In future cities, the earth is heavily polluted. As a result, a series of tissues were cultivated in all A-B-C colonies for investigation and unknown experiments. I was thrown into the dump by the organization and have been doing boring and stressful investigative tasks for 2 years. Although I occasionally complain, as long as there are no strange incidents where you and I are cheating, it will be fine. It's just that the "person" who suddenly appeared on the floor of his shabby apartment forced him to fall off the stable track...