Okay, you got me. This is totally just Be More Chill but with ponies. And some other stuff thrown in. Not a bad way to introduce oneself to FiMfiction, I must say.

After watching the Season 9 trailer for FiM, I later realized that I could use it's story-line of Princess Celestia and Princess Luna retiring as a beginning for this story.

I did not write the original story of Be More Chill. That credit goes to Ned Vizzini and Joe Tracz, who wrote the original novel about a boy who swallows a supercomputer, as well as to the musical adaptation's songwriter, Joe Iconis. And, as always, "My Little Pony: Friendship Is Magic" was created by Lauren Faust, and is owned by Hasbro. All the credit for the original characters belongs to them.