Sequel can be found here: Thestrals at Midnight

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After nearly having Twilight's past, and consequentially Equestria's future, altered a million different ways after Starlight Glimmer entered the unguarded Castle of Friendship and used the Friendship Map to change the past, Princess Luna decides to prevent that from ever happening again. To fix the security deficit at Twilight's Castle of Friendship, Princess Luna puts two of her most trusted, experienced thestral, more commonly known as bat-ponies, night guards under Twilight's total control to protect her and her castle. During what happens to be the intense Summer mating season.

Luna clearly has no idea what she's just set into motion...or does she? After all, she does know that Thestrals do have a very powerful sex drive...right?

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Story was featured on 1/1/17 - 1/4/17, and again on 1/6/16!

As of 1/22/16, this story has over 3k views! Thanks for the support!

Tags:

This story contains: building of a romantic (interspecies?) relationship between a pony mare with a stallion and a mare thestral (bat-ponies), general sexual content, male masturbation, female masturbation (including with exotic dildos), pheromones/scents, mares in heat, consensual fellatio, oral cumshots, including cum swallowing, defloration/first time vaginal sex (M/F), two instances of somnophilia (initially dub-con turned consensual), many female and male orgasms thrughout, consensual lesbian dildo-play, including 'normal' solo penetration, mutual ass-to-ass vaginal penetration, tribadism, and anal defloration, some kinkiness including erotic hair/tail pulling, some temporary disloyalty/cheating, voyeurism, implied foalcon but nothing described, two really horny mares in estrus seducing a stallion, including light femdom, very dirty talk including impregnation talk, a consensual threesome (M/F/F) including vaginal sex, deep penetrations/cervical touching, multiple deep internal cumshots throughout, excessive cum/light cum inflation, impregnation(s), pregnancy, and other stuff.

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Credits:

This was written and primarily edited by me, LegionofPony.

This was also edited by and contains some ideas of Koekelbag. Thank you very much for all your time, effort, and suggestions.

This was commissioned by Brony-wan-kenobi. Thank you for the commission!