Improving the quality of sex education is urgently needed to combat the declining birthrate! The highlight of the new curriculum established by the government is learning about real sex with other classmates! The theme of the second class is "The mechanism of male erection and ejaculation." So, Ran Himeno and Kano Amano, please make the boys erect with your hands and mouths. The class representative, Mio Matsuoka, will support you. The three beautiful girls endure the teacher's strange instructions, which continue no matter how much they protest, while encouraging each other. Hey, look the boys in the eye! Take off your uniform already! After somehow finishing ejaculating, she receives plenty of cunnilingus from the school doctor, and then experiences the insertion of a huge cock. Her nipples get hard on their own, and she moans, "I'm embarrassed, I'm really embarrassed..." as she arches her back and cums!