The Dukedom's Greatest Prodigy

Hanseong, a SSS-class monster hunter from Earth, was summoned to another world and forced to dedicate his life to serving as the Empire's hunting dog.
He lost his life in a quest to save the land, and was reincarnated as Dale, the eldest son of the Saxon Dukes. 

As the son of the "Black Duke," the continent's greatest dark magician and the apex ruler of the Black Tower, he vowed to "destroy the Empire with his own hands."

Swords, magic, and necromancy.
Drawing on the knowledge and abilities of his past life, Dale is reborn as the Duke's prodigy. Where does his talent lead? His unstoppable march begins now!