While there isn't a widely recognized major theatrical release titled 18 An Affair: Young Stepmother

, which is a family-oriented fantasy drama about a 37-year-old man who returns to his 18-year-old body. streaming platforms where films in this series are currently available? An Affair: Young Stepmother (2018) - IMDb

The most exciting frontier for blended family dynamics is the dissolution of the traditional parenting binary. Films like Spoiler Alert (2022) show a man, Michael, who must blend his grieving process with his dying partner’s estranged parents. Bros (2022) features a brief but sharp look at how two gay men might blend their lives, including the complexities of co-parenting with a sperm donor.

The affair begins in secret. It is a dangerous game of risk and desire. Every touch is a rebellion against the Chairman. Min-ji feels guilty, yet alive for the first time. Jin-woo feels like he has finally taken something back from his father.

If you are looking for other films with similar themes, you might find these on sites like An Affair: Young Stepmother (2018) - IMDb

Video on Demand (VOD)

While "2025" might refer to a recent upload or a re-release on streaming platforms, there are no major theatrical releases by this exact name confirmed for 2025 as of now. Such films are typically released directly to or specific Korean adult streaming platforms. An Affair: Young Stepmother (2018) - IMDb