If you are looking for more recent or similar "Young Mother/Stepmother" themed films, you might be thinking of these related titles: An Affair 2: My Friend's Step Mother (2017)
The film features a standard ensemble for this genre, including: Kim Na-yeon as the Stepmother/Hyun-ah. Mo-se Do as the son, Jingu. Joon-Hyun Lee and Han Jae-kyung in supporting roles. 18 An Affair Toung Stepmother 2025 Korean Movi...