The Curious Case of a Yak Turned Bimbo

by TheOneWithoutAName

Rating: mature
Tags: Sex, Sandbar, Stygian, Yona, My Little Pony: Friendship is Magic, Fetish, Porn
Length: 10061

Stygian is a teacher at Twilight's school and he has the goal to turn Yona into his personal bimbo whore, not caring that she has a coltfriend.

Stygian is a teacher in Princess Twilight's Friendship School. But he is one with a smutty ambition. The ambition to make a certain yak girl his own! It doesn't matter that she has a boyfriend. The unicorn after all has a few tricks up his sleeve. A few tricks to get her more obedient. A bit of subtle manipulation here, a simple bimbofication spell there and he would conquer her. A nice little earnest yak slut of his own.

And teasing her coltfriend certainly would be rather fun as well~

This story contains not only F/M, but also some M/M scenes.

Despite the Anthro picture, the characters in this story are depicted as Feral.

Commissioned by: Anonymous

Editor: Koekelbag

Cover Art by: leinhart

Contains: Vaginal, Anal, Oral (Deepthroat), Fisting (with a hoof), Rimjob, Creampie, Cum Inflation, Maledom, Cervical Penetration, Impregnation, Lactation, Rough Sex, Biting, Foalcon, Interspecies, Cheating (Cuckolding), Bimbofication, F/M, M/M and a Smutty Ending!

Published 2021-05-13 20:00:02 UTC
Last updated 2021-05-13 20:00:02 UTC

A Teacher that Seduces his Student

Author's Note

A good reference image for Yona's slutty bimbo form is on furaffinity.net/view/ with the number 39722115

The Commissioner showed me this picture and it does look rather neat. :pinkiesmile:

In any case I hope you all enjoy the story! :yay:

A Teacher that Seduces his Student

“And that concludes class. Dismissed,” Stygian said, snapping his book shut with a grin.

A bell chimed a moment later as the students slowly got up and filed out of the room.

Stygian liked his new job in Twilight’s school. A knowledgeable stallion like him fit the role of a teacher perfectly after all. And it was a good change of pace to his work as an author.

Not to mention that it was rather...rewarding in other aspects as well.

Like a certain teenage yak that was happily bouncing over to him after she sent out her boyfriend to go ahead to the canteen to save them some seats.

Poor boy. Smiling like a fool as Stygian welcomed the yak girl with open hooves at his desk.

Yes. The side benefit of having young girls come up and fawn over him. It is something that came from his work as a writer. His target demographic were teenagers to young adults who practically ate his dark tragic story up like lovestruck little fillies.

Truth be told, he has nailed several mares in his class already. And this particular yak would be his newest conquest.

Maybe that is not entirely accurate though. He had more planned with her than simply having his fun and dumping her. She was a looker, so he planned to actually keep her. After making some improvements. A simple spell would be cast on her, to make her body adjust to his needs.

“My, have you grown again?” he asked suavely, hooves pulling her against him, while digging into her soft furry ass. His horn was already alight as he pulled her close enough so that she wouldn’t notice.

The naive yak squirmed a bit in his grip. “T-Teacher pony, you should not touch Yona there.”

“I am just hugging my favorite yak.”

She blushed at that, avoiding her eyes. “Y-Yes...and Yona likes hugs. But Sandbar wouldn’t.”

The yak retreated a bit, holding a respectable distance to him. Morals. A fun little thing to play with. But not before he had managed to do what he had planned.

While hugging her, his horn had continued to glow, hitting her with a spell on her head.

It would make her more perceptible to whatever he had to say, as well as increasing her libido massively over time and change her body in that of a proper bimbo slut.

He didn’t give her any indication though as he smiled at her, letting her ask him one of the many questions she had about the newest book eagerly, his molesting touch already forgotten.

1 Week later

The changes were working and she sought him out more now, often after class. Her hips got more plush as well as her teats. Minuscule differences for now and something that could be attributed to her still growing body.

Though Stygian always could tell.

She was slowly getting ready, and so he had told her to come to his room from now on. It would avoid any unwanted attention.

Like a good little student she did, closing the door to his office as she walked up to him with a spring in her step.

She tackle-jumped him in a hug which he had expected and accepted with open hooves.

“Eager today, aren’t we?” he joked, making the yak blush and avert her eyes.

“I-I do like to see teacher pony.”

