[Tomoru] A story about a naked schoolgirl who became an example in health class for religious reasons [MTL]

An anxious high school girl is stripped naked for a religiously framed health class demonstration, her exposed body becoming the focal point of a provocative lesson led by teacher Ayase and student Sato‑kun. As the teacher stimulates her clitoris and instructs Sato‑kun to insert his erect penis, the girl's large breasts and hairy pubic area are shown in vivid detail while classmates gasp and the teacher declares the resulting fluid is sperm, promising fertilization. The scene builds tension through the stark contrast of educational authority and erotic exposure, culminating in a climactic act of nakadashi that leaves the girl overwhelmed with pleasure.