The zebra priest stops his chanting, and moves his hand slowly from his black equine cock as if a unknown voice spoke to him. "You shall be a beast of burden. Go to the donkey campsite, they will gladly take you into their ranks."
"Y-yes, high priest." Ty bows before the zebra and goes to the direction the priest pointed him towards. The naked teenage human walks and walks till he reaches the location, now being surrounded by nothing but anthro donkeys and mules doing a variety of things. Two mules were loading up supplies on makeshift backpacks, preparing to go to other outposts that were set up by the hordes. A few female donkeys were carrying for the young ones of the bunch, one holding a fowl and another a jack with them gently suckling on their mothers breasts.
A skinny looking donkey walks up to Ty after noticing the human standing there all by himself, his 7 foot tall figure feeling imposing on the teenage boy. "A new one for our group. Hehe, what's your name, kid?"
"My name is Ty," He said, bowing before the donkey, causing a loud, obnoxious laugh from him.
"I ain't royalty, kid." The donkey finishes his laughing, patting the teenager on the head. "But don't sweat it. We'll get you turn into a sexy beast in no time, just follow my lead. Name's Jack by the way."
"Okay. Nice to meet you, Jack." Ty said, slightly blushing as the donkey walks off, following him to a nearby row of barrels. Jack takes a dirty mug and releases a valve on a barrel, watching it as thick, white cum flows from it to fill the mug up to the brim.
"Hope you got a empty stomach, kid." Jack nickers and hands Ty the almost overflowing mug. "You'll need to drink all of it, and once you do it'll take a bit for the effects to start happening."
"Thank you so much!" Ty replies and starts gulping down half the mug, taking a break for a brief moment to speak. "I can't wait to serve the horde for you!"
"That a boy!" Jack pats Ty on the shoulder and walks off to finish the rest of his duties, the 15 year old boy drinking the rest of the donkey cum before tossing the mug on the ground. Slowly Ty could feel some of the transformation start to happen, his whole body becoming sensitive with pleasure and slowly growing in height till he was 6 and a half feet tall.
"Ty is that you?" A female voice was heard a few meters away, causing the tall teen to turn around and see a teenage female donkey looking at him. He quickly recognize the voice of his high-school classmate, Jennifer.
"Hey Jen! You look sexy!" Ty greets her, his pubic hairs on his crotch turning into soft grey fur as it gradually grows more up his body. "It's very nice meeting someone familiar here. How did you end up with the donkeys?"
"I was on a morning jog when all the chaos happened." Replied Jen, stepping closer to Ty to feel his new fur that was almost covering his whole body except for his head. "I was so scared, but then Jack saved me before I was raped by a pack of hyenas. He was so caring, and I couldn't say no to joining the donkeys."
"I'm glad you're enjoying your new life." Ty smiles, his eyes being stuck gazing on her D cup breasts which causes his cock to throb rock hard. "Damn..you look so sexy.. Sorry if I'm so horny all the sudden. It's the cum I just drank."
"Oh I don't mind one bit!" Jen steps closer and takes his throbbing cock in her hand to gently stroke it. "I always wanted to fuck someone while they change. I find the thought so arousing."
"In that case, let's have a good fuck!" Ty pulls Jen in and deeply kisses her, the animalistic taste and smell from her face was driving his lust levels to skyrocket. She starts stroking his cock at a brisk pace, the changing teen moaning into Jen's mouth as his shaft grew inch by inch till it was 12 inches in length. Ty's cock starts molting to a black color, and the head flaring out like a equine dick. "NNngggghhhffffuuck I want to breed now!"
"Then breed me like a horny animal!" Jen quickly gets down on all fours, Ty following to sit on his knees as his feet shifted into hooves. He grabs the middle of his shaft, feeling it grow even more to a total of 15 inches before pushing the head of the donkey cock past Jen's wet folds. "AAHH YESSSSSYEEEEHHAAAWWW!!"
"Oh fuck! It feels so good!" Ty groans and thrusts like the animal he was becoming, his donkey cock throbbing from her wet inner walls tightening around it. The sex quicken his transformation process, causing his ears to grow longer and point outward and flick around from hearing sounds a lot better. The stench of both their musk increased as well, sending the two into a wilder state of mind. Their lustful noises attracts the attention of a few others in the camp, a few male and female donkeys watching on and masturbating at the sight of them. As fur begins to form on Ty's head, his face pushes out and he let's out a loud noise on the completion of his transformation. "YYEEEEEHAAWWW!! YEEEEHHAAWWWW!!!"
The new anthro donkey climaxes inside Jen, quickly flooding her pussy and womb with a wave after wave of thick cum. After he pulls out, his semen shoots out like a waterfall from the female's pussy lips, her slightly bulge belly slowly deflating back to normal. "Oh my fuck Jen...that was..that was amazing!"
"Yes YES it was!" Jen struggles to stand up on wobbly legs, eventually opting to lay down on her back and rub her cum leaking pussy. "I'm so glad you were the first to breed me, Ty! I can't wait to be a mother to your foals."
Ty smiles, stroking his cum and juice covered half erection as the males and females that were watching went off to go about their business. Jack comes back a few minutes later and pats Ty on the back. "Congrats on your first breeding, champ! Would you like to make that your primary job in our camp?"
"Hmm it sounds amazing, are there other jobs?" Ty asks, cupping his new heavy ballsack with his other hand to get a good feel of them as well.
"Oh yes indeed! I'll gladly explain the one you want to do and we can get you started on it." Jack replies with a wide grin, stroking his own shaft as well, having it fully erect at 20 inches.