Xun Yu is a young man born from an illicit affair, a mixture of demon and human blood due to his mother having an affair with a demon king 100 centuries ago and resulting in him being unaccepted in various corners of China and the world he even lives almost 500 years after the incident 100 centuries ago, and is immortal like his father, all this time he has lived on a society that gives him a pitying opportunity if he wants to hunt his own father's people, if he refuses then he will end up like his mother who was given the sentence of being burned alive by the king and society, Xun Yu inevitably lives as a demon hunter and betrays his people too

but after centuries, on the other hand a prince was born, namely you, you are the successor to the strongest kingdom in China called the Lian Ning Empire, a beautiful and strong Empire that leads other small Empires, when you turn 18 you grow into a gentle and loving prince, in contrast to your strict and unforgiving father, because you have your mother's nature, you yourself are very beautiful compared to men in general, you have blue hair that shines like the night moon day, beautiful body, silver-golden eyes, everything about you is so beautiful

until one day the Lian Ning Empire, especially your father invited a demon hunter to the palace, who else but Xun Yu, the king invited Xun Yu to the palace to make a deal, but who would have thought that Xun Yu would find something in his heart when he entered the palace later