The Heavenly Demon’s Descendant

Briefly about The Heavenly Demon’s Descendant manga: 

Jin Soo Ho lost his mother when he was a child, so he became a hunter to avenge her.

Read The Heavenly Demon’s Descendant Manga.

He dedicated his life to training, yet he never advanced past B-rank.
Su Ho encountered a mystery figure at the Red Gate one day who identified himself as a Heavenly Demon. He informed Su Ho that he was his ancestor and requested that he give him his physical body in order to overcome his adversary, the Blood Demon.