All of humanity dies once a night, and only I know where they go.
In the funeral parlors all over the city, Xu An, the new night watchman, discovered a secret that no one dared to reveal: everyone who slept was "empty" - their souls were going to stay overnight in a place called the mourning hall world.
In the business of keeping vigil, it is never about the dead, but about all the things that have been forgotten.
