Sunny Starscout finds an ancient tome that describes the biologically unlikely conception of the Alicorn Princess Twilight Sparkle. Finally, the research breakthrough she's been searching for! Now ... if only they could replicate those conditions...

Who wrote the book? Hmm... Somepony named "Iron Will". It says here that he's the foremost expert on the long-lost Equestrian royal family, especially breeding habits. And look! The descriptions are so detailed! We'll be able to replicate it perfectly!

Contains: libelous ancient erotica, light incest, orgy, cum swapping, creampie eating, anatomically correct pierced pony clit, impregnation, birth, nursing.
Cover image by nire.