Tomita Yui, a pure-hearted bespectacled girl, is consulting a counselor about sex online. She mistakenly assumed the counselor was a woman, but when they met in person, the counselor turned out to be a man who aggressively pursued a physical relationship. With her inherent M disposition, she gets swept up in the moment and engages in the relationship. When she is penetrated by his thick penis, she experiences pleasure and spills her juices all over, convulsing and reaching climax. Men are irresistibly drawn to her mature allure, which she has developed after overcoming her distrust of men and shedding her old skin.