Being born into a royal family was one of the worst things he could have happen to him especially given the circumstances he found himself in. Originally the birth of the prince had been something to be celebrated but his own birth had been anything but that. What was supposed to be twins ended up being a single child and even then his size had been only four inches which later increased to eight.
Tests were made on the young prince and they found his mana pool had been far from ordinary, it was enough that he could potentially make up a third of the kingdom's population in terms of magic capacity. The prince learning to cast magic had proved to have been done with relative ease, though it seemed to drain his stamina rather quickly likely due to his size was something researchers could only assume. Another side effect seems to be that the damage induced by offensive spells are reduced compared to normal casters; however, seeing as many others face issues with imagery it was dismissed as such.
Even while being only eight inches, a prince is a prince. Thus he was a public face that the kingdom would be known through portraits at first. Eventually a temporarily solution was found among a close net of people, they were able to come up with a way for the prince to assume a normal size for a temporary amount of time. What had been the solution? The enlarge spell, though its been modified and requires to maintain a clear focus as he's enlarging every part of his body constantly after every minute. Meaning there's risk of having it dispel from either lack of focus, careless timing, magic negation items, and even consciousness. Still it helps him maintain an appearance of at least five feet and eight inches when using the modified enlarge spell.
In an attempt to maintain a rather friendly public image he started to support events for commoners, donating to charity, even granting education rights, some might call him the Angel of Adelure. In reality he does it all out of fear of one day being discovered in his shrunken state hoping to build up enough good karma that people wouldn't snuff him out when spotting him in such a state.