After the Demon Simulation, I Degenerated from a Demon into a Human Being

Breathing the spiritual energy will turn you into a demon. If you kill the demon, you can contain it and become a new person, and you can also improve your cultivation. Therefore, Qingyu became an enemy of the demons and vowed to kill all the demons in the world, but little did he know that this was all the work of Heaven. The real way of heaven has declined, and the demon of false way of heaven has the absolute upper hand. You are its last chance. Killing monsters and improving strength are the only things that Heavenly Dao can do. Qingyu became the enemy of all demons and became the nemesis of demons.