Sex is a passion, it is so strong that the younger sister-in-law Mikami can disregard all moral norms, sisterly emotions in order to satisfy this passion. Yes, not long after her older sister got married, she found a way to seduce, seduce her kind brother-in-law. Although she knows it is completely wrong, but what can she do, the desire is hard to resist, the nature is hard to change. She cannot control the deep-seated desire for sex that has penetrated her being in front of such a tempting bait.