Based on the phrasing, this likely refers to a (possibly from Nigerian Nollywood, Ghanaian cinema, Indian regional cinema, or a streaming platform) that falls under the drama/thriller genre exploring infidelity, family betrayal, and seduction.
are handled in mainstream erotic thrillers or the evolution of the forbidden romance genre
The Seductive Allure of a Sister-in-Law: A Glimpse into Her Lifestyle and Entertainment
Several titles with similar themes were released or gained traction in 2024: TS Sister in Law 2 (2024)