The Villain in the Book, He Is Milky and Puffy

Yi Nian passed through the book and became cannon fodder in the book. Since she is cannon fodder, she will die early. Fortunately, what she wears is her first and only work. As the creator of this work, Yi Nian is still confident that she can live well. But why does this system say it must give readers a satisfying ending? Can't go back if you're not satisfied? But what can Yi Nian do? We can only work hard to get to the ending, and give readers a satisfying ending... But! Why don't the male protagonist and the villain boss act according to common sense? What should I do if the plot is all messed up?