The King in exchange for peace and stability has used his childlessness as a diplomatic tool…. that Harald had to admit very potent in acquiring alliances and extracting promises.
In the course of the King life he has dangled the prospect of the succession in front of too many people
There is the family of Botticelli in Freya, the King of Zettel in the west and the most formidable of them all…the dragon that still sleeps in the Northern side of Vangua. And one last person...himself.
Harald understand the King logic but he doesn't have to like it. Of course during the King life, he kept this various power friendly while he lived but he should have realized he is storing up immeasurable problems for the future.
Duke Arial, for one, had indicated even though he acts subtly, that he is serious in this matter.
Harald understand the problem that lies in front of him if he were to take the throne that is promised to him.