Ema was getting a little tired of her husband's special fetish and was beginning to feel frustrated. At that time, she went to check on her brother-in-law Yuta... Unlike her serious husband, Yuta is frivolous and senses Ema's hidden Kokoro, so he persistently courts her. Before she knew it, Ema was swept away by her brother-in-law and experienced an overwhelming orgasm that she could never experience with her husband. She tried to accept it as a one-time mistake, but her body, craving more pleasure, could not resist his persistent advances and was overwhelmed...