That gave Lelouch pause. Nunnally was, he knew, an excellent judge of character, if occasionally clouded by naivete, so if she liked Yuffie... but it wasn't enough to prove anything just yet. Lelouch would simply need to keep an eye on the girl, and that went double if they were going to continue interacting with one another. Maybe he should arrange to be in the arts and crafts room when they met-- he would have done that anyway, of course, but the thought was more insistent now. Could he trust Yuffie around his sister?

"She's more observant than she lets on," he said finally, his forehead creasing. "Don't take everything she says at face value, and try not to tell her more than absolutely necessary. I doubt she would do anything to deliberately endanger you, but..." It was impossible not to worry.

Eventually, he shook his head and smiled a little to show that the serious moment was over, and almost as an afterthought, he added, "What about the other people at the institute? What do you think about them so far?"