With her translucent white skin and slender, beautiful legs and butt, the beautiful Saeki Eri seductively tempts her son's virgin friend into the role of a lewd mother, flashing her privates at him! She slowly removes her stockings, bares her beautiful buttocks, and asks her son's friend to apply some cream for insect bites. Directly touching sensitive areas like the cleavage and her privates, she learns that he's never seen a woman's genitals before, and says, "Take a good look. This is a woman's vagina," and "This is what a vagina smells like. You can lick it, just this once," allowing him to lick the pleasurable spots, praising him for doing well. After making him feel good, she gives him a delicious blowjob! She pushes out her fine, white, beautiful buttocks, and since no one is around, she allows him to penetrate her, giving explicit instructions filled with euphemisms like, "Pound me a lot!" Warning him not to ejaculate inside, she milks his semen with her mouth! Their illicit relationship continues, with Eri eagerly awaiting his visits to masturbate. Taught various things, the former cherry boy becomes skilled in sex, bringing Eri to climax with thick, internal ejaculation sex!