While being anally penetrated, I endure relentless orgasm denial handjobs. My balls are crushed, my body whipped and seared with candle wax. Withstanding dirty talk torture, my prostate is stimulated nonstop, and despite my girlfriend being nearby, I'm helplessly forced into continuous ejaculation by the sadistic older sister until morning. As her obedient, perverted submissive pet, I begin my path as a sex slave. "Your cock is so rock-hard... what would your sister think if she found out?" I writhe in shame and unfamiliar pleasure, a despicable man tormented all night by an insatiable dominant woman, living out a dream-like reverse NTR fantasy.