When they get there, Quatre ducks his head through the door to glance down the (empty) stairs, and closes it quietly. It doesn't have a lock, but privacy norms in the house mean they'll at least get a knock of warning.

His right forearm is leaning against the doorjamb for the moment, as he turns back to face Trowa, and smiles with a sudden, almost bemusement.

"Hi," he says, processing this change; after a moment he moves his right hand to touch Trowa's left elbow, and steps closer.