Historically, cinema leaned on the "evil stepmother" archetype. Modern films like Stepmom (1998) or The Kids Are All Right

: Recent research shows that viewers now perceive stepfamilies in a "nicer light" as divorce becomes less taboo, with over 75% of recent family films depicting warm, supportive interactions. III. Key Dynamic: The Struggle for Role and Identity

The specific keyword phrase you provided refers to a video or series within the popular "step-family" trope, which has become a dominant theme in adult content over the last decade.