DO NOT READ IF YOU HAVEN'T WATCHED ALL OF SEASON 7 AKA HANDS OF TIME
Ok, now that that's done, we can move on.
So who is the new samurai? I have a couple of ideas:
Pixal- now this would be sweet. She disappears from Zane's head and comes back as the samurai. All is sweet. This is the popular theory

Echo Zane- this isn't that popular, but I don't think it's impossible. Echo, inspired by his brother, decides to go out and become a Samurai. Another 'all is sweet' kinda thing.

Seliel- this is one of my personal theories. All I say is that it would be a good way to introduce Seliel to the show.

Someone else- it's possible.

Sorry for the awkward formality of this chapter. It's weird to talk like that for a while.