Bai Wuchang Checks In at the Supernatural World

Protagonist: Xie Bi'an, the underworld's chief White Impermanence for a thousand years. After a System bug sends his soul into the body of a college student with the same name in a bizarre world, he finds himself saddled with dead parents, debt, and a death caused by a terrifying entity. On the surface, he's a laid-back student; underneath, he's a workaholic underworld enforcer who upholds the laws of yin while knowing when to bend them. His catchphrase: "Under Chapter X, Article X of the Yin Laws... Never mind, we're short on time. Let's just exorcise it by force."