It disappears that's it, but there are copies of them.
They dissolve.
Only the Emblem Heartless (the ones marked with the red-black heart) release hearts when destroyed by a Keyblade.
Because it was his understanding that Sora and Riku were the only wielders of the Keyblade.
Because Roxas is Sora's Nobody.
yes, because since Sora wields the keyblade that means that his nobody also wields the keyblade. Also, another way that Roxas is sora's is if you take out the X in Roxas and rearrange them you get SORA.
It is a keyblade that can only be found in kingdom hearts 2.Sadly,it can only be acquired in the final mix,and you can only get final mix in japan.
Roxas was created when Sora stabbed himself with a keyblade. So, he is Sora's nobody.
... do you mean Xion? If so, Xion isn't Kairi's nobody, Namine is. Xion is simply the result of an experiment in Castle Oblivion on Sora; she's an "imperfect replica of Sora". That's why she's able to wield the keyblade
Nobody did
As Axel explained to Roxas, Heartless that are destroyed not by the Keyblade regenerate back into Heartless. However, the Keyblade has the power to release the hearts to Kingdom Hearts.
For right now nobody knows what the name is even i dont know...................yet
On the night of the second day on Destiny Islands. A storm happens, and you have to find Riku's outside. Shortly after, you get the Keyblade. Note: Until you get the Keyblade, don't try killing the Heartless, the wooden sword can't harm them at all.