Yuka, a married woman working as a librarian, is attracted to the hidden charm of a company president named Ozawa, who used to frequent the library. Yuka, who wears glasses and has a simple demeanor, is captivated by this charm. One day, Yuka, seemingly unassuming, comes for a job interview at Ozawa's company. The reason she's applying, despite her lack of experience, is because of her husband's infidelity. She's been trying to escape reality ever since… Ozawa, seeing through her facade, proposes hiring her as his mistress's secretary, seizing this once-in-a-lifetime opportunity. To prevent the hesitant Yuka from escaping, Ozawa, on the spot, steals her lips with his tongue, which is as erotic as a sexual organ…