“Do you now?” Stygian purred, hooves quickly going over to her plot and kneading it. The yak girl tensed a bit, albeit she didn’t pull away from him, shuddering as his hooves reached further back, only barely missing her no doubt wet pussy. “I don’t mind such intimate hugs.”

“...You shouldn’t do those.”

“Maybe.”

“So...about your draft for the newest book?” she asked, not even attempting to stop his grabby hooves even as they went over and pulled on her dock teasingly.

He did promise her a look at the draft to make it easier for her to come here on her first time. A simple little bait he laid out that was working.

His horn glowed, floating some papers over to her on the desk.

They separated as her eyes turned starry as she scanned over the papers. Of course Stygian, who was next to her, still reached down, hoof touching her teat as he pushed it down by her leg in a sideways hug.

“...I have a boyfriend.”

“I know,” he answered, not moving his hoof away again as the girl’s eyes were glued to the pages.

A bit of a lewd touch but still shying away from her major areas. A slow and steady corruption of his little student with his hooves more openly roaming her body.

He enjoyed the time with her and would continue to condition her like this. Next week would be even more fun.

Another week later

Sandbar wobbled out of the classroom today. It was clear as day to see that Yona was trying to take out her increasing libido on him. Something that made his weak hips groan out in distress no doubt.

Yona got a lot hornier now, her teats swelling, thighs filling up as did her ass now even more.

By now she pressed her ass into his hooves whenever he hugged and molested her, seeming to whine in disappointment and distressed internal conflict as he wasn’t touching her juicy pussy lips directly.

She knew she shouldn’t, but she wanted him to touch her more.

This indicated for him to go a step further. Another sketched out part of his book was dangled in front of her face for this. A surprise of sorts as she jumped on her cloven hooves with a wide smile.

“And I can read it too?!”

Stygian could feel the tremors from her motivated jumps as he smiled right back and set the pages in front of him.

“Of course. I am thinking of making you my proofreader. A good little girl like you would be perfect to review my work for any possible mistakes or mishaps, even while I’m confident in my abilities.”

The yak was by his side in a second.

He then tapped his leg.

“It would be easier if you sit here in my lap. That way we can both look it over together,” he suggested innocently.

Yona got stiff for a moment, her eyes naturally wandering to those big dark grey orbs and sheath. A lot bigger than Sandbar and bigger than the teenage colt could ever hope to get. She knew that too, no doubt.

He was well-endowed. Stygian knew this and had it confirmed plenty by many mares over his life, and the ones in his classroom as well.

After she was done staring she slowly got in front of his chair, tail lifted and making him glance at her cream-colored lips who were glistening with arousal. Then she jumped up in his lap. He could feel her wet cunt on his sheath, though with his self control made sure to not get erect as his hooves wrapped around her barrel.

“...Teacher pony okay?” she asked, a bit concerned.

“Of course, why wouldn’t I be?”

“...Sandbar is always getting a bit hurt when Yona sits in his lap.”

Stygian chuckled, already having thought that this might be the case.

“I am quite fine. I am not as weak and fragile as your boyfriend,” he voiced with a clear jab at the colt in question.

She wanted to protest it but found that she couldn’t. The grey unicorn was right after all. And any doubts about her decision to sit in his lap were quickly squashed as well as he was grinding up into her.

Yona bit her lip, her eyes looking down at the newest script and starting to read it, even as Stygian started to slowly hump into her, his hooves going over to her teats and large nipples, pinching them and making her gasp.

“T-Teacher pony?” the yak asked as he rolled over her full teats in his hooves.

“What is it Yona? Something wrong with the script?”

“N-No...just...you are touching...a bit...far...down…”

“You mean, like here?” Stygian asked in a questioning tone, his right hoof reaching past her teat and down to her pussy, the edge of his hoof sinking into the soft pliable flesh.

She moaned, her body rocked with pleasure even from such a miniscule contact. It was another part of the spell, amplifying any pleasure she got from him, while weakening any sensation from any cock that wasn’t his or larger insertions not done by him. Why only cocks and insertions, is something one might ask. The answer was rather simple. Stygian wanted to give Sandbar the possibility to satisfy her orally. To actively encourage that act instead of just using his small cock on her which would prove less effective now. A training for what was to come for him.

His hoof meanwhile breached her pussy more, sinking into her pink walls as she gasped.

“T-Teacher pony! T-This is only for Sandbar!” she protested, even as her yak snatch pressed against his hoof. He gave a thoughtful hum in response.

