Guardian Dragon
It was required of all future Kings to learn at a younger age since a Dragon King could die at any given time.
My father became King when he was only ten years old, I became King shortly after I turned eighteen. His father had become King only a few days after he been born. While technically my grandfather had been too young, someone had stepped in to take the role of King at four years old.
Dragons matured faster, so it wasn’t unheard of for a child to run a Kingdom. Unlike humans, Dragon Shifters could talk and walk within the first month after birth. Our brains develop quickly, so we never truly get to have the kind of childhood that humans get.