[He's too busy with beaming at them through the journal (for now, because he's sure as hell already hastily throwing a jacket on to run out of the room to see them) to present any kind of composed front - for a moment, at least. Because soon enough that bright smile is shifting into a cheeky grin, head tilting back slightly.]
Well, if this don't count as a cheerful reunion, I sure got no idea what does.