Once upon a time, in the magical land of Equestria, there were two regal sisters who ruled together and created harmony for all the land. To do this, the eldest used her alicorn powers to raise the sun at dawn; the younger brought out the moon to begin the night. Thus, the two sisters maintained balance for their kingdom and their subjects, all the different types of ponies.

But as time went on, the elder sister became obsessed with power. The ponies relished and played in her day, but the night, as beautiful as it was, seemed to mean nothing to the ponies. This fueled the elder's ego, and in turn, her obsession with power grew. One fateful night, the elder alicorn refused to lower the sun to make way for the dusk, believing that the ponies would love her more for extending the day. The younger sister tried to reason with her, but power had corrupted the elder's heart and had transformed her into a wicked mare of fire: Daybreaker.

She vowed that she would illuminate the land in eternal light. Reluctantly, the younger sister harnessed the most powerful magic known to ponydom: the Elements of Harmony. Using the magic of the Elements of Harmony, she defeated her elder sister, and banished her permanently in the moon. The younger sister took on responsibility for both sun and moon, and harmony has been maintained in Equestria for generations since.

Like the Lunaverse, This is a story that revolves around the "what if" of Celestia becoming corrupted and Luna taking over. Unlike the Lunaverse, this is something I've had since before learning about the Lunaverse. Any similarities are coincidental...mostly.

Alterverse does take some inspiration from the Lunaverse. But it is a different story, and different scenarios. But this will be more accurate to the show (when it comes to geography anyway).