Kuu Shiratori, a high school student residing in Academia, a city that symbolizes humanity's resurrection after a catastrophic event ten years ago, is the protagonist of the anime Kyoushirou to Towa no Sora. Despite being content with her life at school, Kuu can't seem to shake off a recurring dream in which a prince rescues her. During the school festival preparations, Kyoushirou Ayanokoji, the prince from her dreams, shows up and invites her to go with him, exactly as he had done in her dreams.