Yuna is a married woman who has been married for several years due to an office romance. Their married life was harmonious and they had no complaints about anything, but... At some point, her husband started working overtime and was often away from home, and out of her frustration, Yuna began to indulge in masturbation. In addition to that, she recently started feeling someone's eyes on her in the locker room and approached her boss for advice. Later, she is told the true nature of the invisible gaze by her boss...