Kurokami no Ou ~ Mahou no Tsukaenai Makenshi no Nariagari (Associated Names)

“If so, then I will prove to everyone that even someone with black hair can be strong!” Redius, born with black hair in a world where magical power could be determined from one’s hair colour. Incompetent just because of the colour of his hair, treated and tormented like a taboo child, got betrayed by some…