The main character of the hentai is a girl head of the student council named Yukihara Serizawa. She is a real aide at the academy. All teachers and students love and respect her. However, not all of them do. A dirty and promiscuous old man janitor named Kitou-san has had his lustful eye on the young beauty for a long time. Soon he devised an incredibly simple plan and lured Yukihara-chan into his brothel. He then set her teeth and gave her a sleeping pill that had been slipped into her cocktail. When the girl fell asleep completely Kitou-san with trembling hands took off her blouse and then her bra and found huge firm breasts of size five ideal shape with swollen with excitement nipples. Seeing such a depraved sight, our hero just went crazy...