Nabari no Ō (隠の王, Nabari no Ō? lit. Ruler of Nabari) is a Japanese manga series written and illustrated by Yuhki Kamatani. The series premiered in Japan in Monthly GFantasy in 2004 and is currently still in serialization. Square Enix is also publishing the individual chapters in collected volumes with eight volumes released as of March 27, 2008. The series has been licensed for an English language release in North America by Yen Press, with the first volume scheduled for release in May 2009.
J.C.Staff created a twenty-six episode anime adaptation of the Nabari no Ō manga series. Directed by Kunihisa Sugishima, the series premiered in Japan on TV Tokyo on April 6, 2008. The episodes subsequently air on other TXN networks, including TV Aichi and TV Osaka.