Not really a theory, just an idea that popped into my head and I wanna get an opinion on.

So, this got inspired by these three lines:

Yozora: “how did you recognize me as Yozora?” Yozora: "This isn’t what I really look like"

The Nameless Star: “He’s been changed beyond recognition—his heart replaced with another’s.”

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I think most people have come to a conclusion along the lines of Yozora being Versus XIII Noctis, just re-branded to avoid confusion with FFXV and fit into KH Better.

But what if his original appearance is a lot closer two that original V.XIII Noctis? I bring this up mainly because of the red-eye and, maybe it's just me, but his roots look darker than the rest of his hair, like he dyed it from black to grey/silver.

Which makes me wonder if maybe his heart was transferred into Riku. I mean, we already know transferring your heart can potentially affect your vessel's appearance to some degree like with Terra and Xehanort. Though, I suppose you could just attribute silver hair and gold eyes to darkness.

But if we follow the idea that Yozora has a blue eye and greyer hair because of the body his heart's in, the only character who matches the description off the top of my head is Riku. Then again, I'm not as familiar with the phone game's cast, we don't know the forteller's faces yet and even if Yozora's heart did get put into someone else, it could always just be somebody who hasn't be introduced yet. Idk, Ephemir has grey hair, I guess.

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Like I said, it's not really a concrete theory. Mainly just wanted to throw it out there to see what other people think and also i so can evidence that says i called it if i somehow wind up being right in a decade