No one can make you change but yourself.
Before Nightmare Moon, before Equestria, before the Alicorn sisters moved the Sun and the Moon in the sky, there was Luna.
Luna, and Celestia. Two ponies left alone by a twist of fate that came too soon.
In order to survive, the sisters leaned on each other. They became close, closer than any sisters could ever be.
Closer than any sisters should ever be.
For the April 2019 incest contest
Special thanks to ChudoJogurt for helping me make this story readable.
Cover by Akeahi