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

Asayo, who is a hobby of muscle training, finds out that her son's friend Kentaro has a lack of exercise, and she teaches him a lot... The size of her crotch that she accidentally touches makes her remember her sexual desire that she can't fully release from training alone. And then, succumbed to his desires, he plays with his cock and seduces him... However, his incredible strength never ended in one or two times, making her body climax many times, and she continued to cried out in agony. Asahi finally gives up to her incredible sex with her, which seems like a forever...