Co-Written by 'CPL, Colourfulpony' of the Manechat discord server

THIS WAS PLANNED AND PARTLY WRITTEN BEFORE CHAPTER 4 OF MAKE YOUR MARK!

A year after Unity was restored among ponykind, Sunny and her friends finally defeated Opaline Arcana.
Who is this she that Opaline refers to? And what's a human, and why do they want to go to the Crystal Empire?

15/03/2023: Violence tag added due to references of torture and blood.

03/04/2023: Sex tag added due to references of sex in the most recent chapter (Chapter 19).