Davis had already cleared the Immortal Grade Trial of the Earth Dragon Immortal but it threw him out saying that he was an anomaly. He garnered that there wouldn't be a new person who could inherit the Immortal Inheritance any time soon.
So the one with the highest likelihood to inherit its Immortal Inheritance would be none other than Princess Isabella since she had cleared the Emperor Grade Trial recently.
He even had the thought that the Earth Dragon Immortal would support her in her endeavor to clear the Immortal Grade Trial. After all, it had lamented to him how it wasn't able to find a suitable successor after all those years.
However, he didn't know that he was right on the mark!
The Earth Dragon Immortal did indeed favor Princess Isabella and her confidence to reach the Immortal Stage in this lifetime precisely stemmed from this matter.