FERA-176 [Uncensored Leaked] My mother became my sex practice partner. Because sex with my mother was so good, I broke up with my girlfriend and passionately ejaculated inside her again and again. - Aika Nagano

Recently, it seems her son isn't getting along with his girlfriend. Worried, Aika asks him what's wrong, and it turns out the problem is that he's bad at sex. "Well then, I'll train you," Aika says, willing to do anything for her son's happiness, and proposes to use herself as a practice dummy for sex training... But Aika's overwhelming skills end up driving her own son crazy.