[ It's strange, for his existence to be accepted so easily, but he absolutely doesn't mind. It's far easier to just skip all of the fear and apprehension. And so, he laughs a little, but it's warm and friendly. ]

Well, it is quite exceptional, I must say. I have been a servant before when summoned, but this was the first time I was a butler, and I've not heard of any other demons doing the same.

[ season 2 of kuroshit doesn't count ]

But yes, the lord of the manor knew, as he was the one that summoned me. He was the only one, that said.