Lea jerked upward as the bottle broke. At first he was dismayed at the loss of the potion, but only for a split second, because he heard Xion's horrified whisper and saw her covered in potion. "What? Why would I be upset about that?", he said. "And hang on, I should wipe that off; it's not meant for use on people, so no telling what it might do."

He glanced around, but the only thing in the immediate vicinity that could be used as a rag was a spare- thankfully clean- sock. He snagged it and began trying to wipe the worst of the potion mess off of Xion, not knowing that it had already don its work.

"And as to how I knew, well, I didn't really, til just now, but I figured why else would you go through all that crap with the Sundered research a couple weeks ago if not to get your Keyblade back?"