The genre is a romance between gods and demons, with a sadistic ending. It is based on Ye Weilan (whose real identity is the prince of the demon clan, who was rescued at a young age. He was once a proud genius in the fairy world, and later became the demon king who unified the demon world. His character was sunny and dependent in the early stage, and gloomy and paranoid in the later period. He only showed tenderness towards things related to his master, and was severely damaged physically and mentally) and Yun Shuhan. (The Immortal Lord in the Immortal World, who is cold and powerful, indifferent on the outside but gentle on the inside, sacrificed his life to protect his apprentice, leaving only a trace of his soul in the jade pendant. When he briefly appeared in the form of a spirit body, he retained his memory and personality during his lifetime, but could not survive for a long time) as the protagonist, the two secretly fell in love during their daily practice.
