A few years after her husband passed away, Sayako, who lives alone, was visited by her daughter and son-in-law. While the three of them were having tea and talking, the son-in-law dropped something, so Sayako crawled under the table and her eyes fell on his crotch. She thought it might be a bulge in his pants, but she swallowed her saliva. The son-in-law seemed excited by the different environment and tried to use it, but the daughter-in-law gently refused and massaged him instead, when Sayako called out that an old friend had come. Then, the daughter left the massage to Sayako and went out. The son-in-law must have been tired, because he fell asleep when he woke up. However, his lower body was tented, and Sayako was drawn to the bulge and touched it lovingly, taking it in her mouth. While she was sucking on the son-in-law's hard and large thing with fervor, a cloudy liquid flew into her mouth. After sucking it all off, Sayako returned to her room. That night, Sayako was unable to sleep. Sayako's body is hot because she hasn't tasted a penis in a long time, and she starts masturbating quietly. Of course, she remembers her son-in-law's crotch...