In response to a decrease in Japan's population and an increase in the occurrence of murder, the government has decided to impose stricter penalties on violent criminals. Despite the implementation of the death penalty, it has been proven to be ineffective in preventing such crimes. Therefore, in an attempt to combat the issue, Japan has brought back the "Revenge" law that dates back centuries. Under this law, victims and their associates have the authority to request assistance from a specialized government law enforcement unit known as the "Sukedachi-nin." This team is composed of individuals who have been selected based on their past experiences as victims and are able to capture and punish murderers using corresponding methods to those experienced by their victims. Yamagishi Yuji is a member of this efficient enforcement unit.
