When they first met, one was a prisoner and the other was a murderous demon.
When they come into contact again, one is a powerful prime minister, while the other is a "dark enchantress" who has changed her color after hearing about it in the world.
Cold and noble like him, cruel and cold-blooded like her, the initial bond was just "your blood is very fragrant".
Since it smells good, how about exchanging blood for life?
A transaction driven by boredom caused a bloody storm in the world, and Chao Gang should have been in chaos long ago, right?
In this troubled world, who's heart is also in trouble?