An Unscrupulous Author on the Road to Preventing the Heroine from Becoming Black

This is a new story, don't spray it if you don't like it. This is the story of an unscrupulous female writer who travels back in time to a novel she wrote because of someone who claims to be a space restorer, and has a relationship with the heroine in the book. Her mission is to prevent the heroine from turning dark. I haven't made a decision yet about HE or BE.