Young Li Haoran tragically died after being ruthlessly betrayed by his teammates in a battle against demonic beasts. However, when he opens his eyes again, he finds himself reborn as the Blood Demon King in a tribe full of succubi. On top of that, he has acquired a special system that allows him to grow stronger simply by building a harem. This time, he will seize the opportunity, forge himself into a true demon, and lead his harem to conquer the world!
The sacred heavenly gate looms high in the boundless sky, while the abyss of time and space wreaks havoc upon the world. As twelve spiritual springs rise from the earth and the moon slips beyond humanity’s grasp… where will our destiny lead? The realm of gods? The domain of demons? No, this is a world that belongs to humanity! I will claim the crown that no one else dares to bear and rise as the king of a new era. My name is Ren Jie, and to live is to be extraordinary!
Cain von Euclid, grandson of the First King who unified the First Continent, learns from his respected grandfather that he is destined to become the strongest villain. Being unable to kill his grandson, the grandfather takes Cain on a journey to make him strong enough to overcome his fate. For 13 years, they travel across the Second, Third, and the Fourth Continent, where Cain achieved tremendous power. Finally, Cain sets off on a lone adventure where he meets many people who influence him. Will he be able to defy destiny and avoid becoming a villain?