“Is it now? From what I have seen you are a bit...sexually pent up. Is Sandbar not doing it for you? Does his small cock not bring you enough release?”

She lowered her head in embarrassment and shame. “Y-Yona...Yona might feel not satisfied with Sandbar lately. No matter how much s-she smashes down into him.”

Stygian grinned, muzzle getting close to her ear as she could feel his hot breath on it.

“That is not good Yona. A young girl like you needs to take care of her needs and stay healthy. And a teacher like me should look after the well-being of his students. So let me do this for you.”

His voice was smooth, slithering down into her mind with the clear perverted suggestion, making it sound rather reasonable as she grinded into his hoof.

“O-Okay, as long as we don’t tell Sandbar. Yona doesn’t want him to feel bad…”

“I won’t. This will be a trusted secret and not leave the room,” he confirmed as he pushed in more than just the edge of his hoof. Her entire twat was wrapping around it now in a warm wet embrace.

Another gasp left her, followed by a pleasured cry as her eyes went back to the pages. Her hoof shakily flipped one as he slowly pistoned in and out of her.

She couldn’t see it, but Stygian was grinning as her hot sticky juices dripped down on his sheath and balls. Masturbating her by hoof was a success it seemed, meaning he was one step closer in turning her into his willing whore.

Of course it still needed work. For starters, to make sure she will not forget this sensation he is giving her. Especially when trying to replicate it with Sandbar.

His spell alone made sure the ecstasy she got from this was increased substantially. Doubling and tripling easily. Not that this was an excuse to slack off. Sloppy work wasn’t quite his style. To turn her faster, he would need to drive the point home as deep as he could.

With that in mind, his hoof was doing quick work in prodding deeper, inch after inch, while his free foreleg stayed at her taut teats to give them some attention as well.

Not enough.

His magic quickly grabbed her clit as soon as it emerged with a needy wink, stopping it from retreating and making the yak gasp at the sensation and then cry out as he pinched and twisted it teasingly.

A magic touch. Literally. And one that was driving her crazy as his muzzle went down to her neck, breathing in her scent, before giving it a lewd lick.

Yona tried to desperately read on but had a rather hard time at this moment, her body being assaulted by him as much as it was. More and more pleasure wracked up, hammering against her brain like his hoof did her insides. Pink flesh wrapping around it and trying to keep him in as he pulls back, only to rejoice every time it sunk into her again.

Hot pants and soft wet squishes could be heard from the two. Her sex was a real mess at this point, just like his lap as he kept it up, driving her closer and closer, never relenting on her, never letting the pleasure ebb away. At least until he felt her being close to being pushed over the edge.

He stopped for a moment, his movements becoming more careful as the high was avoided and Yona whined, her hips pushing against his hoof which retreated enough so that it was useless, while still being inside of her.

Then he started playing again, before slowing again and increasing it again. He was building it up. After a quarter of an hour, he could have pushed her by then to an orgasm ten times over. Patience was a virtue. And one he well utilized.

The poor yak had her head laying on the desk by then, mouth open, tongue hanging out and drooling as she moaned deliriously as he was slowly driving her mad. Just when she was about to break from this pleasant torture did he give her what she wanted.

His hoof shot up her pussy deep as he pulled her body up with his magic to have more room to do so. It was inside her. And it was thick and pleasant.

Stygian chuckled as she squealed out, the sound-dampening spell doing a good job of keeping it all inside the room as she started to cum heavily.

Her entire body twitched as a massive amount of her juices squirted out and over him like a fountain. She would need to drink something afterwards with how dehydrated this would make her.

He was pulling his hoof from her wet folds, leaving them puffy and aroused as Yona enjoyed the afterglow of her orgasm.

“Enjoying yourself?” Stygian asked teasingly as he floated the draft of his newest chapter aside as well as Yona on the desk, turning her around on her back. His hooves held her legs, slowly spreading it to reveal her heated, drenched and winking honey pot, making him lick his lips. “But I don’t think this will be enough for you. I can’t with good conscience let you leave without feeling satisfied.”

Yona opened her mouth, trying to protest it, but it was cut off by a loud squeal as he shoved his muzzle into her.

Ferociously lapping her insides, it was obvious she wouldn't leave any time soon. And slowly but surely...Yona was thinking she was okay with that.

An hour later she stumbled out of the office on weak legs, gait swaying as Stygian waved her goodbye.

“Come back any time if you need...help again,” he said with a purr, giving a last grope to her rear.

