The Walls Between Us (Short story)

In the year 2149, humanity survives inside a colossal, AI-generated simulation called "The Archive", designed to preserve human consciousness after Earth's collapse. The Archive is structured like an infinite library, with each "book" representing a person's life. But when the Archive's walls begin to crack, monstrous entities called "Narrative Eaters" (resembling biomechanical Titans) emerge to devour stories-erasing people from existence.