Do realize that it's too early to say I'm "positive," but the theory seems to hold a lot of water.
Click to see the pictures better.
Apollonius = Amata
Everyone has been saying lately that Amata's elemental ability comes from his feet, which rules out that he's the owner of the Solar Wings. However, in the OP and in the series, it's replayed a lot that he
does have them.
He has the Solar Wings on his side in the OP, not on Kagura's.
Lit by the light of the sun, the wings appear to Kagura, whom then says "The Solar Wings."
However, Amata has an attachment to Apollo with this scene, as it mirrors EP1 when Apollo fell from the building. The strings attached to his back reminded Silvia of the Solar Wings. The same applies for this whole fight scene: the strings attached to his back are like wings, the lines of his elemental power.
Another very similar scene to quite a few of the OS episodes. Amata gets resolved and the machine returns to normal. Regardless that Apollonius doesn't appear, nor does he to Kagura.
Apollo = Kagura
Everyone says that Apollonius is Kagura, however, I disagree. As far as I recall, Apollonius had a very different personality from Apollo, yet Apollo was his reincarnation. And whilst Kagura has an attitude similar to Apollo, he has no tie directly to Apollonius so far, no proof or sight of his "Solar Wings" yet.
See that in the OP, he has no wings. Rather, it looks like a trace of an animal.
However, he
does have an aura, and so did Apollo. It isn't quite proven yet whether that ties him to either side, as it's pure red, not orange like Apollo, Apollonius, and Amata.
His attitude is exactly like Apollo's, that I agree with... but it still doesn't tie him sadly to Apollonius just yet without further proof.
Someone mentioned that the sun lights up Kagura. However, the Solar Wings don't appear like they did for Amata. It just connects him to Apollo again.
Realize that it isn't too far off for this theory:
Kagura = Apollo
Amata = Apollonius
However, it isn't that far off for this theory either:
Kagura = Apollo, Apollonius
Amata = Apollonius, Celienne
Mikono = Silvia, Celienne
Zessica = Silvia
I don't find it too far off to say it's possible for reincarnations to come in splits. It's also not too far off to say one person is a reincarnation of both.
Looking at the OP, I don't know if this'll spoil the future, but Mikono, up close:
looks kinda hurt physically.