The words 'not pure human' were not taken seriously by the Grand Marshal. Anything involving his wife was his top priority. He wouldn't mind becoming the world's enemy for the sake of his wife as long as he could protect him. Wasn't Hei Anjing doing the same thing when he was collecting his soul fragments? This is his time to protect his other half from anything that can or may harm him.
"Look after that egg properly, Roi," he said, looking at the black dragon curling around the silver egg.
Rawr~