Listen, learning kanji is good for her... For any of them, really, as far as Chikusa can tell. The names of shinki, after all, are based in kanji. If they're going to be practicing any sort of spellcasting, at least on this level, then Chikusa knows they need to have a solid grasp on it. It's a good thing that he's already become familiar with it himself, and has only made strides to become even better... He isn't going to fail on such a simple step.

At her question, he chews thoughtfully. "I think... Bind would be good enough, for starters. It's the one most useful on an immediately level." Stopping someone in their tracks? Always a good move. The 'shutting up' part he can figure out later.