"You have, but I think that was to be expected after the fight you went through."
As unpleasant as it might be for Ryuutaro to be alone at this foreign place, he understood how badly his boyfriend needed the rest. And it wasn't like he could not manage on his own.

"I'm settling in though, I think."
Or something like this. At least he didn't feel horribly misplaced anymore and it was easier to act as usually, walk like he owned the universe, even when he didn't.