Shaman King

In the world of Shaman King, people with the ability to communicate and fight with spirits are collectively known as Shamans. The series is centred around Asakura Yoh, a laid-back, easygoing character who is heir to the powerful shamanic Asakura Family, as he enters the Shaman Tournament, a semi-millennial event that draws shamans from around the world to compete for the chance to become the Shaman King and the wielder of the omnipotent Great Spirit. In the process, Yoh befriends and makes rivals of other characters, and gradually learns of the true nature of the Shaman Tournament, and his connection to Asakura Hao, the favourite to win.