About the book: a year / Five hundred years ago the world changed. The breakthrough of creatures from beyond the world brought humanity to the brink of survival, and society had to accept new conditions, one of which was the taboo on murder. And when within the walls of a small town on the edge of the world, where people are already having a hard time surviving, people begin to find those killed, and suspicion falls on Shin, whose reputation is already at the bottom of the ocean, she has to look for the real killer herself in order to save her life.