In order for Princess Twilight Sparkle to become the new Ruler of Equestria, she must undergo an unorthodox test to prove her worth. However, that test happens to be a challenge of endurance against Princess Celestia - who's bound and gagged for her~
I'm a shameless neckbeard who has a knack for writing a LOT of smut. I have an Official Patreon page (Patreon.com/TheVClaw), and I also take commissions to help support myself as a freelance writer.