After I, a 996 worker, died suddenly from overwork, I was bound to the "Underworld Justice Enforcement System." I earned underworld merit to "come back to life" among the living as a courier. From then on, I delivered packages by day and "delivered" vengeful ghosts by night. Then, in a haunted house, I ran into the renowned occult master said to kill without batting an eye. He grabbed my wrist and said, "You smell like the dead."