My Father Is the Ashen Lord

Fourteen years ago, Aldar, the legendary mage known as the "Lord of Ashes," single-handedly drove back a dragon—but at the king's victory feast, he stole the royal Life Gem to save his newborn daughter Erin, who was cursed to die. He then vanished into obscurity, becoming a powerless janitor at a magic academy, enduring fourteen years of humiliation and abuse just to keep his daughter safe.