Rio Hamasaki is lured into a free trial course and decides to experience esthetics for the first time. Having almost no prior experience with esthetic treatments, she obediently follows instructions. Initially feeling discomfort, she realizes too late what's happening, and ends up with a wet spot between her legs. The esthetician quickly notices the situation and directly confronts her: "Miss Hamasaki, your panties seem a bit wet... Could it be that you're feeling pleasure? In a sexual way?" Still unable to comprehend, Rio can only apologize. The esthetician relentlessly continues her probing and pressure.