A newly discovered unknown virus has been found through research to primarily invade the human body via the anal mucosa. To expedite vaccine development and prevent the spread of infection, a large number of anuses need to be analyzed, so "Anal Health Checkups" will be conducted in schools nationwide. This checkup will be carried out in strict secrecy, and some degree of human rights violations will be tolerated. Students are asked to obediently follow the instructions of doctors or nurses, remove their panties, and assume a hands-and-knees position on the examination table.
