In this adult sibling role-play, Ema learns that her brother has his first girlfriend and suddenly turns possessive. Reminding him of their childhood promise to stay together forever, she begins controlling every part of his life. She claims his cock belongs to her, eagerly sucks it, watches his face as he approaches orgasm, and demands to see even more pleasure. Then she tells him to stay still as she takes him inside. Her obsessive love drives her toward increasingly unhinged behavior—and then…