“W-Will do. T-Thank you teacher pony,” she managed to stutter out, pussy dripping as she walked away.

Stygian tutted even while he was amused by this, his magic cleaning up the floor while also casting another spell that would stop the dripping until she was in her room.

She was almost there now. Almost ready.

2 Weeks later

The next weeks were interesting to say the least. Only two days later did Yona come back, nervously and guiltily asking for more.

Sandbar tried to please her the same way Stygian did from what she was telling him, eating her out on a daily basis as she let him fuck her less and less and yet it was not enough.

Stygian let her in and had his fun with her, making sure to show her how a real stallion was doing it and leaving her rather happy as her morals rotted away.

Each time she came back, she was feeling a bit less guilty about it as he worked her body over, making it remember his touch.

Some pointed words from him to her impressionable mind helped as well. Telling her how her body needs this and how Sandbar was simply unable to provide it, no matter how much she loved him.

Words that stung but felt true to her.

But the real trick was what followed. He made her feel this pleasure whenever she asked him, never refusing her, only once to take a week off, citing some distribution trouble with his books.

Leaving the yak girl for one week without satisfaction.

By the time he was back, he barely had to wait an hour for her to barrel through the door, literally, making him huff as his magic put it back in place and repaired it as his eyes drifted to her.

She was almost unrecognizable to her former self. Very wide hips, plush soft big ass, with a set off very large teats that threatened to touch the ground and would if her nipples were erect, as they are now. Not to mention the obscene fat cocksucking lips that look as if she had undergone extreme beauty surgery. A mere parody of her former self as she looked like a complete bimbo now.

“Yona. You know that you need to knock,” he told her with a stern frown, making her squirm.

“Y-Yona knows, teacher pony. Yona...just wanted to see you. You were gone for a full week and...Yona needs your help again!” she exclaimed the last part, turning around and raising her short tail to show off her dripping nethers as her upper body bent down.

She looked like a real bitch in heat in this position as he gave a thoughtful hum.

“What about Sandbar? Couldn’t he eat you out as well in the time I was away?”

“N-No! Teacher pony is so much better than him! I need teacher pony to help me! Not Sandbar!” she protested rather loudly, making him chuckle.

“Is that so? Problem is that I am not feeling up for it today…”

The yak girl jumped up and turned around, horror-filled eyes facing him.

“B-But teacher pony always said yes!”

“And teacher pony can say no as well, believe it or not. Well. I am not in the mood for eating you out, but I could help you in a different way too…”

“Anything!”

“Come here then, Yona,” he said, pointing to the spot in front of him as he was sitting in his chair.

The yak almost tripped over herself as she ran around the table and in front of him, her tail wagging eagerly like a dog.

He smirked, hooves digging in her plot and lifting her up into his lap. She squeaked in surprise before it was silenced as his lips covered hers.

Even in all the past weeks this was something he never did. He never kissed her before. Kissing only was for Sandbar after all.

So she should have protested now. Hit him and berated him for crossing this line...instead she moaned as she melted into him, letting his tongue invade her mouth and do as it pleased.

Puddy in his hooves would be an accurate term. He had slowly but surely corrupted her, and now it was time to harvest the fruits of his labor.

His tongue entangled with her own, hooves digging into her inflated fat ass. The softness alone was enough to slowly get him hard, large shaft slipping out of his sheath and teasingly sliding against her lips, making her gasp as her lips parted from his.

The girl looked over her shoulder to the prick that was between her legs, the girth and length making her gawk in awe.

“S-So much bigger than Sandbar,” she muttered, making Stygian smirk.

This was the reaction he was aiming for. He always held back on getting hard with her, even as she started to stare at his crotch longingly. It would make him even more irresistible, not even managing to try and build up a resistance. A simple surprise attack to overwhelm her.

“It is,” he noted, making her flinch as she noticed he heard her. His hooves set her down slowly to the ground with ease.

Another stark reminder between how much stronger and better he was as he could easily manhandle her.

After she was sitting on the ground he took his dick and plopped it onto the confused yak’s face, who was hit by his musk. Her cheeks colored red as she looked up at him confused, having expected for him to take her pussy.

“I know that you are in a rush for me to help you with your needs, but this time I need your help first. You said that you would do anything, correct? Then how about you suck my big fat cock like a good girl to get your reward?”

“...Yona never sucked...cock before.”

“Then it is high time you start. Now get to it.”

