Underworld Clerk in the Human World

What a cheat! Although I came back from the dead, I still have to work for the underworld. Therefore, I had no choice but to become a staff member of the social work office of the underworld in the human world. I wandered between the Yin and Yang realms every day, working for the underworld to repay the Yin debt I owed after resurrection. Of course, just when I thought all this was a coincidence, I discovered that I had been involved in a huge battle from the beginning...