Mature women are good for sex friends!

Tatsuya has a sex friend, Nobuko, a 50-year-old mature woman he met on a dating site. Tatsuya had a physical relationship with Nobuko, and was enjoying his sex life with Nobuko. Today at Nobuko's house, we indulged in each other's sexual desires during the daytime... One day, Tatsuya and his friend Junpei are having a romantic relationship with each other. Junpei says that he is being toyed with by a younger sex friend, and Tatsuya scoffs, saying, ``If you're going to have a sex friend, you'd want a mature woman!'' but...