Sayaka, a bespectacled, bookish girl who frequents the library, is described as a complete otaku, lacking any masculine traits. However, her sexual desire is as intense as a slut's, reaching the level of Mount Everest. Her erotic fantasies are insatiable. Two virgin men pursue her passionately, and in a secluded room under surveillance, only the two of them remain. Her first real penile intercourse liberates her virgin heart, which has been sealed away by masturbation, finally allowing him to penetrate her genitals in a female-dominated sexual encounter!