''When Adeline left, she took Leo with her. But Leo was a heavenly creature so she kept him hidden so as to not attract any trouble. The beast clan was loyal to her because of her favor and they also knew that their Goddess had entrusted their heir to Adeline. So with the help of the experts of the beast clan, Adeline placed a restriction on Leo to hide his heavenly breath," It was something that Cardan found surprising.
If someone else had a powerful creature like Leo within their grasp, they would do anything to turn him into a tool and use him to the full extent. But what Adeline did showed that she had no greed or expectations from Leo. All she wanted was for him to stay healthy and grow up safely.