Lee Yong-jae studied economics at Yonsei University and worked as a newspaper journalist and stock trader. He won awards at the KBS Drama Screenplay Contest for his screenplay Professors (2012) and the Korea Creative Content Agency’s Korea Story Contest Story Awards and Festival for his screenplay The Rice Magnate (2017). He also wrote the screenplays for the feature films Secret Zoo (2018) and In Our Prime (2021). Ugly Duckling Ms. Maeng is his feature directorial debut.
From Busan International Film Festival 2026, No. 31