Vivi listened intently to the fairy's explanation of Negari, growing rather worried at the prospect of a monster that seemed unaffected by swords. Only magic could hurt them? That was a frightening prospect, and Vivi could only hope he didn't run into one. He doubted any spells he knew of were strong enough to work.

Upon declaring Yuki to be a magical girl, the black mage faced the confetti-covered girl once more, head tilting slightly, "...does that mean you're a mage too, Miss Yuki?" he asked with some surprise. He'd never met another person like him, and... that was still the case, really, but an actual magic user? Even his grandfather's brand of magic was completely incomparable to Vivi's own.
The young lad was slowly losing some of his nervousness as they talked. Between Yuki's gentleness and the fairy's cheerful disposition, it was putting the lost magician at ease.

"And, um... thanks for the explanation, Miss... La...lalalai... lalo..."

The poor boy's formality was now proving quite the obstacle.

"...Lalelulilo... lillio?"