The corrupted demon princess can't possibly be the righteous senior brother.

On their wedding night, the corrupted bride, Demoness Gu Changge, the former senior disciple of the Free and Unfettered Sect, miraculously regained her senses. But it was too late. Her hands were already stained with the blood of her fallen friends; the sect she had sworn to protect had been utterly destroyed by her own hands; and the devastation of the world was largely her doing. Self-reproach, guilt, shame, and anger… What should she do? Could she, so twisted, depraved, and sinful, still have the right to call herself the senior disciple?