Nate McTonny and his sister Kate McTonny are identical twins, being born with no mane and tail are currently 9 years old. They want to try to do more for their relationship and decided to have sex for the first time. Read and find out.

NOTE: THIS IS A ONE CHAPTER STORY!

Also On-Hiatus until further notice.

Contains: Foalcon, Incest, Estrus, Cum Inflation, Vaginal, Oral, Deep Throat, Impregnation, Birthing, Hyper, Watersports, Urine Inflation, Cum In Bladder, Bladder Inflation, Urethral Penetration, Urine In Balls, Urine In Bladder, Urine Exchange, Ball Inflation, Omorashi, Full Bladders, Bursting Bladders, Urine In Womb, Drinking Urine, 69ing, Babycon, Masturbation, Breastfeeding

Cover art is made by me.