[he appears to be mulling that over for a few minutes, silent... silent... then he just shakes his head, looking quite satisfied with her answer.]

That's not any memory of mine. And as far as I'm concerned, Xion, as long as you've got memories of your own, it doesn't matter who or where you came from. You have the right to keep the memories you've got, and to make more.

[Sora doesn't remember it, but he'd already promised something similar to the girl Xion looks like right now. they'd meet the proper way. make their own memories. maybe somehow, unconsciously, that's why the idea comes so easily to him.]