The younger brother fantasizes about his clear-cut, busty sister, but when he forces her to drink a love potion, she transforms! Sweat, love juices, and drool gush out in abundance as she becomes a lewd woman! She eagerly bites onto her brother's penis and rides him, inserting it raw! With her heavy, large breasts and big buttocks shaking, she sprays spittle while convulsing repeatedly to climax! Ignoring her brother's attempt to escape, she presses on, forcing him to ejaculate multiple times into her vagina until all the sperm accumulated in his testicles is completely drained!