Underworld Administration

Cases in the underworld are handled by ghosts. Cases in the underworld are handled by the police. The case at the junction of Yin and Yang is under my control. My name is Yuan Ye, and I am a police officer from the Ghost District No. 3 Of the Yin Yang Road Police Station. People and ghosts live together in the ghost area. I have seen the most cruel living people, and I have also seen the kindest ghosts. I have seen the most horrific crime scenes and heard the most confusing murder cases. Ghosts kill people, and people eat ghosts. In the ghost district, there are no surprises. And the only thing I need to figure out is. Who killed whom? Regardless of whether the murderer and the victim are humans or... Ghosts.