Nyx breath was still as he was internally working to come to terms with the fact that Lunafreya was also here, just as he had done with Noctis being here in this strange land. Prompto.. that was a different story. But the Crown was here, and they could be reunited. Internally, Nyx felt the pang of uncertainty that was immediately shoved aside. Nyx had his duty to maintain and a job to do. The man had no room for his own feelings on the matter.
The touch from Lunafreya brought Nyx to real world, as he stood up. Staring at her was surreal. It felt not long ago, he was staring at her in this same manner telling her that he was the hero of the story and she had greater purpose.
"Princess, you have nothi-" He went to correct her, and then she mentioned Libertus. That lost man was devastated when Crowe died. Made mistakes, but did right in the end. He did miss his friend. "To be fair, Princess, I had broken that promise first. We both know I wasn't leaving that city alive." Or intact.
Nyx looked to the dog wagging his tail, and admired the good companion. Bringing his attention back to Lunafreya, Nyx offered a small smile. "It's good to see you well." Was she well? They had both given their lives to the cause. This made Nyx fairly uncomfortable.