The mornings in Canini Shore had always been the most peaceful, but Nicholai didn't even get a shut-eye the night before. He kept on staring at the ceiling or fusing his senses with the flora to wander in the Estate that he built with his own resources.
While it's true that he had not used his father's name on anything, everyone who met him had always weighed in on this truth while dealing with him. He was always the son of the Cosmic King, and it was enough for him to do what he liked. He never had to present himself as the Rogue King because it had always been enough.
If he thought about it, he wasn't much without his father's blood, without the bloodline abilities of the Rudolf family… without the kind of power given to him by their ailing mother. Perhaps Darius was wrong to assume that he could be what he was without being the son of the Cosmic King.