Cheer up, Twilight. It's not every day somepony changes species. In fact, no pony has ever changed species. It's something new and you like discovering new things. Granted, Equestrians don't like new things, especially things that fundamentally alter their government. So maybe there is reason not to be happy after all.

This story is a sequel to Ascend

Congratulations, Twilight. With Celestia and Luna on their constitutionally mandated vacation, you're in charge of Equestria. The position of Regent is an honored and hallowed one. But maybe it's a bit early to congratulate you. After all, whether it's a nobility jealous of your ascension, or a military unhappy with Celestia's decisions; one thing's certain: your reign will be anything but peaceful.