Clopfic: The Last Unicorns

Description YT

Link to Author: https://www.fimfiction.net/user/83757/Shakespearicles

It's all over. The world is doomed. An asteroid the size of the Crystal Empire is hurtling through space towards Equestria and there is no amount of magic that can stop it from obliterating all life on the planet. In the final moments, a mysterious spacecraft visits the planet and scoops up two of every creature. The two ponies that get picked to repopulate their species are Twilight Sparkle... and her brother.

Whoops.