I'm obsessed with my stepsister, who was born from my parents' remarriage, to the point where I rummage through her underwear and keep track of her masturbation frequency and menstrual cycle. This home stalker behavior got caught by my stepsister! If she reports it to our parents, I'll be kicked out of the house and won't be able to see her again! Just thinking about that made my pent-up desires spiral out of control! I licked her breasts and pussy non-stop, forced her into blowjobs, penetration, and even internal ejaculation... I kept internally ejaculating in her during her fertile period. Gradually, her resistance weakened and she started to feel it, which made me happy. So, I gave her a relentless 13-shot internal ejaculation!
