Adult role-play. Aya is an old classmate and childhood friend—a gorgeous gyaru who was always far more popular than her nerdy host. Just when he assumes they will never speak again, she asks to use his room because of trouble at home and offers a deal: lend her the room, and he can have sex with her whenever he wants. He cannot stop pounding her after this unbelievable stroke of luck, but Aya has one unexpected quirk in bed.