Nie Li, once a powerful Demon Spiritist, dies in battle only to be reborn in his 13-year-old self. Despite starting as the weakest in his class, his past-life knowledge allows him to train rapidly, aiming to save his city from an impending beast assault. Driven by a desire to protect those he lost, Nie Li seeks vengeance against the traitorous Sacred Family and prepares for the battle that once ended in ruin, determined to rewrite his fate and safeguard his loved ones.
