My Past in the Underworld: the Years I Was a Ghost Officer

The modern world coexists with the underworld. The underworld has a strict organizational structure and social system, like a mysterious country hidden in the cycle of life and death. The protagonist Jiang Xiaoye, whose parents died when he was young, lives with his sister. In order to save his sister, he went to the underworld to work as a ghost. He relied on optimism and tenacity to crawl around in the underworld.