In this story, apparently, the apocalypse is something that happens every century where people lose their minds and become zombies. Yes, every century, funny one at that. To survive, you'll need to equip yourself with a good variety of weapons and uniforms that can change the look of your characters.
In Guns Girl - School DayZ, they have over 10 quest Maps that you can choose from where they have their own stages, battle modes, side story quests, events and boss