In this adult stepsibling role-play, Karen became his much younger stepsister ten years ago. She has grown into a charming, capable adult who treats even her hopeless stepbrother with kindness, stirring a confused mix of love, jealousy, and insecurity in him. When she announces that she has a boyfriend, he loses control. Claiming she belongs to him, he drugs her with sleeping pills, uses her unconscious body like a sex toy, and repeatedly pounds her defenseless pussy full of cum. His obsession ends with him whispering that he loves her and wants her pregnant.