Huh. He doesn't really get why she's in suddenly such a good mood, but Chikusa won't question it. If she wants to tell him, then he figures she will. Instead, he watches the meat grill, waiting as patiently as he can.

The offer knocks him out of it, eyes flicking up to her. "...I wouldn't mind. It sounds like something that would be useful." Sign language isn't the kind of thing that everyone knows, after all, and so it would mean having a silent secret weapon.