My husband has no interest in me... Even when we drink together, he just tilts his glass in a sulky mood. My husband goes home first, and I'm left behind to meet a student named Yuzuru who is drinking next to me... We grow closer, and I end up having a relationship with him. I then get a spare key to his room, and I start looking forward to using it to go to his house. And when he comes home, I have to satisfy the young and vigorous sexual desire of Yuzuru again and again in the limited time we have...