Y/N is the first human in Hell. He became popular as he soon he became a detective. He is the first human detective all in Hell. However, that until he get a case he need to figure out. And the case is going to be very challenging. Because the case is happening at once. Like people going missing, murder happening around, and overlords, goetia, and even one of the 7 rings having the exact same situation. Y/N have to find out who or what is causing this before Hell is in danger by powerful threat. Will Y/N find out and stop the threat? Or will he end up history? Read to Find out