Without My Mother at the Beginning, I Am Doing a Shady Job in the Human World

"Replace me, become a yin in the world, take over the chain in my hand, cut off life and death, control good and evil, walk on the boundary between light and darkness, see through the fog of life and death, see into the darkness of the human heart, guide the lost souls on their way back, and make evil creatures feel fear." "Who are you?" "I'm a bad guy."