In 'Epitaph', a city where religion is the law, it is roughly divided into two worlds: one is the "non-inverted world". To put it more simply, people can live freely in different parallel worlds through science and technology. What is more special is that the origin of the "non-inverted world" is not because of "technological power" or "happening", but "it exists" originally. The other world is the "surreal world", which is the decayed world in which human beings live. Therefore, human beings can only rely on the "non-inverted world" to satisfy their desires. However, compared to the "non-inverted world", evil spirits cannot survive in the "surreal world". They can only come to the "surreal world" by constantly eroding human beings and possessing them. Therefore, in this world where human beings long for "inversion" and evil spirits long for "reality", plus the seven demons, seven angels, seal masters, alchemists, puppet masters, black magicians, and artificial beings including seers and other industries (it can also be said to be families) are constantly prospering, then what will happen? . . . . .