YSN-598 My new stepsister is a fucking monster, but my boner won't quit. Amami Ichika.

Recently, a new member of the family, my stepsister Kazuha. At first, she was quiet and seemed like an adorable little sister you could find anywhere, but gradually her true nature began to show. After discovering that playing with her brother's penis helped relieve her stress, she not only performed oral sex but also used her tight pussy to squeeze his hard cock, repeatedly bringing him to the brink of orgasm before stopping, delighting in her sadistic behavior. She was a truly cruel stepsister.