Lin Shuyue, a sickly orphan girl in Kyoto, was forced into a blood contract by the vampire regent Xiao Chenyuan because of her special blood quality. She thought she was a doll to be slaughtered, but in the life-and-death situations, she dragged Xiao Chenyuan into love with her gentle and graceful appearance. From the "blood-taking tool" to the "heart scale", the two were repeatedly involved in the old grudges of genocide, the suspicion of substitutes, and the conspiracy of family and country - he used his thousand-year-old frozen blood to melt her, and she used her sick body to hold an umbrella for him, and tortured her to the point of torture. At the extreme, it is the determination of cutting off the fingers and burning the contract. At the peak, it is the strong reversal of "even if you are a vampire, you have to kneel down and beg me to live", and finally ends with the taboo redemption of "I drink your blood, you eat my bones, and we will live and die in the same hole from now on".
