ZOZO-221 - A high-quality class where male and female students learn about the differences between bodies through physical interaction, 2nd period of health and physical education in a co-educational school, focusing on the structure of the male genitalia and the mechanism of ejaculation.

Improving the quality of sex education is urgently needed to address the declining birthrate! The highlight of the new curriculum set by the government is learning actual sex with classmates! The theme of the 2nd period is 'The mechanism of erection and ejaculation of the male genitalia.' Now, Ran Himeno, Hana Amano, please stimulate the male student's penis with your hands and mouth. Misaki Matsuoka, the class president, will support you. Despite repeated protests, three beautiful girls desperately endure the abnormal instructions of their teacher, encouraging each other. Hey, look the male student in the eye! Take off your uniform already! Once you somehow finish ejaculation, receive a thorough genital examination from the school doctor, then proceed to a large penis insertion experience. Moaning with 'I'm embarrassed, I'm really embarrassed...' as nipples harden involuntarily, resulting in a shrimp-like arching of the back.