Cute, shapely Aya Natsume joins an erotic anatomy experiment measuring her areolas, nipples, pussy, clitoris, anus, and vaginal temperature with a metal ruler. The staff deliberately make her say embarrassing sexual terms, spread her legs for an internal temperature check, and read every result to the camera. A clear dildo provides a full view inside her pink pussy before cunnilingus, nipple play, and a blowjob test get her thoroughly aroused. The examination ends with sex and a deep creampie inside her heated pussy.