Sign in to Cultivate Demons, I Am the Enemy of the Whole World

He traveled through time and became the first disciple of the righteous sect, but because of his practice of magic, his cultivation was abolished, his position as the first disciple was deprived, and he was imprisoned in the Netherworld Purgatory. Ye Xiao panicked a lot. Fortunately, there was a sign-in system. As long as you sign in at different places, you can get various rewards. But the Netherworld Purgatory imprisons all great demons. If you sign in at such a place, the things you get will be evil. So, he really became a demon cultivator. Ye Xiao said that she just wanted to survive until all righteousness in the world was gone before she left.