My New Stepsister Is My Ejaculation Manager

After our parents remarried, my cute high-school stepsister in uniform decides to become my personal ejaculation manager. Determined to break my masturbation habit, she uses her tempting body and sticky techniques to keep my urges on a strict leash. From shy guidance to full-on creampie cowgirl sessions, her relentless training keeps the pleasure building—leaving me completely addicted to our taboo live-in life.