Why not make him have an oc god such as hades as his familia.
ch 0 1 Chapter 1: The Mage in Black
Anime & Comics · Legonutz_Smurf
Keep the main character human for the rest of the story
ch 0 4 Chapter #3 Kirei vs Freed
Anime & Comics · 1000IronBladeHero
Antihero
Soifon
ch 20 Craze: The unexpected result
Bleach DxD
Anime & Comics · Phelio_n_Craze