher since then. During her school days, she was tricked by her best friend, Yoo-ri, into stealing Geon-woo, and eventually, the two are now married. However, Geon-woo still meets Seong-ae from time to time secretly without Yoo-ri's knowledge and enjoys sex. Meanwhile, Yoo-ri also enjoys secret sex without her husband's knowledge with Myeong-jin, a junior at Geon-woo's company. Later on, Yoo-ri becomes tired of Myeong-jin, introduces him to Seong-ae as patronage, and tells them to enjoy sex. Seong-ae, who knows but is deceived, begins to expose the relationship between Gun-woo and Yoo-ri to the world.

Yeon-hee comes to Jin-woo with a smile and buys alcohol. Jin-woo Yeon-hee, who pretends to be bright, thinks it's strange, but it fits everything. When she finds out that Yeon-hee has broken up with her boyfriend, Dong-jun, her heart goes haywire. Yeon-hee, who is drunk with her, confuses Jin-woo with Dong-jun and kisses him, and Jin-woo is unable to push Yeon-hee, whom she liked in the past. Na-young knows that fact of her and confesses her own heart to her courage.

One day, Woo-hyeon's girlfriend Mi-yeong, who abandoned him, suddenly visits him. She only sees her anger towards Mi-young, but she cannot turn away from Mi-yeong, who looks difficult, and takes her into her house. However, she soon takes her heart and throws her away, but it gets harder for her. Then, Bora comes to Woo-hyun and comforts her. Confessing her heart...

Beautiful DJ Da-som hosts a late night visual radio show for adults. It's called One Night Radio. Listeners are treated to a unique episode about sex every night. With Da-som's calm progression, the real and hot story heats up the night.

Na Joo-ri and Ahn Joo-ri have been friends since high school. Two people with the same name but opposite personality, Jal-joo, a married women who enjoys free sex, and Ahn Joo-ri, who keeps her virginity before marriage. Yong-jin, who promised to marry Ahn Joo-ri, has yet to have sex. The frustrated Yongjin tries the first night with Ahn Joo-ri with the help of Na Joo-ri.

So-ri a lyricist wearing large headphones, visits the same space every day. The anticipation that her first love Jin who disappeared long ago after the accident, will return again. So-ri's wishes become reality. Jin is back again. So-ri and Jin hide their secrets about each other and start a deep relationship that they couldn't even imagine before.

Whenever she sees a messy kitchen, she calls her childhood friend Min-soo. Min-soo, complains in words but still brings side dishes to Seo-yeon. They're friends, but sex partners. Seo-yeon's relationship with Min-soo from their young age is natural. Min-soo is worried about Seo-yeon. He is jealous of the relationship between his younger friend Yeong-cheol and Seo-yeon.

Min-hyeok received a new tenant while using his house as a share house. One night, she finds Na-yeong sleeping on her front porch. Na-yeong entered the share house on the same day and the two sleep in the living room. Jin-woo came out after washing and Na-yeong woke up. Jin-woo has feelings for Na-yeong who is like four-dimensional... Meanwhile, Min-hyeok notices the strange currents of the two. Although Na-yeong knows Min-hyeok's feelings, he attracts Jin-woo to her room. The story of the dizzying love between two friends to take over a woman is just beginning.

Ji-eun, a Korean female college student who came to Japan to study, works part-time at a convenience store to pay for tuition and living expenses. The friendly store owner invites Ji-eun and Min-woo to his house. Ji-eun and Min-woo are forced to suffer between their mistress and her lover. From that day on, the mistress torments Ji-eun by revealing her true nature. Min-woo, who is worse than her, drags Ji-eun out of the convenience store and falls in love with her again.

Couple Hee-joo and Woo-seok, who are in good harmony with each other, become increasingly provocative sex addicts. Unknown to Hee-joo, Woo-seok offers watching sex to his senior Jong-gyu, and Jong-gyu gets a thrilling experience. After having a taste of "spectator sex" Jong-gyu secretly meets Hee-joo and his girlfriend Mi-seon and the three of them have sex.

