That's a good point, particularly about the sword. So, if we assume that there've been special people for a long time, does that lead to the possibility that Hiro is going to find out that Kensei was one? Or that his dad's been around for a long time, actually? Or even that his dad somehow was Kensei?
(I'm such a hopeless Trekkie that anything that might give GT more screen time appeals to me. Could you tell?)