I Picked up a White Fox on the Way to Escape, and It Turned Out to Be the Empress?

He is a human, but he lives on his knees in the human race simply because his father is a dragon and his mother is a human. His father was missing and his mother was murdered. The Human Emperor didn't care about her, so he had no choice but to flee from the human race and go to the demon realm. The fox demon empress told him to stay and protect her until she died. I picked up a white fox on the way to escape, but I didn't know that this white fox was...