Twilight is ready to start a family of her own, and she can't think of anyone she'd rather have helping her with that than Celestia and Luna. A few choice potions is all it will take. But then the two sisters get a little carried away with things ... and, well, they end up overdoing it.

Contains: futa on female, futa on futa, potion-enhanced fertility, big balls, excessive cum, cum inflation, sloppy seconds, pony in lingerie/panties, threesome, impregnation, incest.
An entry into the Incest is Wincest Contest.
Cover image by SilFoe.