Kingdom Hearts II Keyblade Theory

I believe that the keyblade is a manifestation of a strong heart or someone's memories. I think the reason the keyblade can lock the hearts of the world are because they themselves are hearts.
Like the Artificial Keyblade made by Xehanort's heartless. That keyblade was made from the strong hearts of the seven Princesses of Heart. It was capable on unlocking Kairi's heart within Sora.

Here's something from Nomura's Interview:


VI - Could you please give an explanation for the new keyblade "Way to the Dawn" that Riku obtained and the keyblade Kairi has as well as what the conditions for using a keyblade are?

"There isn't necessarily one keyblade for the dark side and one for the light side, just as many as there exist people with qualified hearts. Concerning the conditions to wield one, at this stage, "Those with strong hearts" is the only obvious one. However, less obvious conditions still exist and there are still plans for an opportunity to reveal those. Riku's "Way to the Dawn" and Kairi's keyblade are naturally the same type of keyblade as Sora's. However there is no particular explanation for the Soul Eater's transfer and occurrence, as well as Riku's handing it to Kairi. When there isn't a normal process of acquisition, I think its ok to think there is some deeper meaning there."

I think the reason SoulEater upgraded to "Way of the Dawn" is because Riku conquered Xehanort and the dark side of his heart. His heart got stronger and became capable of using the powers of Light and Darkness. The "Way to the Dawn" represents Riku's strong Heart and the path he's chosen


Something else from Nomura:

VII - In KH, at the same time Sora became a heartless Roxas was born and entered the Organization. So if that's the case, at that point in time at Castle Oblivion Sora used a keyblade while at the same time Roxas would have been using a keyblade. Was this Sora's keyblade? Within the organization I think we particularly saw Roxas using a keyblade. And similar to Roxas, Sora served as another Keyblade Master conveniently gathering hearts. So why was the Organization defeated?

"The keyblade that Roxas used and the thing that Sora once lost in Castle Oblivion are the same thing. Furthermore, these two both used the keyblade at the same time. This is can be explained by the relationship between Roxas and Sora. Thus, that both can wield two keyblades in fact has an important meaning. This is also related to Xehanort's memories, but this point can't be touched on just yet."

"Furthermore, from the time that the two were both using the keyblade at the same time, the Organization itself was using Sora for their ultimate goal. Soon enough, each of the Organization's expectations differed. By changing Sora and Roxas's movements, eventually they became unable to use Sora for their true meaning. As a result, Sora became an obstacle to the movements of the organization itself and he had to be defeated. But even if Sora were to be defeated, you could say there are other things to think about in making that sacrifice. "

It seems like Nomura is hinting at Roxas's keyblades, as being 2 peoples memories: Sora and an unknown person (probably Ven). That Roxas can use two keyblades means he has two peoples memories.

 

O.O

Dragons: I never thought about that before... That makes sence. Sora can use two keyblades only when he combines with Donald, Goofy, or both... But you're missing something.
Explain Roxas's keyblades, Oathkeeper & Oblivion.
From the way I see it, Oathkeeper is a representaion of The Light. Oathkeeper was created when Kairi gave Sora her lucky charm.
Oblivion is The Darkness. Sora receaved Oblivion after returning Kairi's heart, so Oblivion was born with Roxas.
Roxas is his own soul. That became obvious when he stepped out of Sora to talk to Namine (KH2). He has his own thoughts.
So Oblivion is Roxas's soul. Oathkeeper is Sora's soul.
Make sense?
Riku's 'Way to the Dawn'. Everyone knows that dawn is the time when light emerges over darkness, so 'Way to the Dawn' is a fitting title for Riku's soul.
-_- Kairi's keyblade was still girly.

Twilight: Kairi's was way to girly. They could have used a better design too.
Riku's was my favorite. It was very fitting.

 

On that subject, the most likely reason for Roxas using Oathkeeper and Oblivion is to show his connection to Sora's heart. Oathkeeper's keychain was Kairi's good luck charm, a heart-to-heart present from Kairi to Sora. Oblivion is found in the same place that you fight Riku in KH1, and is a representation of Sora's darker friend, Riku. So, Roxas using these keyblades shows the darker and lighter sides of Sora's heart, which he says gets all its strength from his friends.

As for the keyblade theory, it is possible. But I don't think it's true. Soul Taker, Riku's dark keyblade, was a special keyblade made out of hearts made for the sole purpose of taking other's hearts. I don't think real keyblades and this fake temporary keyblade would be made the same way.

However, your point that Roxas being able to dual-wield because of his connection to both Sora and Ven is pretty good.

 

Well, incase you guys don't know, Sora wasn't supposed to get the keyblade, it was just dumb luck for him. Riku was orginally supposed to get the keyblade. I think since Riku was the 'true' keyblade master, he has the power to create others, which he handed to Kairi. :) yep.

 

wow, it makes so much sense now. and yea, Riku was the true keyblade master so he could materialize Kairi's memories/heart into a keyblade and hand it to her (or something).
but u kno whats funny, in KH2, when Sora gets his new clothes, he transforms into the valor outfit and has 2 keyblades, but goofy's still there! probly someone's elses memories.