,,Focus Ninjas''

With the post about which character was the focus each season, I noticed how many of them fall flat as a singular focus. Almost none of the original ones, (1-10) really manage to pull it off to actually have a proper main character, even though it's clearly marketed that way. Pilots is Kai, that's pretty undeniable. Season 1: already isn't Kai. Everyone gets an episode and an arc. Kais ends up being slightly more important to the overarching plot, but he still has the same amount of screen...