Maki Maehara never thought he'd make any friends, much less become friends with the second prettiest girl in class! Now he's also befriended Umi's childlike best friend Yuu, the most popular girl among their classmates, and the three spend lots of time together. But when Umi notices Maehara getting closer to Yuu, she begins to feel left behind... From sleepovers to the school culture festival, is Maehara and Umi's relationship slowly developing into something more...?