Nephilim

Crom Redbeard and his Silver Horde are tasked with slaying a demon trapped in a mine of the Kingdom of Myridonia. When they fell the demon, they don't expect what happened next when the demon transformed into a She-Angel nor did they expect her to give birth in the next moment either. Before taking her last breath, she names the child Gennin. Taking the child and the slain angel, Crom seeks answers from an Elf Witch and she tasks him with raising the child and without hesitation, he agrees. Years later, Gennin is grown up and a willful young lad who has the stubbornness of dwarves and the agility of his elvish and angelic origins. When Crom falls ill, it's up to Gennin to find a cure but nothing is as it seems. The task thrusts him onto a journey in which he meets many. But little do they all know that of the threat of their world, a dark wizard serving a demon lord who seeks to consume the world in fire and darkness.