Bodyguard!AU refers to a Fan Verse by My Little Pony: Friendship Is Magic fanfic writer Monochromatic. It's inspired by a series of art by the fan-artist Earthsong9405. The first story in the series is The Queen's Secret Crush.
The plot of the AU is simple: Rarity is royalty and Twilight Sparkle is her royal bodyguard. They also have mutual crushes on one another.
This fan-verse provides examples of:
- Adaptational Badass: Twilight is more hands-on in terms of her fighting abilities.
- Alternate Universe Fic: Rarity's family is royalty and Twilight Sparkle is Rarity's bodyguard.
- Bodyguard Crush: Twilight Sparkle has a crush on the queen she guards.
- Early Installment Weirdness: Rarity was originally a queen before becoming a princess in the second story.
- Unequal Pairing: Rarity is not only Twilight's employer but she's also her queen.