This is a sweet love story.
The male protagonist Jiang Fei is a well-known monster who drank with King Wu of Zhou and fisted with Master Zhong. There is no bloody plot such as having the monster's heart stolen, his lifespan shortened, and his magic power limited. When entering modern society, he would rather be an ordinary person but have to wait for his lover to live and die.
The heroine Yao Yang is the biggest bug in the Three Realms and Six Paths. She does not adhere to goodness and saves people with her life. She is rational and cunning but is crazy about love and other bloody plots.
There is only love between the male and female protagonists, not killing each other.
Of course, what I said above is all false.
Brothers, do you eat sweets? The kind that lasts until no one survives.
Purpose: If gods and ghosts exist, there will be justice in people's hearts.