A married woman who obtained a backup key, and her solitary room where she had sex with a male student until graduation. Jinguji Nao JUQ-682

Yuuki, who lives alone, meets Nao, a married woman, at a nearby bar one day. Nao has a strained relationship with her husband, so they sit down for drinks together. From then on, their relationship deepens, even leading to a physical relationship. Yuuki gives Nao his keys, and Nao goes to Yuuki's house with shopping bags while her husband is at work. They then spend a passionate time in the young Yuuki's room, trying to bridge the gap between them…