Queen Celestia has long since been the protector of her little ponies. Sol Invictus they call her during war time. Beloved Mother when peace is in abundance. Celestia has even heard some call her the Goddess of Life itself. She has never been called sister before.

AU where Luna does not exist.
Cover art credit goes to maocha on Deviant Art.

Luna has finally convinced Celestia to give her a chance to run the Equestrian Court for a whole night. Celestia now has nothing to do on Nightmare Night. Hmmmm.