Second Chance: Surviving the Apocalypse with a System!

After surviving in the apocalypse for 5 years, Ophelia finally met her end to a horde of zombies that was set ablazed in an all consuming inferno. Her only regret was dying along side the sister she promised to protect, yet she was the cause of her death. Only for her to open her eyes and find out the past 5 years of her life was all a test to bind to a system that she had no memory of making a deal with! On top of that, all the efforts she made to protect her little sister Eva was all futile. All because the world that her sister came from was a fantasy romance novel about the female lead conquering the apocalypse as well as collecting powerful men. while her dear sweet little sister was a cannon fodder! Doomed to be beaten by the female lead.... WHAT THE HELL IS UP WITH THAT!? ----------------------------------------- Ophelia with anger and determination to protect Eva, as well as making the female lead suffer for being the culprit in her and Eva's death. Went back into the world of the novel before it's main storyline started. Hording supplies, building connections and building a safe base for her and her sister was her first priority. But because she is binded to a system, its now her job to bring balance back into her world after the female lead's character collapsed! So What is this!? she only wanted to live peacefully in the apocalypse with her sister! Why is it her job to make a base that would be a safe place for all humans!? And why are the male leads following her sister? System explain! Second chance system: Eh heh(๑> v •̀๑)