[He'd rather he not react, so that's good actually. Until Chishiya notices him smiling. That's a little irritating. He narrows his eyes slightly.]

I can cook a few things.

[He mutters because he can, in fact, cook well enough to feed himself, but he doesn’t feel good enough about it to feel confident cooking for someone else.

And he definitely never learned how to make mochi or anything like that. Which she specifically asked for.]

I actually told her I couldn't. But then she seemed...disappointed.

[Even as he says it he realizes that this sounds the opposite of casual. Hm.]

Anyway, I like challenging myself sometimes.

[Nailed it.]