Gwonwangjeonsaeng

In a world where humans enslave non-human species, the powerful wizard Leppenhardt creates an empire to safeguard these beings. However, his reign ends when he's defeated by the brutally strong Tesron, the "King of Fists." But death isn’t the end, because Leppenhardt awakens in Tesron's young body! Now armed with incredible strength and a new identity, he sets off to free the non-human races again. Can the new King of Fists reshape the world for all, or will his second chance slip away?

(Source: Tapas)