[Hmm. Is that really the case...? Well, it's certainly possible that there are other dark magic users in their class that Hubert doesn't know about; it isn't as though he's all-seeing, after all. Regardless, he wordlessly turns back to the shelf and glances through the tomes - the one he picks out is a familiar one that he knows all too well.]

Intermediate, you said - this should suffice. This classmate of yours shouldn't have much trouble with the selection here, should they wish to browse personally next time.

[It isn't sarcastic, but it's pretty obvious that he doesn't entirely buy that this is for a classmate. Still, the book he holds out for her is for intermediate study, so there's that...??]