Yuko, a librarian, appears wearing a modest long skirt and glasses. "I masturbate almost every day..." She seems to be far more lewd than you would imagine from her serious appearance. She masturbates with a vibrator while her anus twitches, and gets excited by face-sitting for the first time in her life. Then she cums repeatedly onto her precious glasses, making them sloppy... But even so, the naughty Yuko is super excited! Yuko, who cums multiple times during sex, actually has a secret... It gradually becomes clear that the reason she decided to appear in this adult video is "to forget her ex-boyfriend." Will Yuko be able to forget her ex-boyfriend?!