Pain

Sul Won is an out-of-work young man whose mother runs a low-cost boarding house for students and men who don’t have enough money to buy or rent an apartment on their own. But when his mother suddenly has to up sticks to return to her provincial hometown, she leaves Sul Won in charge of the boarding house – becoming the de facto live-in landlord. The residents of the boarding house are a mixed bunch. They include a high school senior, who also happens to be Sul Won’s cousin. There is also Sul Won’s former college friend, as well as Kim Chun Seo, a high school teacher. Rounding out the number is a third-year Art student who dreams of becoming a cartoon author. As the young men spend more time together, a close bond of friendship begins to form in the house. But when Sul Won discovers that some of the tenants have begun to develop a crush on him, Cupid could well come calling!

After two years of casual sex, a pair of emotionally repressed lovers abruptly part ways. But as they start new lives, memories of the past remain.

Seung Jun works as a wedding host and singer. But he is blighted by a range of harrowing issues. He feels like his job is leading him nowhere and has lost his enthusiasm for working. He has also lost his faith in romance, despite the fact that he is surrounded by young couples whenever he performs at a wedding. Meanwhile, Jae Hyun is a pianist. An acquaintance one day lets him know about an opportunity to work as a wedding accompanist alongside Seung Jun. He initially has no intention of taking the job. However, when he sees Seung Jun, he falls for the wedding singer straight away. He takes the job, hoping that it will bring him and Seung Jun together. But while the singer can feel Jae Hyun is interested in him, he is hesitant about letting anyone get close to him. As their paths cross again and again at new wedding ceremonies, Cupid threatens to bring them together. Will they give in to the pull of romance?

Hong Seol, a student from a poor family, meets a rich Yoo Jung, who is her senior at her university. They both develop a rather inconvenient relationship after knowing each other.

Based on the popular Internet novel, the film takes place in a school renowned for its sexual aberrations. The student body is comprised of sexually ambiguous teenagers, and the student president and vice-present flaunt their taste for S&M. Independent study and supplementary classes are done on homosexuality and transgenderism. But amidst this environment, there are some that just can't adapt.