The Game Empress of the Post-Apocalypse

What? Two women serving one man? Why should men in the post-apocalyptic world get to throw their weight around? Who says there’s no friendship or love after the apocalypse? Huh? She transmigrated to the time before the apocalypse and made a deal with an angel from another plane? The real world, the apocalypse world, and the monster-game world have merged into three planes? How are humans supposed to survive in a world full of zombies and monsters? A supermarket with unlimited supplies, a bunch of little kindergarteners? An all-woman team, farming in a pocket dimension? Territories in an apocalyptic game, nation-versus-nation warfare? A main quest to save game NPCs?! Seriously, what happens in the end? Will she stay in the apocalypse or return to the real world? Could there even be a war between worlds? Fighting a godlike being from another plane? Oh my God!