My husband doesn't wake up when he sleeps... ~A married woman captivated by the thrill~

Koi is the wife of Nobuo, the husband of a Kendo player. Koi had a relationship with Kozuka, her husband's disciple, and was enjoying their encounters without her husband's attention. It wasn't that I didn't love my husband, I just wanted him to love me more, to see me more...that was the true feeling of love. Love seduces the young and strong Kozuka and distracts him from his loneliness and greed, but gradually he becomes unfulfilled. Then, she started asking Kozuka to act at a distance where she could feel her husband's heartbeat...