High school boys and girls participate in sexual education classes held in the classroom after school. The video captures them examining each other's physical development, revealing real moments of growth such as breast enlargement, pubic hair growth, male erections, and ejaculation. AV actress Saori Kurashina plays doctor, enjoying a game of pretend as she checks bodies. Scenes include girls shyly exposing their breasts to boys and being stripped of their panties for inspection of their anus and genital areas. AV actress Ayumi Tsubasa documents these events. On a school path during commute, students encounter a pervert appearing completely naked under a coat. He pulls down their panties to inspect their hairless genitals, creating an eerie and realistic scene. AV actress Kohara Nao narrates this disturbing encounter.