He could not remember any face, but he received a photo of his mother standing in the fog twenty years ago - and her mother had "evaporated" for twenty-one years.
Before the winter solstice, the detective arrived in Kirigakure Town silently. There are seven names on the archway, the eighth notch is forming, and the handwriting is as fresh as yesterday. There are no corpses here, only "people who haven't come back yet"; the night watchman enters the fog every twenty years and never returns, and the fog will imitate the people you know, learn your heartbeat, and let you see your dead relatives in the tea.
Silence discovers that her mother was once a visitor, and that she is the sacrifice that Wu is waiting for. On the night of the winter solstice, he must choose: become a night watchman and be lost forever, erase all memories and become "normal", or take over the power of the fog and continue this lie.
But first, he had to confirm that it was not him who came out of the fog...
