Ashita, Naisho no Kiss Shiyou

Popular Saya and shy-guy Yuuto started dating in middle school after they discovered their shared love of a popular online game. But when Yûto's high-school debut is too successful and he becomes the hottest guy in school, Saya panics and pretends they aren't going out, so as not to be harassed by his conniving hangers-on. But can their relationship last through the secrets and the beauties?

(Source: Kodansha USA)