For a boy to go from Prince to King

For a King to earn a right of Claim

How Exactly must he Change?

Donglim has reigned as King for three years, but has had no real power or accomplishments to his title. Instead, he goes through the motions of a ruler and passes his days idly and with little interest in anything. When his sovereignty expands to the south however, a once mythical presence resurfaces and sends him on a holy mission in search of a new truth.