My Family Stole My Military Merits, So the Reborn Legitimate Daughter Slaughtered Them All

[Reborn for revenge + legitimate daughter of a military family + the whole family gets their comeuppance, no forgiveness + true and fake heiresses] I spent ten years disguised as a man, taking my father’s place in the army and earning glorious military honors. After the war ended, afraid my disguise would be exposed, I had no choice but to fake my death. Then I returned to the capital as a woman to reunite with my family. But who could have guessed that, afraid I would bring them trouble, my family had already raised a new daughter? Father said, “You enlisted in the army disguised as a man. That’s a crime of deceiving the emperor. If it comes to light, it’ll get the whole family killed.” Mother said, “As the eldest daughter, you must endure what you can. That’s your lot in life.” My younger brother said, “Our new sister has spent all these years by our parents’ side, caring for them. You should be grateful to her.” After ten years on the battlefield, I was weathered and worn. All I wanted was the warmth of a family. The emperor bestowed on my family all the honors I had never been allowed to enjoy: Father was made a first-rank duke, Mother received the title of First-Rank Lady, my adopted sister was betrothed to the Crown Prince, and my younger brother was hailed as a god of war. But I wasn’t even allowed to show my face, or I’d be the criminal who got the whole family killed. Even though I never fought back or competed with her, my adopted sister went to a banquet one day and came home sobbing her heart out. “The Prince of Ning has returned from the borderlands. He said I don’t look anything like my brother. Mother, I’m scared. What if the Prince of Ning sees Elder Sister…?” Mother turned deathly pale on the spot. That day, Mother broke from her usual coldness and gently offered me a cup of wine to celebrate my birthday. I was so moved that I drank it all in one gulp. When I woke, my voice had been poisoned into silence, all ten of my fingers had been broken, and my martial arts cultivation had been destroyed. They had gone to such lengths to steal my military honors, all to pave the way for their adopted daughter. The glory I had won by risking my life had become a death sentence! When I opened my eyes again, I had been reborn on the very first day I returned to the capital after faking my death…