The ninth installment in the series of private training by a real son is finally here! This complete recording covers everything: exposure, humiliation, teasing, orgasm denial, forced climax, and convulsions. The story follows us, two brothers, taking a neighborhood boy under our wing for sexual training after he was approached by our mother, who told him, "It's fine—my mom's a total pervert." Normally gentle and modestly dressed, she's known in the neighborhood as a kind and unassuming mother. But in reality, she's a masochistic pervert with a G-cup bust and a filthy body made to be a man's toy. This striking contrast is one of her biggest charms, making for a highly erotic, packed-to-the-brim experience.