Song Huaiyi didn't know until she was dying that the world she lived in was a book, and her half-sister was the heroine, her fiancé was the hero, and she was the catalyst between the male and female protagonists, making the love between the male and female protagonists more indestructible.
Damn it, since we are already a vicious female lead, let's just follow through to the end.
Purpose: Awakening self-awareness
