Human beings are born with a spirit and have no soul after death. When a person dies, his spirit disappears.
Time and space overlap, and everything is in order. If the spirit leaves the body, time and space will be confused.
The spirit leaves the body and becomes a soul. The soul remains, and the traces of time and space cannot be repaired.
Therefore, there is someone in the Chaos who is responsible for removing souls that should not exist, called "Kishi".
For whom does this soul that should not exist exist? How does the "shore" in the chaotic place remove the soul thoughts one by one?
There is a saying that calls "Historical Records" "the historian's swan song". Only after killing her soul did I know what the real swan song in this world is.