The schoolgirls seem completely unaware, thrusting their buttocks outward and exposing their anuses directly to the camera lens. Though surprised by the sudden examination, they show no resistance as they undergo the pinworm test. After the procedure, some hold the film up to the light to examine it, while others sniff it to confirm the results. Once finished, the girls innocently tuck the film into their bags and leave the restroom, their expressions carefree, as if nothing unusual had occurred. The scene unfolds like a strange yet ordinary moment seamlessly woven into daily life.