Newly appointed teacher, Yui-sensei, takes charge of a practical sex education class—demonstrating in person, blushing before her students! When asked, "Where exactly feels the best?" she shyly murmurs, "C-clitoris..." Yui-sensei, with her gentle, warm smile, is considerate and perceptive beyond her years—no wonder she's already been chosen by Yamada-sensei and is engaged! "I'll do my best, so everyone else try hard too!" she says, stripping down and spreading her legs in a wide M shape. "This is the clitoral glans, the urethral opening, the labia minora, labia majora, and this is the vaginal opening!" Her nipples are pointed out as erect, and her fiancé Yamada-sensei praises her, saying her penis is bigger and harder. On the examination table, she studies bodily reactions by thrusting a dildo deep inside herself. Then, she experiences deep, sloppy blowjob techniques, followed by cunnilingus and actual intercourse practice. Unable to hold back, she gets creampie-pounded—ejaculated inside by Yamada-sensei before they're even married! "Ah, ahh... I just taught you that internal ejaculation leads to pregnancy, didn't I?" "Yes, and this way, the semen travels and may implant. Maybe the teacher will get pregnant too." Thank you, Yui-sensei!