Mithrun is just opening his mouth to answer that (likely with some uninvested assurance that Sylvain is doing fine) when he hears that knock on the door and looks over, apparently in no hurry to get his dick back in his pants before his boss opens the door.

He shrugs. "It was his idea. I finished sweeping first."

And then he looks down at Sylvain. "This is Angeal."