I Returned from the Underworld to the Human World as a Underworld Boss

Xiao Han, who was originally a human detective, offended the powerful people of the underworld by pursuing a "shady case", was wiped out of his life, and was thrown into the well of reincarnation. Before he died, he made a contract with the remaining soul of the "Netherworld Division", using the soul as a pledge, to return to the world and take charge of the laws of yin and yang.