Celestia's Honorary Mares

On their first morning there, they awoke, dined on the finest vegan breakfast, (that would take some getting used to, Kristina and most of the others were getting major farts from it) and divided into lecture halls in the academic section of the castle, learning about equine anatomy and physiology, and detailed lessons all about equine massage, courting, and mating. It was... interesting...

The girls became squeamish when shown detailed charts and diagrams and models of equine reproductive organs, diagrams of human organs, clearly stolen from their own world at some point, then a series of lectures involving crude internal diagrams of pony-human coitus, which looked as if they had just recently been drawn by a couple of fifteen year-olds. These stomach-turning lectures explained how to, with the aid of some odd potions and unicorn magic, bypass the human cervix and allow for deeper penetration into the uterus to avoid serious damage and infection. What deranged mind went through the effort of inventing and developing all of this?

For people being sold into slavery, they sure were being educated up about it. Kristina had trouble keeping up with it all. She had to learn a crash course on the evolution and history of Equestria and its races, followed by memorizing different parts of the horse, learned to point out and name every part, with a bit of an empases on the posterior half, which parts were the most and least sensitive.

“Frog!”, Kristina blurted out, as the professor pointed to a diagram of the hoof. The other women in the room chuckled at the anatomical name.

“Very close, Ms. Vox, but that's a bit lower, that's to the rear of the hoof. This is the sensitive laminae, towards the front! And remember, if you rub along here real gently, he's going to notice it!”, said her patient, kindly teacher.

The lessons were very knowledge-intensive, and came from a mare who sounded particularly knowledgable and experienced in pony coitus. Kristina's classes were being taught by a pony named Twilight, an old light pink mare with a cutie mark of a cluster of seven purple stars, her mane was white with one purple highlight running through it.

It was a bit tiring, but also relaxing, and beautiful within the chambers of the castle. What kind of society educated its slaves? One that must have not known how slavery was supposed to work. Who was behind all this? At the end of the day, their heads swimming with weird new knowledge of everything horse reproduction, took a relaxing bath in the castle baths.

***

The next morning, they awoke with nervousness. This would be their first day of conditioning. They had been becoming well acquanted with playing with the mares, but today, they would have their first intimate experience with a stallion. They all gathered in the common room again to be introduced to the day's activities by Celestia and Luna. Cadance was there as well.

“Today, my stewardesses, you will start your condioning training to accommodate your new masters.
You will be the first subjects to cross the divide between our two races and accommodate yourselves to fully acccept the demanding qualities every stallion needs to be fully pleased. You will practice your first equine fellatio, and your first vaginal penetration.” Celestia said without a twitch.

In a lecure hall, They were all given a potion to drink that made it feel like ice was flowing through their kidneys, like something was moving around. What were they doing to their insides? They didn't feel any different after the iciness passed. They hoped they were okay. It felt a bit soothing, perhaps it would help them with the soreness they all knew they were about to feel from this day.

“This is your first subject, his name is Featherlight. He is level 0.1. His member is about the same size as a human male's. If you pass him, you can move on.”, Twilight announced to their gathering in a lecture room they had gone to.

Featherlight was a scrawny, scrawny pony, he looked ridiculous. Kristina couldn't believe their first experience with a stallion would be with this fellow. She approached him, and his member lowered. About six inches. Not bad. She got on her knees, and awkwardly approached him, knee-walking a bit as he stood looking at her with a curt, patient grin. He looked so bony, but she liked his cute brown eyes and creamy white coat. It's too bad her meeting him had to start out this way. Such an awkward introduction. She grabbed his dark chocolate-brown cock and, after staring at it for a second or two that felt like eternity with the class watching, began to suck off her first stallion. It tasted like... skin. It was warm and tender against her mouth, and twitched lightly with each movement of her tongue and lips. It grew erect, and she began to lose herself in it, taking it into her mouth and bobbing up and down with it, taking a good length of it in. She moved faster and faster, and began to taste a few drops of precum as they leaked out the end, but no cum yet...

“Very good. You passed the oral exam. You may proceed to the mounting exercise now.”, said Twilight watching closely from over in the corner.

'I don't even get to finish?! What a jip!' Kristina thought. 'Wait... Why am I thinking like this? This whole thing is horrible! I'm a slave being subjected to forced rape and sodomy with an animal for the entertainment of an audience, one of the most depraved acts of cruelty, rape and humiliation I can think of... but I'm complaining now that they won't let him cum now? What's happening to me?' she argued internally with herself as she got on all fours on a mat on the floor in the front of the lecture hall, the other women still watching in eager morbid fascination, and nervous anticipation that they would be next.

He mounted her, and thrusted a few times, and didn't even cum. It was like being mounted by a small goat. Kristina moaned a bit in embarrassment, but didn't come an orgasm either. He dismounted, it was over. Passed. She went to the next room, where level 1 awaited her. She felt teased.

“Welcome to Level 1. This Here, is Shears. His genitals are as narrow as a man's, but far, far longer. He will probe your cavity and see how far he can penetrate you. When called, proceed to front for oral exam, and mounting exam!”

Level 1 was a Chartreuse pony stallion named shears. He looked even more ridiculous. His lime green skin, a with wavy brown hair that was so overgrown you could hardly see his eyes through his bangs. His cutie mark was the shears used on sheep. She went up to him, and he nodded and smiled at her, his eyebrows raising. “You ready?”, he asked politely.

“I guess so.”, Kristina said.

His cock began to unsheath and descend, and it didn't stop. It was not much wider than Feather's but hung nearly to the floor.

