UNUSUAL...

Zhan-yu was an adopted child of the king of Human Kingdom. What happens when his father gets killed in front of his eyes on his Birthday. But comes back to him to help him again in the shape of a tattoo.

What happens next makes Zhan-yu even more confused when he finds out the truth about his father's death and how Zhan-yu has something inside of him that even his dead father who was the strongest human cannot see but knows its something even stronger than the devil.

What is Zhan-yu? So is he really a devil or something else?