[There's no reaction at the actual approach or the sound of the door, but the sound of his name gets a faint one -- the muttering abruptly stops. There's a tension running through his frame that ratchets up from where he's digging his hands too hard into his hair and curls him in a little tighter where he's sitting. Luckily, his hair was a rat's nest in the first place.

No verbal response, but no more door-slamming either. Progress, perhaps.]