The Eighteen Levels of Hell Are All My Godfathers

Wei Yan, who traveled to the parallel world - Nether Realm, was recruited by the "underworld" organization set up by the Wheel King of the Underworld to treat his terminally ill father Wei Changhe. Wei Changhe fell into a coma after taking the medicine, and Wei Yan ignited the evil spirit fire in his heart. He accidentally fell into the eighteenth level of hell, and was adopted as his adopted son by the ghost kings, the bosses of the eighteenth level of hell. He then showed off his skills in the Netherland and was promoted all the way! Later, through the "Little Widow" Ju Wanru, who was in love, he discovered that the "Underworld Organization" directly refined the souls of the dead into "soul crystals" in order to solve the overcrowding of hells with ghosts. The special medicine Wei Changhe had taken before was the powder scraped off the soul crystals! On the one hand, he needs the soul crystal powder to extend his father's life, and on the other hand, he needs to maintain the order of reincarnation in the world. Will Wei Yan end up colluding with the underworld organization? Or should he betray the organization with the little widow and fight against one of the ten powerful Yamas?