The yak girl nodded, not giving any protest as her hooves gripped it with her muzzle nuzzling the length and sniffing it curiously.

Then she gave the first tentative lick, broad tongue dragging along his wide girth as he hummed in approval, while her hooves slowly started to stroke him.

Her inexperience was cute. A small reminder of how far she had come from the innocent girl that was soon to be defiled.

Another lick followed, along with another and then another. Yona’s laps were getting more and more eager, seemingly loving the taste of his rod.

Her breathing became pants, her cold snout pressing onto its surface as she did as she was told. Or at least tried to. Stygian found her service too slow, so his hoof grabbed her mane, pulling her up along his prick until her sexy full lips sat on the tip.

Yona moaned at the precum that invaded her mouth before squeaking in surprise as he was pushing her head on his shaft.

It was no easy feat. Her jaw opened wide to try and take his massive girth as it invaded her. Stygian grunted as he looked down at her. Those fat cocksucking bimbo lips wrapped around his prick were an enticing image. Her eyes were slightly rolled up into her head. She didn’t look like an inexperienced little girl, but a hooker that was working for her pay. He would have to use this spell more often.

“Suck,” he ordered, making her muffledly affirm it as her cheeks hollowed out, blowing his dick like a lollipop.

The stallion grunted, some precum hitting her tongue.

“Not too shabby. Let us go deeper now.”

His other hoof joined the first on her mane, increasing his grip on her as he pulled her closer to him. His erect rod pushed past the entrance of her gullet, easily working past the resistance. A massive bulge travelled down her neck as she was pushed down.

He could feel her throat squeezing him, contracting around him in an attempt to breathe. It was one of the best feelings in his mind, so he only stopped after his balls were touching her chin.

Yona gurgled, hooves pushing slightly against him, making him chuckle as he pulled back and then as his dick was in her mouth, let her mane go.

“Your turn now. This is what I want. Chin touching my balls. Do a good enough job at it and this cock you are now sucking will soon be pushed deep into your nethers. Way deeper than your pathetic coltfriend’s cock could ever reach.”

Harsh words, but by now Stygian knew he didn’t have to hold back anymore with niceties.

It proved true as Yona did slowly start to move her head, pushing it forward and spearing her own esophagus as if it was a mere onahole for her teacher to use.

She struggled a bit on the way down, though forced herself through it until her chin did indeed touch his balls again.

This movement was getting easier on each new plunge, her slow speed slowly picking up and after just a minute she was needily bobbing up and down on his shaft.

Her hooves meanwhile were down between her legs, clawing at her puffy fat pussy lips and digging in, in an attempt to please herself. The heady musk was doing a good job of supporting those endeavors.

The unicorn could see her eyes travelling up to him, a certain heart-shape to them that showed that she was very much in love with every bit of debauchery he was wrecking upon her poor impressionable body.

“That is a good look on you, Yona. Why don’t we share it?” Stygian asked, horn glowing over to her saddle bags and rummaging through them until he found her smartphone. He floated the pink-encased hunk of plastic up over him. Certainly a rather useful tool that Princess Twilight had developed from human technology.

He smirks as he hovers it over her, snapping a quick picture as the yak looked up on the camera, not stopping for even a second, only her ears twitching at the sound.

“How about showing your boyfriend what you are up to? Any protests? And I expect an answer,” he said pointedly, making Yona whine in distress as she pulled off. Strings of drool and precum connected it to her face.

“N-No...It is fine. Sandbar can’t satisfy Yona anyway.”

“Then write that to him,” her teacher told her with a smirk floating the device down to her, already having chosen the picture with only a text message missing now.

The yak girl’s only problem with this was, that she had to stop masturbating to do it, pulling her drenched hooves out to grip the device and shakily type in the message.

“Sorry Sandbar. Yona needs big dick to be satisfied...and your dick...is puny. Teacher pony is so much better than you at making Yona happy,” she voiced out what she was typing, before sending it.

After she was done, she let her phone immediately fall from her grip to get back to what she was doing prior, mouth instantly consuming that fat horsecock again, while her hooves dug into her needy cunt.

Stygian caught the device, setting it back on his desk after he checked the message, confirming that it was sent.

Sandbar was in the middle of a lecture, so chances were he wouldn’t read it for at least another 15 minutes. More than enough time to change over to fucking her twat after he creamed her mouth.

So for the next five minutes he let her do the work, obediently going to town on his shaft and trying to please him enough so that he would plug up her pussy with it.

