ZOZO-222 A co-ed school practices a high-quality class where boys and girls learn about bodily differences by getting completely naked. The third period of health and physical education covers the mechanism of pregnancy.

Can learning sex with classmates' bodies curb the declining birth rate!? A special lesson started on a national whim. The theme for the third period is 'Mechanism of Pregnancy.' This time's teaching material is Ms. Hinami Kuroguro. 'Huh? Putting a camera in there... What the hell!' Even she, who is always assertive, stands no chance against the nation. Made to get on all fours and have a CCD camera inserted, her vaginal streaming is broadcasted to the whole class. Unable to endure the boys' fingers and tongues probing her, she snaps, 'Don't look!' while squirting. With her body fully prepared, the school doctor inserts his massive cock. Ms. Kuroguro becomes the sacrifice for everyone to learn proper pregnancy techniques. She repeats convulsive orgasms as she is filled with a huge amount of semen!