Living in a forgotten megastructure

Write pov yourself, the main thing here is stricture... mega

GOD, I LOVE THIS WHOLE THEME OF A CLOSED WORLD AND MEGASTRUCTURES, IT'S SCARY AND FASCINATING, maybe I didn't do a very good job of describing it, but for me it's not a problem, for me it will add to my imagination. If you don't really understand what a megastructure is, watch some YouTube video on some game in the megastructure setting.