Stygian by then groaned, feeling his climax inching ever closer as he slowly but surely felt like he reached the point of no return.

“That’s it Yona! I am cumming! Drink it all up you yak whore!” he exclaimed, the message while blurry to the girl’s aroused mind still managing to get through as she felt the hot piece of cock throb between her lips before it suddenly fired off.

It filled up her mouth in mere seconds, making it shoot out of her nose and the sides of her mouth, making her sputter in surprise at the volume before quickly plunging it into her gullet.

“Good girl. Let it rest deep as I am dumping my seed in your stomach,” he complimented, the encouragement enough for Yona to weather with the lack of air as she felt the hot spunk filling her belly. She felt it ballooning out a bit, showing a slight curve on her belly even with her fur.

She made sure to stay speared like this until he was well and truly done cumming, struggling a bit as she choked. Then, once he was done did she pull back quickly and flop it out of her mouth, coughing and panting.

“D-Did Yona do a good job? A-Are you helping Yona now?” she asked exhaustedly as much as desperately, her hooves continued to dig into her folds.

Stygian nods. “You did well. Now come here and I will give you, just what you deserve, Yona.”

She squeaked a bit as he used his hooves to lift her ass up, demonstrating again his physical prowess to her as she is heaved into his lap. Her large full teats pressing into him as her hot pussy lips were set on his spit-shined dick. The yak whimpers at the contact, her hooves pulling apart her thick lips for him, in the hopes that he would finally fuck her.

Luckily, her teacher didn’t tease her anymore, guiding her ass up until his mighty flare poked against her heated hole and then slowly sliding her down on him.

Yona gaped, mouth wide open, eyes wide as she could feel it. The merest contact was already so much better than Sandbar’s dick going in and out of her at full speed. She doubted she could go back to having sex with him in any capacity, considering these feelings alone.

There was a fullness to her. Her entire pussy spreading around his girth in a way that Sandbar’s small cock could never hope to achieve, let alone reach this deep.

It easily managed to hit her womb with only a bit more than half of his shaft inside her, the medial ring just shy of pushing in.

And then he suddenly dragged her ass up and down on his mighty pillar of flesh? She gushed almost instantly, squealing as her hooves went from holding open her pussy to around his neck, gripping him tightly without any worry about hurting him. Her mind had little euphoric fireworks going off inside her. A constant pop of mind-melting pleasure that was wracking her mind.

Stygian didn’t stop. He just got started as his prick hammered against the entrance of her womb. A good pace. And not at all a slow one like Sandbar would have done. He was here to satisfy his own needs as much as hers.

“S-So good, teacher pony! G-Go harder! Faster! G-Go smash with yak girl!” she pleaded barely a minute into this, wanting him to ravage her. A proper smashing, the likes of which her pussy has never received yet.

Of course, Stygian didn’t need any more encouragement than this. Her pleas were music to his ears. So he followed, her hips smacking down faster and harder, punching the entrance of her womb with each new plunge into her velvety depths.

Her sensitive insides were on fire with ecstasy as it continued to wrack her mind, threatening to throw her into another high.

And then there was a knock on the door.

“Earlier than expected,” Stygian noted with a grin, his magic gripping and opening the door inviting the lanky teenage colt in.

It was Sandbar.

The door quickly was shut behind him, making sure no noise of their activity was leaking out.

“...Yona?” he asked, staring dumbfounded at the scene before him. While the desk did hide it, the wet squelching and noisy moans of his girlfriend were a clear giveaway.

“S-Sandbar?” the yak answered surprised as Stygian used his magic to turn her body around. The girl clenching her teeth in a suppressed cry of pleasure as the shaft twisted around inside her, before carrying on to fuck her soaping little cunt.

“I…” Yona started, staring at him like a deer caught in the headlights, before her front legs wrapped behind herself and around her teacher’s neck again. “S-Sorry Sandbar. T-Teacher pony is just so much better than you at this! Yona is f-feeling really hot and only teacher pony can help her!”

As she said this, Stygian stood up on his two hindlegs and walked around the desk, now clearly showing how deep he went into her with every step. He got to the front of it, sitting on it, with his sweaty and girlcum drenched balls hanging off of it.

“That is how it is. Your girlfriend needs relief you cannot offer her, so I am helping her out. As a good boyfriend I am sure you don’t mind~” Stygian teased with a grin at the colt, who still stared at the pair, a bright blush covering his cheeks.

