[Her smile doesn't do much for his nerves, though. He still fidgets with his tie. Yes, he is fully dressed in his tie and everything, even though he is resting.]

W-Well... S-Sensei used to cook a little a-and Reisen-san b-b-but it was f-for everyone.

P-P-Perhaps i-it is different i-in the world y-y-you're from b-but I-I was a s-steward a-and a housekeeper.

[To have a lady cook for him and him alone was unheard of in his mind, specially if he wasn't seeing them or in a relationship with them. Even though the world around him changed, he still kept some old ways... quite a number of them, actually. Oh, his nerves.]

I-I-It's just inappropriate for a young lady s-such as yourself to cook f-for someone like me where I-I'm from.