Master, I've Joined Your Enemies! (Rebirth Revenge Cultivation)

Betrayed at the peak of immortality, Chu Yu's own master and sect drained her bloodline to empower a favored senior sister—then watched her die. But death isn't the end. Reborn as the disciple of her former master's greatest rival, Chu Yu gets a second chance at cultivation with a twist: she's now learning from the enemy camp. Armed with memories of her past life's bitter lessons and a rare constitution others once exploited, she'll forge a new path to power. No more blind loyalty. No more being the sacrificial pawn. This time, she's playing to win.