Energy/consciousness life forms from distant planets with harsh environments (tentatively called "pseudo stars" or "shadow eaters"). It cannot directly exist in a physical form for a long time or operate efficiently in the normal universe. It is necessary to parasitize/simulate intelligent life forms (human beings), and activate and absorb the powerful mental energy ("evil wave" or "entropy energy") generated by the host and surrounding individuals when extreme negative emotions (especially the "evil of human nature" caused by murder, betrayal, fear, etc.) Erupt to maintain existence, repair damage, and enhance strength. As Lin Mo, a junior in the Department of Psychology, how to use special abilities to find clues from the victim's last perspective, piece together the truth, stop the fake person, and at the same time face the darkest corner of human nature.
Invasion method: Initially, tiny "seeds" or "spores" may be dropped through meteorites, probes or some kind of space cracks to find suitable hosts for parasitism.