Ironically enough, telling Klaus that the coffin was ostensibly for himself would have gone a long way to actually reassuring him instead. Because honestly, big mood.

Making a point to step up along the side of Archer that isn't currently shouldering the coffin, Klaus sighs and pulls out his flask again to take another drink, electing to keep it out and in his head this time for easier access. "Yeah, okay, what's the worst that can happen, right? I should warn you though, I'm really not the brother to talk to about dimensions. That's more Five's department."

He takes another sip, angles his head just right so that he can look at Archer without catching sight of the coffin and says, "I'm not really one for wishes, what do I call you instead," and then makes a sharp gesture with his empty hand at the air beside his head like he's brushing something away, picking up the pace ever so slightly.