When will shaman kings second season air?

There is no official confirmation from the creators of Shaman King about a second season. Shaman King (2021) follows the story from all 35 volumes of the manga series by Hiroyuki Takei and is considered a complete anime adaptation. Therefore, the chances of a second season may be slim. However, if there are any further announcements or developments regarding a second season, I'll be sure to update you accordingly.