My son's friend keeps getting made to cum because of his uncontrollable, super-extreme sex...

Yumi has been addicted to BBQ lately. One day, he also acts as a friend of his son, Kosuke, who came to visit, and he can't take his eyes off Yumi's plump body... When Yumi realizes this, she ends up asking him out of a mischievous attitude. However, Kosuke, who has a strong sex appeal, cannot stop after a one-off shot, and ejaculates over and over again like a monkey, continuing to devour and violate her mature body. After a while, Yumi's body begins to scream as she has an endless, powerful mating with him, who has infinite stamina...