Yuuki Wakasa is an ordinary fifth grader-until the day a magic stone falls from the sky right into Yuuki's hand. A mysterious woman, appearing in a mirror, implores Yuuki to save the sun that shines on two mystical lands. The secret to saving the sun is in the magic stone, and Yuuki must dare to dream in order to find other magic stones before the last flicker of light goes out.

First published in Japan in 1997 by Kodansha Ltd.