Kawaikereba Hentai Demo Suki ni Natte Kuremasu ka? is a romantic comedy anime series that follows the story of high school student Keiki Kiryuu. One day, he discovers a mysterious love letter addressed to him, but with no name and a pair of panties attached. As he investigates to find out who his secret admirer is, he encounters various quirky and eccentric female classmates who have their own secrets and desires.