My stepmom’s jaw dropped. So did mine.

In OopsFamily , Maddy doesn’t save her stepbrother because she loves him in a saccharine way. She saves him because:

A nod to the pervasive "step-sibling" genre which has been the leading category in adult entertainment for over a decade. 2. The Rise of Narrative-Driven Adult Content

Humans evolved psychological mechanisms for kin recognition (e.g., co-residence duration). Because step-siblings often co-reside during critical developmental windows, the "kin recognition" systems may misfire, treating the step-sibling as genetic kin. Thus, the Stepbrother feels a biological imperative to help, even if the genes do not match.