I Was Born a Spirit Eater, so I Must Be a Demonic Witch.

[No time travel, no system, no love, single female protagonist. He conquered the nine provinces and destroyed the immortals, and devoted himself to killing the nine heavens. The Immortal Sect controls the ascension passage and obliterates all "abnormalities". The girl Lin Xiaoman has a secret that even she herself does not know. If this matter is leaked, it will definitely lead to death. But an accident happened when she was sixteen, and the entire Nine Provinces Immortal Sect wanted her to die! Master Shen Wangshu tried his best to protect her, but the two of them were weak and fell into the trap of the Immortal Alliance. Pursuit and escape, survival and challenge, how should the young cultivator resist the millennium siege of the Immortal Sect? Who has the final say whether it is a fairy or a devil? The soul-eating demonic body awakens, and the demon king returns - it's time to change the rules of this world...