The System Set Me Up with Five Kids

In the apocalypse, I died alongside the Level Eight Zombie King. I thought dying was for the best: no one had loved me before the apocalypse, and afterward the world was crawling with zombies and I couldn't even get a hot meal. But not only did I survive, my System dragged me into a book! Fine, I can live with that, but why make a twenty-three-year-old young woman like me the mother of five little brats? I'm done! You lousy System, you're completely useless! Besides screwing me over, what good are you?