Kim was born in 2000 and debuted as a child actor in 2009, with appearances in the 2010 action film The Man from Nowhere and the 2012 thriller The Neighbour.
Kim Sae-ron's cause of death has been reported as suicide following the South Korean actor’s death on Sunday.
Tributes poured in for Kim on social media, with one fan writing: “This is truly heartbreaking news.
However, much of her screen time in the series was reportedly reduced in the wake of a drunk driving incident in May 2022.
“I am also very sorry to the production crew, including fellow actors and staff, for interrupting the production of the work that is being shot and the work that was being prepared.