is a Japanese mixed-media project developed by and Bandai. A manga series, scripted by Yoshihiko Tomizawa and illustrated by Hiroyuki Kaidà Â, was serialized in Shueisha's V Jump magazine from November 2003 to December 2005, with its chapters collected in three tankà Âbon volumes. A 52-episode anime television series produced by Sunrise, NAS, and TV Tokyo, was broadcast from September 2004 to September 2005. Three video games were also released: one for Game Boy Advance in 2004 and two for the PlayStation 2 in 2005.
Riku Tachibana is a 12-year-old boy who lives near Tokyo. Never having met his parents, he lives an ordinary life with his adoptive grandfather. His grandfather had taught him a series of strange hand movements, which Riku did not know the purpose of until the day his grandfather is attacked near his shrine. But it is not an ordinary attacker. The attacker is a , strange monsters with human owners. Riku comes to the scene and that's where he first gets in contact with his , the device he uses to call and make a with Kogenta of the Byakko, his shikigami and, from that day on, best friend. The shikigami needs, for special attacks, a special series of , one of which happens to be the strange hand movements Riku's grandfather always taught him.
As Riku's grandfather decides to leave the house for a journey, the 10-year-old boy and the 10-year-old girl rent rooms in Riku's house. The 17-year-old man, Masaomi, who teaches Riku the secrets of Onmyà Âdà  (such as the use of Tà Âjinfu, for example), drops by eventually. The three of them have "contracts" with shikigami. The main events of the series are related to the menace of the , a powerful Japanese financial group related to the Onmyà Âdà Â; attempting to open the four , and freeing , a boy who was born with the power to control , and had been imprisoned for thousands of years.
A manga series, written by Yoshihiko Tomizawa and illustrated by Hiroyuki Kaidà Â, was serialized in Shueisha's V Jump from November 19, 2003, to December 17, 2005. Shueisha collected its chapters in three tankà Âbon volumes, released from October 4, 2004, to March 3, 2006.
A 52-episode anime television series, produced by Sunrise, NAS, and TV Tokyo, was broadcast on TV Tokyo from September 30, 2004, to September 29, 2005.
was released the Game Boy Advance on December 9, 2004.
was released for the PlayStation 2 on March 31, 2005; the game required the EyeToy accessory.
was released for the PlayStation 2 on June 23, 2005.