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Official Site: Kodansha

is a series of light novel by Fuyumi Ono. The first entry in the series ("The Shadow of the Moon, The Sea of Shadow") was published in Japan in 1992; the last volume was released in 2001. The series was published by Kodansha and contains illustrations by Akihiro Yamada.

The Chinese mythology-influenced books were adapted into an animated television series in 2002. The Studio Pierrot production aired on Japan's NHK from April 9, 2002 to August 30, 2003, totaling 45 episodes.

The novels were licensed in the United States by Tokyopop and the first four volumes were released between March 2007 and November 2010 as part of their Pop Fiction line. Subsequently, the English license reverted back to Kodansha USA. The entire anime series has been released on DVD in the United States by Media Blasters.

In this world, there are a total of thirteen lands. At the center of the world lie Koukai (the Yellow Sea) and Mt. Hou which are entrusted to Seioubo. There are twelve kingdoms, twelve rulers and twelve Kirins. Each kingdom has its own Kirin, called a Saiho, who must chose a ruler. The ruler will have immortal life as long as he keeps the kingdom healthy and their heads are not severed from their body.

Youko Nakajima has not been a contender in any CBUB matches.