Na-hee, who lives with Min-yeong, worries about her since she drinks too much alcohol and even stays out overnight once she goes out. Na-hee wakes up Min-yeong and fixes her hair as usual. When Min-yeong left early in the morning due to an urgent matter, Na-hee, who is left alone, spends his own time. If you enjoy masturbation, you will finally be able to have sex in front of Na-hee, who yearns for sex.

Jun-ho and Da-hee bumped into each other on the street. The two fell in love and confides with their friend Min-soo. Knowing that the two will miss each other, Min-soo spends his last sweet moment with Da-hee, his sex partner, and arranges a place for them to meet. The hot story of Da-hee's choice between two men who think that friendship is the most important, is just beginning.

Drunk Min-woo and Jae-hyeon attack Na-yeon's house. There, Jae-hyeon confirms that he likes Na-yeon. Min-woo secretly enjoys sex with Na-yeon, knowing that Jae-hyeon likes her. When she learns that he likes her, Na-yeon tries to use her heart... she is happy without knowing anything.

Manager Park, who sweats when nervous about his zero fashion sense, out of place glasses, and timid personality, secretly has a crush on the new employee Chae. However, Chae is the object of envy of all male employees. She is not approachable and overpowering. Manager Park collects his salary steadily and buys a dating app called Super AI, and started using it. He can receive VIP customer service by entering the picture of Chae and his desired body type. The woman who introduced herself as Ming-ki in the phone communicates perfectly with Manager Park on a completely different level from the other AIs. He enjoys dating with the AI all night long, and when he comes to work and meets her in person, he is confused.

But... we shouldn't do it. As Jin-goo's father suddenly leaves for England for a business trip, he stays in the same house with his stepmother, Ae-ran, who is still in an awkward relationship with him, but it is also uncomfortable to meet him at every meal. Ae-ran tries to take care of her son Jin-goo even if she's busy living every day as an English teacher and working part-time as a private tutor. She sometimes goes to work at night as if she had a part-time job. Meanwhile, Jin-goo often goes to karaoke rooms to meet Woo-mi, who is popular, thanks to the introduction of his senior in the neighborhood. One day, when that senior came home for a drink and encounters a huge fact, he turns around, revealing a huge secret and revealing their mixed erotic romance.

Private secret of Na-yeon and Min-woo, the teacher who teaches herself from old times! As Min-woo's grades go up a lot, Na-yeon invites him to her house for a special class. Usually, she is a calm teacher, but her personality changes whenever she touches her body. Meanwhile, Na-yeon had another student named Jae-hyeon, who knows the relationship between Na-yeon and Min-woo and is jealous, but only enjoys the current situation. A special private tutoring class for two students and a female student, which is secretly conducted, is just beginning.

Hyun-bin works as a chauffeur for Dr. Min-cheol Jang's house. The pay is high and the work is not difficult. Hyun-bin introduced her girlfriend Da-jeong at the request of Dr. Jang's secretary Soo-hyeon. Dr. Jang, a genius, regressed to a mental age of around 20 years of age due to a sudden shock three years ago. In particular, sexual repression has led to delusions of damage, and sexual misconduct is being expressed. Da-jeong jumped on in into the good news and good pay, and starts taking care of Dr. Jang...

Jong-tae and Eun-mi, were invited to the housewarming of Seung-gyu and Yoon-hee. Seung-gyu learns that his senior's business is almost on the verge of bankruptcy. Seung-gyu suggests staying together for a while to his senior who was vigorously frightened to avoid the debtor. After a few days, the couples get to drink and play a wish-making game. Seung-gyu, who won the game, offers a swapping offer...

A woman finds a man who looks just like her husband on a new business account, and a man who hurt his back while exercising with the woman he loves, and goes to the woman who likes him and gets a sex massage.