Cultivation and mana

By chaos, the world began to be invaded. One day, gates suddenly appeared in the world, unleashing monsters upon humanity. The situation brought humanity to the brink of extinction. The martial world of "Eun," the world of magic and knights "Einhart,

Certan was the prince of the demon world who wrecked havoc a long time ago. His father, the king of the demon world, had his soul sealed in an octagonal tablet and he sent to the human worldBy accident, he got stuck with a boy named Go JinyoungLet's