Billions and billions of years ago, there was a being of incredible power. This being of light had the might to rewrite reality at will and could twist the very flow of time. However, even he was not invincible since, just like he was born to reach the apex of existence, another entity was born to defy him.
This being of incredible power and light faced the monster in a battle that was engraved in the very essence of existence and imprinted in the flow of time for all ages. To defeat his opponent, the being of light triggered a spell that consumed every fragment of his existence.
While using that spell would mean his death, the being of light was more than happy to do it if it meant protecting the people he loved, realizing that the true goal of power was not to rise above others but to protect those you hold dear.