How To Change The Ending

Two besties get reincarnated into a novel as twin sisters after arguing with a god. God asked them to change the world, and that's why he brought their souls into that world. That world has a crazy ending where the demons rampage and destroy it. The male lead saved the world, but he lost his female lead. It's tragic and crazy. They need to make sure the male lead and the female lead get their happy endings. [I bring the soul from another world with the hope that you guys will change this world's fate.] "Why do we have to go through that? I don't want to!"-HELINA "Why did you choose us? No matter how many times I think about it, it just doesn't make sense."-JULIA But they can't go back to their world, no matter what. They need to live in another world as another person. They need to live as Lilian and Lizzie. "Why the hell did the monster appear when I was trying to enjoy my food?"-LILIAN CARTEL ATARA "Holy sh-t! That's a monster!"-LIZZIE ROSE ATARA To love and to be loved.To save and to be saved. They're souls from another world and were brought there with the mission to prevent the world's fate from getting destroyed. Is it that easy for them to reach their happy ending? "The only person who sees me for who I am is you. How can I not love you then?"-MIKAEL ELKAIRO ALKAEZAR "What do I do? I think I helplessly fall in love with her."-EZEKIEL DE LINERO