Miyu, a bespectacled, book-loving girl who frequents the library, is described as a complete otaku, lacking any masculine traits. However, her sexual desire is no less than that of a wanton woman, as high as Mount Everest. Her erotic fantasies are insatiable. Two virgin young men ardently pursue her, and under surveillance in a secluded room, only the two of them remain. Her first real penile intercourse liberates her virginity, which has been sealed away by masturbation, and she loses her virginity to a living vagina in a female-dominated sexual encounter.