Celestia asks Twilight to come alone to Canterlot Castle one Spring day, and to tell nopony. Twilight, of course, did as asked by her closest, oldest foalhood friend and mentor. Upon arriving and with the two being alone in the throne room, Celestia asked Twilight for a special favor: for her to carry Celestia's first foal in over a thousand years.

Of course, this is a ridiculous request, right? It has to just be a prank. Celestia is just a mare, so how is it possible for her to give Twilight a foal? She's is just a mare, right?

Right?

~

Tags/Triggers:

Chapter 1 contains: Discussions of sex/breeding, general sexual content, anatomically accurate mare and hermaphrodite (including teats, flared penis, etc.), a REALLY horny hermaphrodite (mare with both all of a male's and female's genitalia), a rather large penis (in comparison to normal pony sizes; nothing ridiculous), size difference.

Chapter 2 contains: teat expansion via spell, a really horny mare in a magically-induced estrus, orgasm denial spell [kinda-sorta, but not meant as, mind control(?)]; loss of virginity (oral/throat), consensual cunnilingus and fellatio with reciprocation throughout (69), pheromones/scent/musk (mild osmophilia/olfactophilia, cuz horses), some dom & sub themes (no bondage or sadomasochism), muzzle/throat fucking, including very deep-throating and mild asphyxiation; wing fondling, oral/throat cumshot, magic stimulation throughout.

Chapter 3 contains: Cunnilingus, 'hot-dogging' (sliding penis between vulva lips), loss of virginity (anal), some dom & sub themes, including pinning down (no bondage or sadomasochism), very deep anal sex, lactation, teat milking, milk collection, anal creampie, and lotsa herm-cum.

Chapter 4 contains: Very dirty talk including impregnation/breeding fetishism; some dom & sub themes (no bondage or sadomasochism), painless loss of virginity (vaginal), aromophilia/osmophillia, slight belly bulge, planned herm x mare breedings consisting of feral, rough sex, including vaginal sex in multiple positions; tight fit, magically-performed teat fondling/milking, including lactation and milk collection, multiple deep vaginal cumshots, multiple female orgasms, passing out during sex, sex while mare is unconscious, excessive cum/light cum inflation, painless cervical/womb contact/penetration (cuz horses), abdominal cum bulge.

Chapter 5 contains: A planned fertilization, morning-after sex, vaginal sex (technically pregnant sex), vaginal creampie, and multiple orgasms.

Chapter 6 contains: Pregnancy, foal ultrasound, non-sexual massage, seperate general sexual content.

Chapter 7 contains: Vaginal sex while pregnant, vaginal creampies, mild femdom, deepthroat w/ minor gagging, multiple orgasms.

Chapter 8 contains: Slow, passionate, pregnancy vaginal sex.

Chapter 9 contains: Nothing explicit, but some sexual references.

Chapter 10 contains: Pregnancy, exhibitionist oral and vaginal sex, while pregnant, in front of wedding guests, including vaginal creampie and multiple orgasms, and voyeurism; mentions of herm on male anal sex; full-on orgy, including m/f, f/f, m/h, h/f, and f/f/f pairings, male x herm magic-job, male x herm blowjob, lots of vaginal sex, multiple mares in estrus, internal vaginal cumshots, external cumshot, multiple female orgasms, and three impregnations.

Epilogue contains: Mentions of impregnation and pregnancies, as well as the non-graphic birth of, and descriptions of, Twi's and Celestia's foal(s).

Yep, this one's a bit of a doozy.

~

EDIT: Was featured 8/19-8/21, and hit over 2k views in that time! *squee* Hope you all enjoyed!

Credits:

Thank you to ronny566 for commissioning this from me, and a special thanks for their patience while I worked on this story on and off for nearly two years.

Written and primarily edited by me, LegionofPony. Proofread and co-edited by my friend LGZ. Thanks!

Cover art is a trimmed and slightly modified version of #1737328 by 'hioshiru' on derpibooru (NSFW).