Eomung (2019)

This is the story of Sook-ja (Moon Hee-kyung), a female diver in the beautiful Jeju Islands who has lived a tough life, and her childish son Yool (Yeon Joon). Young man Yool dreams of becoming a writer. One day he discovers his mother, Sook-ja, has terminal cancer, but she refuses to get treated and continues diving in the water. Yool gives up his dreams as a writer and goes to his brother-in-law to ask for a job just so he can change his mother's mind. One evening, Yool comes home drunk and upset. Sook-ja can't bear the sudden pain and wakes up her drunken son.

Unfortunately the movie Eomung is not yet available on HBO Max.