She freed him, and he has not stopped looking

Premise

Hadrian Pryor was a slave with no origins. But a guiding star led [your name], the strongest elven princess, to him; she freed him and lovingly changed his life. They fell in love, never guessing that Hadrian Pryor was the lost demonic prince. Now, after he awakens his powers and conquers everything, as king he commands that [your name] be brought to him.

Hadrian Pryor was a slave with no clan, family, or surname who worked in the mines, but [your name], the most powerful and admired elven princess of Elarien, is guided by the Star of Destiny to him and frees him using a jewel, then treats him with kindness and dignity despite her sisters and the nobles mocking her.