Kim Joo-ryung

Roommates Yoo-jin, Eun-soo, Bo-ram, and Da-young are cramming for a college entrance exam. It's difficult for them to adapt to the stifling atmosphere of the women's lodging institute - and to get along with each other due to their differing personalities. Yoo-jin begins to have visions of events that took place at the institute in the past and gradually becomes consumed with fear, and the relationship among the four intimate friends begins to suffer. (imdb)

When a boy falls to his death at school his twin sister, Ok Chan Mi, does not believe that it is suicide. She transfers to Yongtan High, the school in question and meets a witness to her brother's death. When a bully-hunter also shows up at the school, Chan Mi suspects that it may be connected to her brother's death, and looks for this potential ally. (disney+)

Min-Woo is a journalist who lives in the apartment of a woman who died in a car crash. Min-Woo has examined the car wreck and slowly becomes obsessed by the woman's past, also because her personal belongings were never retrieved by family. (imdb)

A former model student, pushed by domestic abuse and bullying, joins a group that stands up to school violence and defends its victims.