Apocalypse: Zombie King is the Female Lead's Younger Sister

Zerra Sylvaris, a celestial nine-tailed fox and disciple of an ancient beast, transmigrates into an apocalyptic world as a mindless, decaying zombie. Driven by instinct for much of her existence, she eventually ascends to become the zombie king, regaining her memories. She struggles for survival against humans with superpowers intent on her destruction, yearning to return to her celestial realm. Her quest for escape is complicated by the discovery that this world is a novel. Zerra realizes she is merely cannon fodder, a temporary zombie king destined to be replaced. The novel's protagonist is her sister, and the male lead is her former fiancé, with Zerra serving as an obstacle to their romance. After numerous failed reincarnations, each ending in her death, Zerra finds herself in a peculiar new cycle. This time, the male lead intervenes when she attempts to end her life among zombies, his gaze unsettling her. Instead of rotting, Zerra awakens special powers, retaining her fair skin and gaining control over zombies. Crucially, her accumulated supplies from past lives are restored. However, she occasionally transforms into a fox, leading to the male lead, captivated by her appearance, repeatedly abducting her.