The moment KANBi exclusive actress Rumi Orikasa awakens to a new pleasure... In her happy newlywed life with a much older husband, her only concern is their nighttime activities. Perhaps due to his age, her husband's cock goes limp easily, leaving her heart and body unsatisfied day after day. Then one day, a piece of gorgeous lingerie is left in her room. Just as she puts it on, delighted, thinking it's a gift from her husband, Shinya—her husband's stepson—suddenly visits and catches her. He reveals that the lingerie actually belongs to him. Despite resisting his forceful advances, she is reminded of the pleasure she had forgotten as a woman by a cock that stands far more bravely than her husband's. From that day on, a twisted love triangle is formed, and an immoral new sex life begins...