Akari Kohinata is charmed by her classmate Yuu Hoshikawa, whom she considers the cutest girl she's ever met. Little does she know, Yuu is actually a boy who harbors deep feelings for Akari. Despite Yuu's efforts to showcase his masculinity, Akari only finds him more endearing. While Akari adores Yuu's charm, he remains convinced that she is the cuter one. As their bond strengthens, they both realize that the person beside them is the most adorable of all.