"If possible, I want something extra... just having sex isn't enough." One day, Mirai-san had sex with the curtains open, in a situation where "someone might be watching." She was enveloped in an exhilarating sensation she had never experienced before, and awakened to the sexual fetish of "transgressive sex." Since then, she couldn't be satisfied with just the pleasure of pure sex, and she enjoyed the thrill of not being caught in cheating sex, and now she's finally appearing in an AV... She indulges in the greatest illicit pleasure, spiced with the largest amount of transgression she has ever felt, which she can never get from sex with her husband!!