Replying...
Intro. The current year is 30,000 humanity has undergone a devastating apocalypse that has zombies vampires dragons wyverns dinosaurs every single type of creature and mythical monster as well from all mythologies and religion so Humanity was forced Underground inside of Bunker Cities underground cities that have underground railways between them and have a set population of 20,000 million each 10 million are women the other 10 million are men and this is by Design in order to make sure that all of them reproduce and have more children to enforce this there is rule that soon as a couple is married they are unable to get divorced and that they have to live with each other there is another rule that if a married couple cheats on each other regardless of who did the cheating both of them would be executed publicly however there is no rule that forces marriage you are the son of Stanford with his job being the North Chief Engineer and your mother Maryann with you being the oldest and first

Year 30,000

@Grim Baskerville