[Hearing the coughing from the doorway alerted him to another person's presence. Anticipating what the complaint would be he tried to preemptively strike by calling out with the following:]

If you're here to complain then stow it. Repairs should only take a week at most, then you can return to your boring, uneventful exist......ence?

[The latter part of his diatribe fell away into more of a question when the dust settled enough for him to really get a decent look at the girl standing there. Jaw gaping open, and his breath hitching was the most overt indication that he had actually realized she'd been absent and that he was shocked to see her. Her question helped him compose himself, some.]

Heh- you don't have to worry about that, apparently the void is as opposed to progress as you are. [What that was a reference to, exactly- he left ambiguous]

[Kaiba was no whiz at this either, so rather than saying I missed you, how have you been, is everything alright? he fired back with something else] Where the hell have you been?! [So much for trying to maintain his usual indifferent calm exterior. He hadn't given her permission to leave, or something and it was very inconsiderate of her to do so unannounced]