[ A rapier? That sounds impressive, and Sora wishes that he could see it for himself, but that would only be possible if they find a way to get their powers back, or if he makes good on his earlier hope to visit X'rhun's world. ]

It's called a Keyblade. It's about the same size as a sword, but it's shaped like a key. I use it to fight, but also to unlock all kinds of things.

[ Not just doors, but hearts and worlds as well. It's certainly more than just a normal weapon. ]