Newly appointed slender beauty teacher, Miss Hara. Today's sex education class for diligent students has her slightly nervous. During the lesson, a student suddenly calls out, "Huh? Miss Harano? Meeting you here!" The speaker is the school doctor—and once, the best friend of her ex-fiancé! This only deepens her embarrassment. Still, she begins measuring the students' fully erect penises with a smile. Then suddenly, "Huh? Me too...?" she gasps as the school doctor strips off her clothes and pure white lingerie, starting a physical examination. He instructs, "Everyone, watch closely and learn," as he measures her vaginal diameter and depth, making her tremble with humiliation. The students' reactions are intense. Then, a shocked student blurts, "Wait, wait—gender selection intercourse practice? We never heard about this!" Mr. Tanaka's soft touch makes her nipples reflexively harden. She explains that thick, intense foreplay increases the chances of conceiving a boy, while a lighter approach favors a girl—sending the students into an excited frenzy. Suddenly, a student asks, "Miss Harano, is this considered intense?" as he performs deep throat on her. She moans, "Ah, I don't know..." admitting it's more shameful not to teach them, and begins the girl-conception practical session. The school doctor's rock-hard cock thrusts inside—“It's bigger than his…”—and she's overwhelmed by pleasure in multiple doggy-style positions. Has she turned into a slut under his pounding? Riding him in cowgirl, she's hammered with pile-driver thrusts. Surrounded students grope her breasts, torment her nipples, and she arches back in simultaneous ecstasy. "How many orgasms do you want from me?! Just stop already!" she pleads, sucking a young, virile cock as he erupts deep inside her with thick creampie after creampie. "This is how you make a boy, you see (laughing)!" she says, as the students thank her, saying they've learned so much. Thank you very much!