Non lives a happy married life with a large age gap, but her husband has become impotent and they haven't had sex for a long time. Then her husband tells her that he has a cuckold fetish and asks her to let another man hold him... Non is at a loss, but she seduces her neighbor, Kazuki, if that's what her husband wants. Kazuki desperately resists her blatant seduction. Non gathers up her courage and tries to approach him further, but he just can't take the first step. Unable to bear her, her husband urges her to go to his room...