This story is a sequel to Awakening

This is the long dark night of the soul. More than 10,000 years have passed since Celestia’s reign over Equestria ended and the entire continent sank into the ocean and faded into myth and legend. Although the pony tribes have colonized the stars, the earth ponies have lost their connection to the land, the unicorns no longer think magic even exists, and the pegasus tribe has forgotten how to fly.
Although the principles of magic and friendship and Harmony are under constant assault in this age of war and strife, a pegasus named Thunder Gale has travelled to the ends of the galaxy in search of a long, lost friend of his. His search has led him to a planet where the old ways have not been entirely forgotten and evils left dormant since Celestia’s time stir once again. In order to survive the night, he’ll have to seek out guidance in the last place he ever thought of looking: the wings on his back.
Not a crossover nor an alternate universe, this is the far future and all this has happened before, and will happen again.
Cover art by Silfoe.
Now featured on Equestria Daily!

A teleportation spell gone wrong teleports the Straw Hat crew to the land of Equestria and chaos ensues.

Get ready for laughs, awkward situations, and all out war that saves the nation of ponies!

Takes place post time skip in One Piece between Punk Hazard and Dressrosa, along with pre-coronation Twilight

MLP: FIM (C) Hasbro
One Piece (C) Eiichiro Oda

Pandinus Imperator (You can call him Pan, he won't mind) is knocked back in time during the Canterlot Invasion, and accidentally kills King Sombra on arrival. Instead of being executed, the changeling is surprised to find himself being hailed as a hero, and is promptly put on the throne as the new monarch, the Crystal Emperor. However, Pan now faces a great many problems, among them Celestia and Luna, who seem certain that the changeling is secretly up to no good, as well as several political factions secretly plotting to undermine his reign. There's also the tiny problem of the constant snowstorm that threatens to cut the city off from the outside world permanently.
The Crystal Ponies need a hero now more than ever before. Why did they get a changeling instead?

We Has A TvTropes.

While not truly a part of Bucking Nonsense's Changeling-Verse, the same rules regarding changeling abilities and society apply.

Cover image provided by gabapple, used with permission.

This story is a sequel to Twilight Sparkle And the Very Confusing Day

There were a few loose ends after Discord, who had turned into Eris, had gone into season and turned the entire world upside down in order to create enough chaos for favourable draconequus breeding conditions. Celestia had released the Flutterbeast upon Eris, restoring order and gender normality all over the globe.

Except not everypony and everybody changed back. Males who became mares and became pregnant, stayed mares, Eris' final parting gift of confusion and chaos in the world.

Both of the sexes are now so much more aware of each other's needs following the events of the Great Swap, and Eris' chaos had the unintentional side effect of creating a new level of harmony in the world, as suddenly everypony and everybody now had first hoof (or firsthand) experience in being the opposite sex.

Eris going into season also created the ideal conditions for the apocalypse.

Edit: Featured on Sunday, April 20th, 2014! Oh my gosh oh my gosh oh my gosh!

Diamond Tiara turns in a paper on pony magic.

In the future, we'll colonize the solar system, cure cancer, clone the human genome, and build trans-dimensional hoodies that can summon tiny talking horses from an alternate universe.

It's pretty snazzy.

Cover art by xioade.

There is no beginning and no ending; only hoodies and the poni poni poni that fill them.

Brief stories about Equestria as it might have been—or, you may suspect in darker hours, already is.

25. Necessary Evil: Lord Tirek will return to wreak havoc on Equestria... but not before he's needed.

24. Queen of Foals (Fausticorn):
I met a traveller from an antique land,
Who said—"Four vast and trunkless legs of stone
Stand in the desert. . . . Near them, on the sand,
Half sunk a shattered visage lies alone..."

23. The Mechanical Donkey (Cranky Doodle alt-universe): A colt working for the school paper uncovers an old donkey's secret.

