Sign in to Become a Boss in the Demon World

Su Bai traveled to a world where demons and ghosts were raging. There were spiritual beings who could turn mountains and seas, a demon king who could destroy cities, a murderous demon king, and a ghost king who was full of weirdness. Su Bai has no cultivation qualifications and can only be reduced to the guard of the Demon Suppressing City. He is in constant fear every day until the sign-in system is activated. Congratulations on your successful sign-in at the sixth-level and third-level death place. You have obtained...