Evil Spirit Apocalypse

Animals will turn into "demon" after death, and people will turn into "spirits" after death. Generally, spirits will return to the "superior world" after leaving the body, but there is a kind of spirit that is the opposite. After they leave the body, they will wander around the world and kill the people they hated one by one. We call them "evil spirits". If there are evil spirits in the world, then the Si Realm will send out "spiritual killers" who hide in human society. They have extraordinary abilities and work secretly without anyone knowing. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.