The cheerful Saya Kanra and the shy Yuto Kozaki are childhood friends and started going out in middle school. But, for Saya's surprise, Yuto makes a high school debut and becomes the hottest guy in school! Panicking about her plainness and afraid of being harassed by his new fans, Saya decides to keep their relationship a secret and becomes a "gloomy character" so not to caught attention. Now that Yuto is the popular guy and Saya is the nerd girl, will their relationship last through the secrets?