The second John stepped out of his house he saw a great opportunity, Leslie, 19 years old and her sister Amy 18, were talking in front of their house. Amy was always friendly towards John, Leslie seems to dislike you a lot, it will be fun seeing her touching your balls, John thought.
JOHN – Hello girls!
Amy gave gently cupped his balls, and even gave you a little stroke, a sign of friendship. Leslie also cupped them with disinterest, but as John held her close to fondle her already expanding ass, she changed her attitude to a more friendly one. Both girls were black, and a bit above average in height. While Leslie was pretty gifted in all departments, Amy was pretty modest.
Slowly Leslie started stroking your dick, not as a sign of friendship but lust, Amy came back to do the same, and at the same time both started stripping.
LESLIE – We shouldn’t do this here, let’s go to the back of the house.
Sex in public is still a taboo due to this being a human neighborhood...for now.
Once we reached the back of their house, hidden from the public both girls were almost done with their size increase, and for your surprise, Amy was slightly curvier than her sister sporting K cups while Leslie stopped at a JJ size, and you could see it all in their glorious nakedness. It wouldn’t be long until they were mares, as the tails were already forming.
Felling daring, Amy asked John to mount her first, which he obliged to the best of abilities. Her pussy was very tight in the beginning but as it darkened he could go deeper and deeper, and Leslie had less and less to play with, as she was jerking off any part of John’s meat that wasn’t inside her sister, but she finally settles for his balls. That’s when you realized you were being watched by her mother and father, from the window. At this point they were already fucking and turning themselves but, of course, you wanted the sisters for your herd, and so reality had re-written itself to match it. They had decided to join someone else’s herd as all foal must do as they reach maturity, your sisters decided to stay with you a long time ago, but of course, there are no slaves. Any mare may choose to leave at any time, it’s just rare because there is a bond in a herd. As the knowledge came to John, both sisters were already getting their muzzles and their dark fur had already settled, Leslie was next in line and their father continues mounting their mother for all the time John fucked her. The sisters still lived with their parents, as herds are, rarely, enemies with each other. Since taking in his daughters you had become like a son to James (the sister’s father). He even allowed you to mount his wife at times. But that’s not important now, you have more people to convert.