Eh..so far I headcanon their backstory as them being friends at some point.
Friends, on adventures searching for the Elements during which they realize their true callings in life wich lead to the betrayals that lead to things as we know them. Sooo much story potential right there. And emotional stuff.
Also, filly Luna is best filly.
Why is this getting so many views? And why do people even want it in their groups? HOW did people outside my watchers find this?