This is a story about a Kuu, who is thinking about her prince all the time, she has dreams of him all the time, of him telling her to come with him. One day, as she goes back to school, she meets with someon...

In the far future, humans abandon the devastated Earth and move to the upper world "Tenjo". But Tenjo and the law of causation collapse by a war and humans return to the Earth, which has turned into an inhab...