The Male Protagonists Are All Reborn, but I Am the Vicious Female Counterpart

I always thought that I was the heroine of sweet pet novels. It wasn't until the moment I died that I realized that I was just the female supporting character in a sadomasochistic drama. The powerful uncle, the loyal bodyguard, the gentle and considerate fiancé, the coquettish and clingy younger brother... Are all reborn. They are reborn to make up for the mistakes of their previous lives and bring happiness to the heroine. And they doted on me and were extremely considerate, but it was just to coax me so that they could use my heart to extend the life of the heroine.