Shaman Fight
Yoh's first opponent in the Shaman Fight is HoroHoro, and things get awkward between them both when HoroHoro's younger sister and Anna seem to forget that "opponent" and "friend" are not antonyms.
Aired 03/10/2001EP 14 - Shaman Fight
2001
Shaman King
Shamans possess mysterious powers that allow them to commune with gods, spirits, and even the dead…and Manta Oyamada's about to learn all about them, because his class just welcomed a new transfer student: Yoh Asakura, a boy from way off in Izumo…and a shaman in training!
(Source: Kodansha USA)