"The King didn't become the king of the kingdom because he sincerely fought for it. He had the position in his hands the moment he was born. The King never actually had to fight for anything or struggle hard to gain the love and appreciation from his people. He was a man who followed the path of deceit and forgot about the morals and responsibilities of a true king.
Unlike him, the First Princess was not only raised to be a queen but was also taught about the morals, the qualities, and the responsibilities of a king. The Emperor and the Empress raised both their daughters as the next heirs of their empire.