Human history as we know it may not be complete. A mysterious and powerful community hides under the surface of people's daily lives. They have the ability to change the entire world, but they keep their identities secret. There are many records of them in human history, calling them immortals, ghosts, and gods.
They are composed of four ethnic groups: Linyan, Jianyin, Shadow, and Spirit, which respectively correspond to human nature, body, personality, and emotions.
Conception: