They watch Ryo for a few seconds once he gives his thanks, the glow of where their eyes slits of light in a room otherwise only illuminated by the falling sors outside.

"There is more you wish to say." So they come up with, but in the next beat: "--Perhaps. Is there? Or, I'm supposed to respond back in a certain way. You have to excuse me, or don't, but I don't often participate in verbal...pleasantries. In answering them. In reading individuals."

There returns the uncertainty, clearer this time than by a single word. And what are words? A work requirement. A people requirement.

"Is 'You're welcome' acceptable."