
A new virus spreading through anal mucosa triggers a secret, mandatory 'anal health check-up' across schools. Students are forced to strip and submit to invasive exams under the guise of medical necessity. Their rights are ignored as they are forced to expose themselves to doctors and nurses.




















It's a long-running series, but it seems some entries get pulled from sale occasionally, so there are works you can no longer watch. Since it was released in 2021, a time when everyone was used to wearing masks, it didn't feel strange for the male student to be wearing one. If anything, it was more distracting when the teacher or students weren't wearing them... There are three anal scenes, and the second one was quite good, but maybe they dragged it out too long because the third one felt very rushed and chaotic. Overall, it's a 3-star rating—nothing special, nothing bad.
Pros: The waiting in the nude during the downtime. However, when measuring their three sizes, the two who finished first were allowed to put their clothes back on, leaving Shiina Akari for last. The scene where Shiina Akari collapses while still naked—perhaps from hyperventilation—and the two clothed girls support her was novel; I wish that part had been a bit longer. Cons: I'm not really interested in anal play, so I focus on the actresses' expressions, and while Aoi Morinaga is beautiful, I felt her expressions lacked charm.
*4 people appear. The contents are as per the introduction. Initially, the body measurements were taken by Kanna Shiraishi, Akari Shiina, and Honoka Shiina. Everyone feels ashamed as they are stripped naked. Next, Dr. Honoka Shiina gives an anal examination to Kanna Shiraishi, Aoi Morinaga, and Honoka Shiina in that order. I'll endure being toyed with in many ways. Other than Kanna Shiraishi, the insertion started from the medical examination. Kanna Shiraishi usually doesn't have a real performance in works like this, but this one didn't either.