[How what is just about right, as seeing his little brother was pretty much on the bottom of the list of "people he was expecting to run into", especially considering he's very much dead and you're very much not.
His shock is quick to morph into heart-stopping worry, as it so often does, trying to squash the sudden burst of warmth he feels, because whatever place this is and however they're both here, you shouldn't be anywhere else than on your ship, with your crew. He's dead, can he even protect you here?]