The protagonists are three men, but they are not the entangled relationship you think. To put it simply, there is a demon (the one in the title of the book), a mortal and an immortal. According to my expectations, the system is very large. The demon is the second-in-command of the Western Abyss with explosive combat power. The mortal is a "waste character" who has been useless for a long time. As for the gods, it is not easy to describe. In short, until the end, who is the so-called righteous party is a mystery.
Purpose: It is actually a personal growth history