"It was supposed to be fun with her..." My girlfriend's sister accidentally drinks the drink laced with aphrodisiac, leading to a sudden twist! A perverted monster is born as she takes advantage of my girlfriend's absence to seduce me! She forcefully strips me and inserts herself! Seeing her sister, who shows no signs of stopping even after multiple rounds, I truly feel the effects of the aphrodisiac! Awakened and tireless, her sister goes from morning till night with endless internal ejaculation! Her body tries to expel the aphrodisiac, and I end up climaxing from the gush of semen!
