#Newly appointed female teacher #Social Studies #Physical measurements #Gender selection #Their true nature is revealed #A female teacher gives thorough sex education to a sexy virgin student so he won't have any trouble in the future! The new teacher, "Uesaka-sensei," is overwhelmingly Ke'ai. Because she's super serious, she keeps turning her eyes away from the naked boys. That's why she can't measure their erections properly! Look, look! Now it's time for Dr. Uesaka's measurement. The handsome doctor from the university hospital strips her, presses her nipples, stares at her, and touches her from behind. "The doctor's fingers feel so good," she exclaims, squirting! Squirt! Squirt! "A gender selection practice?" "In front of the students?" "I'm so embarrassed..." The doctor kisses her as her emotions grow. Dr. Uesaka entangles her tongue. All new teachers do it, so don't worry! "It's big..." she says, gazing at the erect penis from close range and giving a handjob. A vacuum blowjob that makes it melt with saliva. The serious classroom is filled with incredible sex appeal as the big dick goes in from behind! Everyone, for boys, it's a deep piston! It's easier to reach orgasm that way! For girls, rub the front lightly! Keep the G-spot in mind. Right now, we're practicing inseminating boys. And then the practical exercise of gender selection "Wait, don't look," "I can't hold it in, teacher," "Do whatever you want," while the doctor thrusts into her as much as he wants in the cowgirl position. He gets fucked hard from behind. She's on all fours, trembling. Her big breasts are swaying. She feels a sense of guilt when she's watched by her students. Her lewd nature is exposed. She may seem serious and tough, but she's actually a lonely, erotic teacher who wants cock every day. Will it be a boy or a girl?