Shaman King began in Shueisha’s Weekly Shonen Jump magazine in 1998.
Japanese publisher Kodansha is now listed as the trademark owner for “Shaman King” in Japan, Europe, and the United States.
Takei drew a series of short stories titled Shaman King 0 in Shueisha’s Jump X starting in November 2011, and published a sequel series titled Shaman King Flowers in the same magazine from 2012 to 2014.
Hiroyuki Takei’s Shaman King manga was previously published by Shueisha.