There really was nothing more, at least in the context that Naminé is expecting. But just in case, he looks her over again... and yes, there is nothing that he recognized at all. "...Yes." Of course, he wasn't helping his case by making this the same quiet deadpan he'd been using this entire time, making it very difficult to tell whether he was telling a lie or a truth. (But that is where we come to one of the most prominent differences between Ienzo and his adult self: whereas Zexion would 'happily' lie to someone at a moment's notice, Ienzo has not yet adopted this ideal, and usually tells the complete truth for better or for worse. Sugar-coating accomplished nothing, after all, and lies could easily be found out at a moment's notice.)