I met my cousin, who taught me how to masturbate a long time ago, for the first time in five years.

Five years ago, Shiori, a student, has gained a slight boost and has become involved with her cousin Masashi. That said, he didn't have sex, he just taught Masashi how to do it, who doesn't even know how to masturbate yet. Both were just weird at that time. It had been awkward ever since, and Shiori had been away from him. After that, the two of them were to meet again... Her cousin's monkey-like sexual desire drives Shiori's body crazy! After being pounded at him with his cock many times, he finally begins to seek it himself.