Onmyou Taisenki - Byakko Enbu

Onmyo Taisenki is a Japanese manga series written by Hiroyuki Kaido and illustrated by Yoshihiko Tomisawa. It was adapted into an anime series produced by Sunrise. Storyline of Anime: Riku Tachibana 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 Shikigami, strange monsters with human owners.