In this adult stepsibling role-play, an awkward stepbrother hears that his bratty stepsister sleeps around. One day she catches him sniffing a pair of panties she left lying around. Instead of simply getting angry, she teasingly sits on his face and offers to let him smell her directly. His cunnilingus unexpectedly makes her cum, leaving the tsundere stepsister torn between embarrassment, frustration, and pleasure until she starts seeking him out and riding his face wherever she pleases.