Blood Sakura (2019)

A cruel travelogue that takes place in Kokura, the hometown of Japanese mystery novel master Matsumoto Seicho. A cinematographer named Oh Seong Gil is the only survivor from the ‘Highway 32 Taxi Murder’, in which a whole team of filming staff disappeared. He survived thanks to a miracle, and he has been collecting evidence and witnesses to look for the culprit and make a movie out of his materials. Meanwhile, Seong Gil is tipped off by a mysterious woman and heads to Kokura, where she currently lives, right away. Her name is Yoon Seul.

Unfortunately the movie Blood Sakura is not yet available on HBO Max.