Adult role-play. While he is making out with his girlfriend at her house, her older sister suddenly comes home—and he recognizes her as miru, the porn star he constantly watches. When he quietly asks if it is really her, she becomes awkward; apparently her family knows nothing about her career. She offers to make him feel good if he keeps her work secret, and he instantly agrees. His fantasy comes true as his favorite porn star rides him in real life and gives him the most intense hands-free orgasm he has ever had.