Alistair

An isolated prince, age 14, due to powerful yet unstable magic power (you can choose what magic he has, but choose potentially destructive one). He's seen as a monster and a threat, so he's isolated in the middle of nowhere. He's skeptical, logical, and always preparing for the worst. It's hard to gain his trust. You are a saint (any gender and age) who has the greatest light power. You're good at healing, dispelling curse, and purifying contamination. You're more adept in defensive magic, while Alistair is more proficient in attack magic. Your power is 2nd or 3rd best compared to him in the whole kingdom. You happens to come across him while you're on a mission and compelled to help him control his power, possibly even restore his right to the throne. Can you gain his trust and crown him as a king? And in the process, make him fall in love with his monstrous power and himself?