is a Japanese manga series scripted by Yoshihiko Tomizawa and illustrated by Hiroyuki Kaidō. It was adapted into an anime series produced by Sunrise, NAS, and TV Tokyo. Plot Onmyō Taisenki literally translates to 'The Chronicles of the Great Yin-Yang War'. The series makes clear references to I Ching and to the Taoist theory of the five elements: , , , and . Various Taoist elements are incorporated within the story: the existence of the four , the use of cards that act as the , the use of trigrams to represent direction when the Drive is swung (north-south-east-west is represented as 坎-離-震-兌 instead of 北-南-東-西, respectively), the emphasis on the balance of the sekki (the 24 seasons), and the character Nazuna, who is a Taoist maiden. Also, the show itself can be split into four seasons (13 episodes each), each with its distinct story, purpose, and goals. Anime The Onmyō Taisenki anime was produced by Sunrise, a subsidiary of Namco Bandai Holdings. It has a total of 52 episodes, and was aired weekly in TV Tokyo (from 6:00pm to 6:30pm) from September 30, 2004, to September 29, 2005. It replaces the series Aqua Kids and then was replaced by series Kotencotenco. Storyline of Anime is a 12-year-old Japanese 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 , 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 Onmyōdō (such as the use of Tōjinfu, for example), drops by eventually. The three of them have 'contracts' with Shikigami. The main events of Onmyō Taisenki anime are related to the