In 2022, Japan implemented a regeneration method for non-workers. Individuals without income for more than six months could undergo brain rewriting at a designated facility. Tatsuya Kamijou worked for a foreign investment company until he lost his job. However, instead of being sent to a facility, Tatsuya was sent to a concentration camp where he experienced brutal treatment surpassing brainwashing and training. The reason for Tatsuya's placement in the camp remains a mystery.