Sora flinches, takes a couple of steps back, and summons his keyblade almost before thinking, bringing it up to meet whatever weapon this person is packing with a metallic clang that sends vibrations through his hands. A sword, that's live steel. Okay. He's almost dizzy from the adrenaline, but at least he's still alive. That's step one.

He's trying not to hyperventilate from the surprise. He pushes back, trying to break the lock. He looks this person dead in the face, not registering that he recognizes it until his brain catches up to reality.

Link?

"Hey, it's me. Link, it's me, Sora." He's sure he told Link his name a week or so ago - he remembers them sitting on Aziraphale's bathroom floor, finally really getting to know each other. He'd be able to pick him out from a crowd by now. "Link, wake up!"