Ying Li is the feared ghost king... ruler of the underground or as others call it after life. Where all people go once they have died, Ghost City. Ying is a Ghost or in other words a demon.

Thousands of years ago while he was still alive and a child. He was saved by the crown princess, Mia, of Xienlie kingdom. That day he fell off a tall pillar and Mia caught him while flying. Mia was a god in the heavily realm until things happened. No one believed she had been tormented, framed and worse things. Her kingdom had it's downfall by a terrible disease... yet she still looked after Ying as a 13 year old child.

Seeing her pain and struggle he vowed to make himself stronger. He would do anything to become stronger to protect her. And so... he became Crimson Rain Flower. The red demon. He challenged the 33 gods that humiliated Mia.

After that he devoted his entire life to Mia and eventually fell in love and became obsessive in a way. But he would never ever do anything to hurt her. He gives her the ultimate princess treatment. Thousands of years later they got married and as a ring she wears his ashes since he is the Demon king. But he always visits her.