“That's... long.” Kristina said out loud.

With a princess and a room of people watching her, Kristina sucked him off, only getting a couple of inches in before hitting the back of her throat, making her gag and spit it back out. She scored low and, would have to repeat the exam the next day.

She then, with some hesitance, got on all fours. With a buck, Shears' hooves landed on both sides of her back and a warm sclhong entered her, thrusting and squirming into her like a snake, pushing forward and forward until it hit a wall. It bumped a few times, feeling like a hard kick in the kidneys. Kristina began to protest, but the stallion said,

“It's okay, just relax, dear.”

Instantly the wall seemed to open up like a door, and Kristina felt a sudden weird lurch in what felt like her belly as his cock pushed its way into her deepest internal chambers. It felt very weird and uncomfortable, but not painful. This had to be an effect of the potions. Moans of astonishment came from the audience. Shears was fully into her, his flanks pressing up against her backside as he fully penetrated her with small thrusts. She felt his hose-like dick's full length curled up around deep inside her, moving around about with a weird feeling, touching her internally in places it felt like it shouldn't be. He finally pulled back out, which took awhile. Neither of them came. Kristina was started to get really annoyed with this bullshit. She Passed and moved on to the next level.

Through each level they waited in the lecture hall and watched the others go before them as they waited their own turn as their names were called out from a list. Kristina and the other girls began to gossip amongst themselves about the others' performances with these first test subjects, and one name was becoming notorious. When it was called out, the mare reading the list was confused.

“Sarah Williams...”
“Freja Fjorston...”
“Diamond Shores... Wait what?”, the examiner pony stammered.

The other girls looked at each other in confusion when it was first called out. A silky blonde with puffy red lips, black painted eyebrows and waxy looking skin swaggered forward,

“Is this your name? Goodness, it sounds like a pony name!” the examiner asked.

“It's my professional name.” she said haughtily.

“And what is... was your profession, if I may ask?” asked the Examiner.

“Porn.” she said, narrowing her eyes at the examiner.

“Ah. Well, Diamond Shores, We look forward to seeing what you can do! Show us all what a professional rut can do!”, the mare happily said.

'professional rut' was an odd title, but Diamond took it in stride. She sauntered past the examiner, throwing her hair up and saying “I'll do what it takes, Miss.”

Up through the day it became increasingly difficult for Kristina, and for just about everyone else. A light brown stallion two levels up started to really hurt. He was rough too, making Kristina squeal light moans of pain as he thrust into her, clearly enjoying his volunteer work more than some of the others.

Then it began to get really painful. A yellow stallion with a black member about the width of a baseball bat made her bleed. Wrapping her mouth around all these enourmous shafts was also making her lips chapped and cracked on the sides. Assistant mares kindly handed her oinment to use between tests. These ointments and potions lessened the pain, but she still had to go on.

The porn star Diamond Shores excelled at every level, taking in the stallions with apparent ease, suffering not a strain, stretching incredibly to fit them larger and larger, and even managing to make some of them finish for the first time on any of them that day, clearly wowing their assessors. Kristina and many other girls there didn't want to admit it, but they were already beginning to feel a bit jealous of her.

A girl with dyed lobster-red hair and hipster glasses leaned in from her desk to whisper to Kristina.
“Who does that Diamond Shores think she is? Just because she's so used to taking in huge dicks in her old profession she thinks she's gonna one-up on all of us here and become the star attraction? I'll show her how to please a stallion right! She's probably so loose the stallion feels like a pocket gopher in a subway terminal...”

The red-haired girl was called down next, and tried her best to put on a good show, but she gagged after trying to fit her mouth around level 4's thick head, and she spat it out, making it flop back and knock her glasses off as she coughed. She scored low and would have to re-take him tomorrow and the next day on until she could pass onto the next level.

The final level was slugs. His cutie mark was a slug with odd googly eyes and a frowny face. He was short, fat and orange, and his member was a chode, enourmously wide, like those concrete posts in front of stores meant to keep cars out of Best Buys, but almost as short as level 0.1. Kristina looked at it in fear.

“Please, I don't think I can...”

“This is the final test. You've passed every other up to now. You have to try, Kristina.”, said the examiner pony.

He mounted her, his fat belly and wide, stubby legs weighting down on her back as his front hooves pressed down on her, and slipped on her shoulderblades. He wasn't even able to stand up and hold on that well on her while she was on all fours, and she's couldn't hold up his weight, Kristina was pressed down into the ground, his hoove pressing her head down into the floor, as his cheeselog dong just smacked against her crotch, no where near able to fit in or get a slip around her vagina. It was not going in. She didn't pass, but neither did anyone else, except for one girl. Diamond Shores the porno actress.

From the looks of him Slugs apparently wasn't able to get his piece inside of any woman or mare most of the time, as he found himself slip into the porn star, he suddenly looked like he didn't know hat to do with himself. His form didn't so much as hump, but tremor furiously all over as he mounted her. The porn star made odd sounds of half-pain, half-pleasure that sounded like a yeti dying. Slugs' meatloaf made a loud schlorping sound when it pounded in and out Diamond Shores, his pudgy flanks slapping against her backside loudly as well. and when he finished and pulled out, it was like someone had gallon smashed a jug of buttermilk all over the floor. She didn't get up after he dismounted and pranced away glowing with pride. Her legs and arms slowly sprawled outward from under her as she sank down and laid out face-down, passed out in the puddle of splooge. Diamond Shores passed, but it had taken all of her out of it. She was going to be sore in the morning.