Shaman King

Manta Oyamada, a shrimpy, studious center-school understudy from Tokyo, tries a shortcut one night through the memorial park to get home when a late night of pack school. While travelling through it, he encounters Yoh Asakura and his "companions": a graveyard filled with ghosts. Yoh reveals himself to be a shaman, a medium between the world of the living and the world of the dead. Yoh also demonstrates shamans' ability to unite with ghosts to achieve a shared goal. Quickly after meeting one another, Yoh and Manta become best friends while Yoh uses his shamanic abilities to help them out through various tasks.