Такэи Хироюки: Shaman King Omnibus 7 (Vol. 19-21)

But the road to this pinnacle of spiritual power runs through the Shaman Fight, a gauntlet of battles with rival mediums who call forth dizzying powers from the world of the dead in their own bids for the crown. At Yohs side is Anna, his coach, fiancee, and a powerful medium in her own right. Sure, itd be nice if Yoh had a little more time to train and mature...but the Shaman Fight is only held once every 500 years, so hes going to have to grow up quick!