So-young Ko

A North Korean diplomat defects to the South during the Dold War, but the South Koreans have their suspicions as to whether he is an actual defector or a double agent. (imdb)

This movie follows the story of three friends in Korea, all three of whom drop out of school. The main character is Min, a tough guy whose widowed mother is a drunk. The story traces his journey from high school to the underworld as one of his friends introduces him to life in the mob. Complicating Min's life further is his romance with Romi, a girl from an upper-class family with dreams of going to a prestigious college. (imdb - Peter Kim)

Se-jin, a young woman who lives in an old apartment in a Seoul suburb, amuses herself by observing the windows of the apartments on the other side. One day, she notices that the lights of some of these apartments are turned off at the very same time. She begins to suspect that this pattern is somehow related to a series of mysterious deaths in the neighborhood. She becomes more and more deeply involved as she attempts to solve the mystery. (imdb)

Beom-soo is a traffic control officer who aspires to become a baseball umpire, he meets Hyun-joo, a theater major who crashes her car while he is on duty. Instead of fining her, he gives her driving lessons and they become friends. When they next meet Beom-soo declares his love and she rejects him.Three years later, Beom-soo is making his debut as a professional baseball umpire, and his love is reignited when he realizes that an up-and-coming actress is none other than Hyun-joo. (Wikipedia)

Tae-Hee is a working professional living with his father, whose illness caused the break-off of his wedding. He takes a sudden vacation to Cheju Island for five days before deciding whether to accept an assignment overseas. Upon his arrival , he runs into Young-seo, a local tour guide, whom he aids in capturing a pickpocket. Eventually, Tae-hee asks her for a private tour of the island. They cover every nook and corner of the island as if they were two old lovers revisiting their first... (hancinema.net)

Young Hee has lead a comfortable and financially secure life as an upper middle class housewife. When her husband passes unexpectedly after his business fails, Young Hee must find a way to support herself and her four children. (imdb)

An unhappy woman goes back in time and poses as her cousin to prevent her younger self from making the same mistakes and ruining her future.