He may not act friendly toward strangers [ He won't, but Subaru can't help but soften the assertion, his fondness for his brother seeping into his tone. ] but he has a good heart.

[ Subaru knows this well, having the advantage of being his twin, someone with whom he needn't be so guarded. Their circumstances have demanded it of Kamui, he knows, and for that Subaru is to blame. ]

We haven't ever been on different worlds before, so I hope it isn't the case, but I can't sense him here. I don't know yet what that means.

[ Is it because his senses have been dulled, or something else? ]

...Is there someone you would look for, in this place?