A private school called East Edogawa Academy is where Rieko Edogawa, a lively and brave second-year student, attends. She's widely known and liked by everyone in town and school except for her childhood friend Teppei Sakamiya. Rieko has harbored feelings for Teppei for quite some time but unfortunately, he only sees her as a friend. However, things take a turn when Naoto Akutsu, a transfer student, makes an appearance.