Kaiba bites his lip. On one hand, he isn't the greatest at comforting. On the other, even he couldn't stand the sight of a frightened child.

He shakes his head, expression gentler than usual. "I'm sure there's a spell they can use if it starts to get worse. Even among the people who are born with magic, I'm sure not all of them are acing their coursework. That many students would never fit in the infirmary. So as long as you're trying, you should be all right."

He suddenly pictures some of his lesser classmates suffering, a brief smile crossing his face, but that just reinforces how illogical the fear is. "The professors' job is to help you learn---if they're at all skilled, they should be able to help someone struggling. Your housemates will help too, if they're worth anything."