"Already... I climaxed ahead of time again..." Every day, Ayame engages in masturbation while suppressing her voice, unsatisfied with the brief sexual encounters with her husband. Her nights, too bland, are on the verge of an explosion of dissatisfaction. At such a time, she accidentally sees her brother-in-law's penis. "Come to my room..." Ever since she saw her brother-in-law's lower body, Ayame has been fantasizing about him. Climaxing with a powerful thrust from her brother-in-law's huge penis! Forbidden raw sex!