is a manga series released by Clamp. The manga is published in Japan by Kadokawa Shoten, and in English originally by Tokyopop, but has since been re-licensed by Dark Horse Comics. It is the group's first work to use a quite different art style unseen in any other CLAMP series, which uses a more distinctly pared down style. There is less emphasis on detail and more on accentuated posing and gestures. This kind of artwork would later be used in series like Chobits and .