This story is a sequel to Cool Story Bro, But It Needs More... Ponies?

Gosh dang it, Angela!

I finally ask the girl I'm crushing on out on a date, and you decide to turn both me and her into ponies just for fun?!
What the hell has happened to my life?

Edit: Made Featured Box June 9th, 2014. (Woot! Woot!)

Princess Celestia tires of constantly being surrounded by decorum, deference, and formality, and decides to take a day off from being Princess. But visiting Ponyville incognito is harder than she expects. Will she be able to fit in and make friends without blowing her cover?

Tired of always having Twilight come to Canterlot every time she needs to retrieve the Elements of Harmony, Celestia decides to expedite the process by sending Twilight a magical amulet that will allow her to absorb all the Element's powers at once, turning her into a magical girl who fights monsters and wears skirts that are much too short. There's just one problem... Spike's the one who ends up making the contract, not Twilight. So, with Twilight taking the back seat, Spike is forced to take up the hero's mantle—and skirt—and fly to Canterlot to save the city from a massive tentacled beast and seal it back inside the magical card from which it escaped.

Once upon a time, in the magical land of Equestria...

One week ago, Twilight Sparkle was crowned the fourth Princess of Equestria. Tonight, Ponyville hosts the 1003rd Summer Sun Celebration, and Princess Celestia and Princess Luna want a vacation. With two fine young princesses like Cadance and Twilight to take over for them, nothing could possibly go wrong.

(Title image hacked together from vectors by sakatagintoki117 and Chrome-MMVII.)

A cartoon pony named Twilight Sparkle visits me every other Friday night. Normally she just raids my fridge, questions my life choices, and forces me to watch her show. Tonight something is different. Has she always had wings?

Fair warning: Twilight’s views on her own fandom's creations aren’t exactly positive.

Cover art generously provided by statoose
Reading by CaptainBron3y
Reading by NovekBrony
Reading by Natetrix
Chinese Translation by Comradash
This story is approved by Luna's Fanfiction Library

The story continues in the sequel

Octavia is a normal pony by most standards, save her talent on the cello. She goes through her life as simply as she can, living in Ponyville with her roommate Vinyl Scratch. Life is good, and nothing breaks that harmony. Nothing, that is, until the Templars got involved. Octavia has a music box that has been in her family for generations, but when a spectator tries to kill her after a show, it's obvious that it's not a normal box.

Having now faced death in the face, Octavia has but one choice: to join the Assassins and save the world.

Art cover by ME. Rated Teen for violence with ponies.

Celestia had a problem. Somepony wrote a novel about Nightmare Moon's rebellion. This made Luna quite unhappy, and unfortunately for her sister, Luna has not yet gotten the hang of modern traditions like freedom of speech, the abolition of the death penalty, and not bothering Princess Celestia when she's trying to sleep.

Fortunately, Celestia also had a faithful student, one who is now a Princess with an ill-defined portfolio and perfectly capable of dispensing justice by the laws of both today and one thousand years ago.

Now Twilight Sparkle has a problem.

(Title image hacked together from vectors by Martinnus1, Hawk9mm, and Paulie15.)

For the longest time, Epona has served as the loyal mount of Link, hero of Hyrule. But one day, she finds out that she's actually from a world inhabited by intelligent, colorful equines. And not only that: Her daughter is one of the six main heroes from that world. But that is only the beginning.

When the worlds of Equestria and Hyrule get into contact after a millennium, lots of hidden conspiracies are revealed. Evil fiends from a time long forgotten emerge and some ponies begin to understand their powers as sages. But the one important question will be: What will Epona choose? Her friends from Hyrule? Or her family from Equestria?

It's Sisterhooves Social time again. This year, Dash catches wind of two new competitors and gets Spike to bet on the race. When her team is revealed to be a rather famous set of siblings, it looks like poor Spike will be her slave for a week! However, due to a team of masseurs, a minor invasion, unfortunate addictions, and dubious barrel components, victory might not be as near as she thinks...

Luna is no longer Nightmare Moon, and has returned to rule Equestira once again, but not everypony is so ready to forgive. When a secret organization kidnaps the Elements of Harmony and threatens to murder Luna, Rainbow Dash must go back into the memories of her ancestor Firefly, to learn the ways of the Assassins to fight this new terror and save the new princess, as well as her friends.

Credit to he4rtofcourage for the title image.