I thought I would start reading a fanfiction today, never have before.
I'm currently reading "Tough Love - Luna Vs. Celestia" by Aegis Shield, it's a dark adventure fic.
Description from the author:
After her complete defeat at the royal wedding, Celestia's ego is shattered. Luna promises to whip her sister back into shape, because it'll take far more than a few laps around the palace to put a grown alicorn at the top of her game. But, with Celestia coming home each day with a new set of bruises and a slightly more forward royal attitude, her subjects begin to fear her more than love her. Is Luna's ... special training turning her into a monster, or is it all according to some greater plan? It's time for some tough love!
(Warning: Dark tag for some Celestia abuse.)
It's only 120 pages long, or 51,816 words, so i'll be here for a while :)
The Fic: Fimfiction.net