[The skepticism gets him to offer a small, reassuring smile.]

That's okay. You don't have to do it. [But... Squall knows (""knows"") Sora, so... maybe if he explains it.] My keyblade. It can turn into a glider. It's... [Weird even now to be able to so freely tell others this.] ...how we travel between worlds.

The glider is... connected to me. [He touches his chest over his heart.] Because it's made from my keyblade.