Senior Sister, I'm Going to Be Possessed by a Demon

A car accident gave Jia Fu the power of consciousness, and he accidentally entered Xuanmen. Demons and spirits, good and evil in this world gradually unfolded in his life. As he made choices again and again, he discovered that what was rooted deep in his soul was sin. What is it about adhering to a good path and practicing good deeds that leads to immortality? Or will he fall into the devil's path and become the only true devil in the world?