That translation about the opening scene seemed a little iffy...
This is how HeartStation translated it, and, i'd be quicker to trust theirs over that one (I'm assuming its from GameFAQs?)
Ah, that.
I'm not going to really dwell on it that much though, namely because, even if it is a mistranslation, it's simply what spawned the idea. The idea itself still makes sense, given that we see Heartless in the dark realm, and they have yet begun to attack people.
For example, Sora's Awakening (and thus ability to use the keyblade) happened before Sora got "Riku's" keyblade. I really doubt Ven's heart gave Sora anything except the ability to Dual Wield.
Otherwise, Sora's station would have been a picture of Ven (much like Roxas had a picture of Sora). Instead his stations were the princesses of heart, which should prove Sora is a genuine keyblade user chosen by the Realm of Light.
Sora's Awakening still has some questionable bits to it.
For starters, he never actually receives the keyblade in it.
Given that Diving into the Heart doesn't always automatically mean someone is getting a keyblade (it's not like Sora got another after fighting Roxas), we have to then ask: If he didn't get the keyblade after all of that, what was the purpose of his Dive?
And additionally, the voice which speaks to Sora has been confirmed to be Mickey.
Mickey, who knew both Sora and Riku before they knew him, had stated to Riku that he had always been with Riku, in his heart.
And, obviously, he was in Sora's heart too.
Since he was monitoring the two, would it not make sense to say that Mickey could see the path down which Riku was heading, and helped Sora along to, say intercept Riku from using the KK for bad?
Yet, again, Sora's Dive produced no keyblade. Perhaps it readied him for one (that is, he could be capable of wielding a keyblade but had yet to receive one), but he did not actually get a keyblade until he took it from Riku.
..As for what Terra sees in Riku, isn't it obvious what Terra sees is a representation of himself? He sees young Riku on the beach and is astonished - because he also sees what he (Terra) himself will become, and he sees how closely Riku will resemble that, especially as he grows older. Perhaps what Terra sees most of all is that, unlike himself, Riku will be able to overcome Xehanort (SoD at least).
To clarify (and I haven't seen the scene, so I suppose that doesn't help), I'm not actually saying that Terra thinks Riku is going to get the X-Blade, but he sees potential in Riku to be a keyblade wielder, and it just so happens that this potential is what will make him qualified to wield it.
The X-Blade, on the other hand, I'm almost sure is Mickey's Keyblade and Sora's Keyblade. Kingdom Key D, being Mickey's, is the key from the Realm of Darkness, and Sora's from the Realm of Light. This makes sense if you look at the X-blade. If you know anything about religion, you would notice that the X-blade looks like the insignia on the Coat of Arms used to represent the Pope (The Key to the Kingdom of Heaven). One key is silver, and the other one is gold.
And I understand the symbolism here, I really do.
Were that the case, though, I don't understand why they would have two Kingdom Keys rather than one KK and one IKK.
Especially given that Days has proven that, when dual wielding, Sora and Roxas are using
two Kingdom Keys (and not, say, one Kingdom Key and another, entirely different keyblade).
Although it is stated in-game by Riku that Sora's keyblade was meant for Riku in the beginning, I can't believe that this is the case at all. Since Sora's keyblade represents light, and Riku instead walks the path of darness, Sora must have been destined for the light half of the x-blade ever since Riku stated he "was not afraid of the darkness". (At the very beginning.)
It was confirmed by Nomura that Riku was destined for the KK first.
About Riku being the rightful owner of the Keyblade – Why is it that Sora had the Keyblade first?
Nomura: That part is also a bit vague. In the Destiny Islands when Riku is swallowed by the Darkness, there’s a sparkle of light, and next comes the scene where Sora first gets the Keyblade, right? In my setting, the Darkness wrapping itself around those two is the Darkness of Riku’s heart. At the moment when Sora enters that Darkness, the light you can see is the Light of the heart. Sora, trying to help Riku, struggling in the Darkness, touches that light and temporarily the Keyblade goes to Sora.
Also, Nomura has said that the exterior alignment of a keyblade has no bearing on its wielder. That is, even though the KK is a light keyblade on the outside, it doesn't matter, and the key can be used for light or dark. The key itself has no preference for either.
This is why Mickey can use the IKK, a dark realm keyblade.
So, Riku can certainly use the KK for darkness.
btw, glad you seem (?) to be getting back into the series, I hope you become a huge KHfag again, like me. :B