[That's something they still have in common, the way their speech tends to sound like a flat monotone even when they truly feel a certain way.

He's glad to hear that Nathan isn't on the street, since that was his first concern... even if he's fairly sure the white-haired young man couldn't survive with what he knows of his skill set and survival abilities. He's already planning to ask about Nathan's living situation further, but his mention of Watari gets a very, very noticeable reaction. One that even those placid features and monotonous voice can't conceal from him.]

Yes... actually. It was some kind of orphanage, or boarding school in Winchester, Great Britain. I think my Other learned Russian there, among other things. Do you ask because it sounds familiar to you, as well?