In this world, there exists a system where every woman, upon reaching adulthood, loses her personality and is reborn as a "Human Toilet." Their bodies merge facial and genital areas with toilet fixtures, stripping them of emotions and leaving them with a single purpose: serving men. They can eliminate the odor of urine, maintain cleanliness, and engage in sex using their transformed bodies. This mechanism operates with mechanical precision, constantly devoted to fulfilling male pleasure.