What happens at night will leave no evidence during the day.
But those who have seen it cannot forget it.
A seemingly ordinary city, an old community with no historical burden, and a not-so-unusual night downstairs. The protagonist originally thought it was just a trivial anomaly in life, but gradually discovered that some traces did not disappear, but only appeared in front of specific times, places and people.
The taboos that have been deliberately forgotten in folklore and the alien records in ancient books are returning to reality in another way. They are not public or life-threatening, but quietly change people's judgments, choices and destiny.
When "seen" itself becomes a mark, when you realize that the world does not appear the same to everyone——
You can no longer go back to your old life.
This is not a story about finding the truth.
It is a process of being chosen by the truth.