Two universes have collided, devastating the inhabitants of Earth, and Princess Celestia has a heartfelt conversation with the last human alive.
This is a short story I wrote almost two years ago, but then decided not to publish for various reasons. However, I recently decided I might as well go ahead and publish it. Note that although this story borrows a concept from the conversion bureau universe, it is NOT a conversion bureau story. No humans are changed into ponies, nor is there even any suggestion that changing humans into ponies was ever considered. Rather, it's primarily something I wrote to examine how an in character, canon Celestia would feel about, and deal with this situation.