Married for 15 years, the relationship between Uno and his wife gradually cooled, they had not made love to each other for a long time. At this time, Uno's nephew, Yuki, had come to Tokyo to prepare for the university exams and wanted to stay at her house for a few days. It had been a long time since he had seen Yuki, but now he was mature and extremely handsome. Determined to pass this year, Yuki had to restrain herself and not masturbate for a year. But that determination of his quickly collapsed when he saw his aunt's seductive body. The image of Uno kept popping up in his mind, his cock was always erect, making him unable to concentrate on his studies. Uno accidentally saw him masturbating, Yuki told her the truth and asked her to masturbate for him. He loves his nephew and wants to help Yuki focus on studying, so Uno agrees. She used her hand to help him cum, but after a while, Yuki's cock became erect again. Especially when he saw Uno practicing yoga, he couldn't stand it anymore and rushed to release his sexual desire! Because he hasn't had sex for a long time, Uno is extremely sensitive. Every click of Yuki made her body tremble, constantly emitting moans of joy. And during the time Yuki was here, he constantly had sex with his seductive aunt, releasing all the sperm he had suppressed and accumulated over the course of a year into Uno!