Sweetie Belle had a pretty easy childhood, never considering just why her body was different to the other fillies. Rarity had always understood her sister's unusual body, but dreaded the day she would have to sit her sister down and explain what it meant. But the young filly had to grow up eventually, and it seems that special time of life has arrived. With Sweetie Belle clearly in great distress, surely it was Rarity's duty as an older sister to help her sibling through these strange and troublesome times?

Contains: Futa, Foalcon, Cum Inflation, Impregnation,