A new installment of "Defecating Infimary" finally arrives, depicting how a schoolgirl's pristine anus is gradually developed by the school doctor and classmates. The long-awaited sequel to the previous work features an intense curriculum of anal training, including finger penetration into untouched anuses, stimulation with dildos, anal sex, and enemas. The graduation exam—covered-in-feces lesbian threesome—becomes a ritual that fully liberates the students' bodies and minds. As they release fecal fluids, the girls gradually awaken to a new kind of pleasure.