The True Prince of Daein

What if instead of meeting Ike, Soren meets a young noble girl from Daein named Adeliza. Adeliza shows him kindness and invites her back her home, where he agrees to stay. Only to return to Daein with her and her family and be reinstated as Prince. He thought being prince would be easy, until War breaks between Crimea and Daein and he and Adeliza are forced to take opposite sides.