Immersed Heart

Apocalyptic novel with multiple female protagonists. The main character is not the Virgin, so don't enter if you don't like it. (Transition from daily life in the early stage to more battles in the later stage) The peaceful days were broken by signs of the end of the world. "The threat of zombies is not fatal, and the fall of regions one by one is just the norm in the future... The real way to survive is that we must have a heart that is not infiltrated by nothingness." When necessary, rigid rules can fall, but people's hearts cannot.