Megumi's husband passed away from a sudden illness three years ago. Her daughter got married, and the couple continued to live with Megumi, so now the three of them live together. Megumi was grateful that her daughter and son-in-law lived with her. However, she developed a bad habit of peeking in on her daughter and son-in-law's nighttime activities and pleasuring herself. Megumi had only known her husband intimately, and their sex life had been uneventful. The passion between her daughter and son-in-law was a shock to Megumi, who had only known her own marital experiences. One day, she was having a drink with her son-in-law. When she was slightly tipsy, he pushed her down, saying, "You're always peeking, aren't you?" and they crossed a line. Megumi fell into a new kind of pleasure she had never known before.