Small, wildly different worlds weren't unusual. Tokyo was one ruined city surrounded by desert.

[ That's not the only Tokyo, he realizes. He's quiet for a beat, visibly deliberating, before he lifts a hand and places it on Chrono's shoulder. A gauntlet of worlds like this is one way to start off new arrivals like them.

Is it always difficult in similar ways? ]

I can't imagine anyone having an easy time with this. Kamui would certainly pretend, but especially when we see something familiar yet not quite ours...it's difficult.