22. The Element of Audacity (Twilight, Dash, Cthulhu): It would take a very brave, very stupid pony to defy the Eater.

21. The Gentle People (dark): The gryphon tribe that tried to follow a pony goddess.

20. It's a Trap! And Twilight knows it. But her opponent knows that she knows it. But she knows that Twilight knows that she knows that Twilight knows it...

19. Fraud!: Trixie is accused of cheating at cards.

18. Celerity: Rarity wonders what Celestia sees in her.

17. Worth It: Fluttershy teaches Twilight about the cost of love.

16. Self Image (Twilight, Rarity): Is beauty really only skin deep?

15. The Quiet One (Luna): Some ponies express emotions differently.

14. Special: Discord teaches Pound Cake an important lesson.

13. Twenty-one! (Pinkie Pie, Twilight; comedy, horror?): Twilight discovers the danger of asking Pinkie "why?"

12. Changeling Dream: You may think the cost of living on emotions is too high. But we know the cost.

11. Loyalty (Rainbow, Applejack): The job of an Element of Harmony is simple, and sometimes impossible.

10. [revoked]

9. Sombra's Curse (comedy): The terrible curse Sombra unleashed that made him king, and stole his soul!

8. Game of Immortals (Celestia, Discord; dark comedy): Celestia likes to win—no matter which side she plays.

7. The Pony Side (comedy): Darth Vader has more important things to share with Luke than who his father is.

6. No Regrets (sad): Looking back on her life, Twilight remembers how she treated Derpy, and faces some unpleasant truths about herself.

5. Shipping Costs (comedy): If you knew you were about to meet Celestia in the next life, you might ask yourself: Did you leave the world a better place? Did your friends know you loved them? Should you have written thirty-nine chapters of Celestia clop-fiction?

4. The Green Hills of Equestria (tragedy): Vincent's big-game hunting trip was a success ... almost.

3. Mare of the Rings (Fluttershy, Rainbow Dash; comedy, LotR): The greatest could not be trusted with the Ring. So Gandalf sought out the humblest. Maybe too humble....

2. Happy Thoughts (horror): Her sun, happy to be in its place in the sky, wrapped the land in its warm embrace, and flowers bloomed in her hoofprints. Celestia smiled. It was going to be another perfect day in Equestria. And all she had to do was think happy thoughts. Again.

1. The Pony: Once upon a midnight dreary, while I clicked weak and weary,
Thru many a vile and bilious image on slash-b of yore...

Original cover art by ModeratelyDeviant@DeviantArt

My name is Aedan and I'm your average run-of-the-mill guy from Missouri. I served in the Marine Corps for about four years, now I've been out for a year and I'm making a living on the edge of St. Louis. It's not the best of conditions for a guy like me to have to deal with, but I adapt and overcome. Then one Saturday morning on my daily jog I ran into something (well in truth she ran into me) I'd never thought possible. She calls herself 'Princess Luna'. She's alone and confused, but most of all, she wants to go home. And guess who the poor guy is that decided to help her.

rated Teen for talking like a Marine and some... 'Adult' situations...

This story is a sequel to The Princess and I

Ever since the day I decided to give up my old life for a new one I could say that everything's going good. I mean I've got a great girlfriend, an awesome new house and pretty much everything else a guy could ask for. However I'm sure that a lot of guys you look at me funny if I said my girlfriend was a princess and I live in a castle and I'm sure they'd say horrible things about me if they found out that princess was actually a pony who can control the moon.
My name is Aedan Ryan, six months ago I came to Equestria because I fell in love with a pony named Princess Luna. (Crazy right?) Now after having dealt with having to take care of her, a whole new challenge awaits me... one that I and every other man in the universe could never really be ready for...

Cover art done by quizzicalkisses, very good artist... I suggest you check them out.

Edits by OneWingedDevil and Chivalry

We all know how the story begins, and we all know how it ends. What we do not know is what happens in that infinite moment of time between when a pony dies, and when she is returned as something new. My name is Princess Twilight Sparkle, and this is the story of how I died.