[He looks up the moment she calls out to him, despite appearing to be rather out of it. Though at the same time, as if becoming aware that he must not look very well, he straightens up and smiles. It's not a very believable one, though.]

A-Ah, yes, I'm all right. I must have been sitting for too long and my legs fell asleep. It surprised me a bit when I tried standing a moment ago...