Solif, born to noble parents of a major house.
He awakened his powerful magic at a younger age than others, literally walking a path paved with gold.
Though there were occasional conflicts and frustrations, most things went his way, enough to become a noble youth armed with appropriate self-esteem and arrogance.
However, ten years ago, at forty-eight years old.
Solif first realized something was strange about his life.
The trigger was discovering a scar on a distant relative's hand at a family event - the same scar as a childhood friend who had died.
"Friend?"
"Yes. One who died because of me."
In his mid-teens, Solif, as adventurous then as now, secretly left his house with a friend he'd grown up with like a brother.
It was to gain magical power on their own, build real-world experience, and see the world.
However, when they went to hunt a Masu threatening a village, young Solif realized the opponent was too strong.