Can Equestria handle the impact caused by Wild Pony, who is actually the somewhat scrambled and ponified martial arts prodigy and weirdness magnet otherwise known as Ranma Saotome?

Set after the failed wedding at the end of Ranma ½ and approximately three years before the return of Nightmare Moon, then rapidly skips ahead to just a few months prior.

Now has a side story: My Little Sphinx

On a side note, like MLP:FiM itself, the story will mainly be Slice of Life, with the occasional sections of Action/Adventure popping up now and then. I mention this because I couldn't choose both tags, and of the two, this story weighs in more on the Slice of Life side.

Letters. Everyone writes them, and they're not just for ponies. Be they carriers of serious news, friendly correspondence between pen pals, or declarations of heart and heartbreak, each one is written with a clear purpose or goal in mind.

Celestia uses them to try and keep her faithful student and friends in line, and try to keep an unbalanced world on the straight and narrow.

This is much harder than it sounds.

Now with an audio reading by Lady Tenkage!

Side Stories:

Old-Fashioned Bar Hoppers, featuring Celestia, Mayor Mare, and Granny Smith shenanigans.
Journal of an Adolescent Clone, featuring Sunny and Moony shenanigans since Season 5.

Vaati the Wind Mage has grown bored with the whole villain thing. He's trapped himself in a cycle doomed to repeat itself forever. Seeking a way to escape this miserable cycle of escape, kidnapping, and defeat, the legendary sorcerer inadvertantly teleports himself to another world entirely; a world populated by talking magical ponies who believe friendship is magic. Just how will the former villain survive this sugar bowl of a world? Will he end up learning a few lessons in friendship himself? One thing's for sure, retirement has never been this exciting.

AUTHOR NOTE: This story takes place in an episodic format. That is, it follows the style of the show in that every chapter is an 'episode', hence why they will all be lengthy. Some episodes will be canon ones with Vaati along for the ride, and others will be original where Vaati takes center-stage. The first episode takes place shortly after 'Griffon the Brush-Off'. Vaati is from Legend of Zelda and is property of Nintendo. You already know who owns FiM.