At Kashihara Girls' Academy, an alien, former ninja, weak telepath, and a boy who pretends to be a girl all share a common trait: they are all classmates who conceal their true identities from the world. Despite appearing to be the best of friends, Rikka, Chiyo, Sekine, and Tsubasa each guard a monumental secret that they cannot reveal under any circumstances. In order to continue their facade as normal middle school girls, they must devise ingenious ways to hide their true natures. Nevertheless, this proves to be a difficult task as the four students become embroiled in more and more hijinks.