She got recognition for her supporting roles in Boys Over Flowers (2009), Shine or Go Crazy (2015), and Twenty-Five Twenty-One (2022).
She has acted in films such as: The Piper (2015), A Man and a Woman (2016) and Psychokinesis (2018) among others.
[4] Kim Young-sun is affiliated to artist management company Hunus Entertainment since February 2022.
[5] It was her childhood dream to become an actor, so Kim acted in Busan Municipal Youth Theater since her middle school days.
In beginning she was majorly active in the theater and stage but later on she appeared in TV series and films.