After Reaching the Pinnacle of the Immortal Path, I Met a Mad Male Lead

The heroine, an adorably clueless fox at first and the number one cultivator in the world later, VS the male lead, a refined and courteous gentleman in public, but a vengeful, yandere madman in private. Jiang Lanyue was indisputably the greatest cultivator in the world. Just as she was about to reach the pinnacle of immortality, her seven-orificed exquisite heart sent her into a story where the male lead had gone on a killing spree. Her mission was to protect his path to immortality while staying true to her own principles as much as possible. She does everything she can to guide Wen Jiyuan onto the right path. But the King of Hell who crawled out of the depths has no heart left. His world has only one ray of light: Jiang Lanyue. When that light disappears, the whole world will become a dark, sunless purgatory. Fortunately, in the end, he catches the sun that lives in his heart.