Then Stygian grunted as he smashed her ass down harder on his dick, finally spearing her womb and pushing against her innermost walls in a show of clear dominance.

Yona squealed in orgasmic bliss, pussy squirting out her juices wetly on the floor in front of her boyfriend. The teacher was pleased to see that his small pathetic dick was hard, precum seen on the tip from his arousal.

“Get closer if you want to have a better look,” Stygian offered to which Sandbar gulped and numbly nodded, shaky nervous hooves stepping forward and nearing the pair. Only once he was four foot away from them did he plop his ass down.

“You enjoy this, don’t you colt? Enjoy seeing your girlfriend get fucked by a real stallion and not such a sad excuse of one like you,” he sneered down at him, making the teenager whine as his dick twitched, his hoof reaching down and gripping it as he started to masturbate.

“Get closer. I want your face close enough that you can smell my balls. Or else I will throw your pathetic ass out.”

Sandbar shivered, hesitating. He knows he shouldn’t listen to his teacher. Especially after what he was doing with Yona in front of his eyes and yet...he felt tempted. He almost didn’t notice how he stood up and slowly walked up to them. It was the most arousing thing he had ever done.

“O-Okay,” he said a bit delatedly, sitting his ass down under the pair, his muzzle almost touching those musky balls as he felt drips of precum and his girlfriend’s juices dripping down on his muzzle.

Stygian smirked. He knew this one was a submissive colt. That was the reason why he made Yona send that picture earlier. Sandbar was easy to control. Not to mention that he was a little voyeur. He enjoyed others having sex almost more than himself. He already got more than enough punishments for spying on others over it. A perfect boyfriend for his perfect target. Both of them would be fun to toy around with.

“S-So biiiiiig!” the yak girl meanwhile screams out as he pounded her womb, stretching it as another inch of his dick sunk in. Sandbar knew he was grossly outmatched by it, his dick is almost covered completely by his hoof, showing just how short it was.

“You whore! Then cum! Cum on your boyfriend's face!”

The yak gritted her teeth, muffledly crying out as her eyes rolled up into her head from the overwhelming sensations and the stare of Sandbar. Her juices gushed down in larger quantities than normal, practically showering the gasping colt’s head who trembled as it ran down his back.

Stygian meanwhile pushed harder into her, stretching her womb so his cock could reach even deeper, trying to push in the last few inches that were still left out. Though that alone wouldn’t be satisfying enough. His eyes trailed down to the humiliated colt that was still jerking his small dick in front of them, an idea forming in his mind.

“Lick my balls, Sandbar.”

“W-What?”

“You heard me right. Lick and suck my balls clean off my sweat and your girlfriend’s cum as you help me to impregnate her.”

It sounded as diabolical as it did perverted. Ordering Sandbar to help him to impregnate his girlfriend. Of course it had the additional effect of making the colt’s aroused mind aware that Stygian wasn’t wearing a condom while using her pussy, unlike himself who never got to feel her soft velvety insides directly.

A whine left his lips at that, hoof getting faster. “O-Okay!” he moaned out, not managing to resist as his muzzle slowly closed in on his orbs before touching it directly. The musk was so strong as he sniffed it. This was the musk of a dominant stallion. Not of a weak little colt like himself. The earth pony’s tongue went out, starting to lick along his balls, tasting the salty juices that covered them. Another moan escaped him as he slobbered them up eagerly.

“That’s it dumb colt. I will impregnate Yona and you will help. This is your role in this. Helping me breed your girlfriend,” Stygian repeated, wanting to really hammer that point home as his hooves travelled over the yak's body, pushing her legs up before resting his own hooves up on her neck in a full nelson that made sure he could go even faster at her.

“B-Breed a-ahhh! Y-Yona?” the yak girl questioned, seemingly only now finding out about this and making her teacher chuckle.

“Yes Yona. I will breed you. I will own you. Mine to do as I please. You will carry my offspring and I will make you feel this amazing every single day. Never ending pleasure for a slutty yak whore like yourself. Doesn’t this sound divine to you~?”

This was a last test. A question to ensure she was his completely. That he was the most important pony to her without a single doubt. One that indeed owned her completely. So much so that she surrendered her body and entire being to him.

And it was a test she passed without much hesitation, a retarded smile spread on her whorishly moaning face.

“Y-YEEEEEEES! T-TEACHER PONY! I-IMPREGNATE YONA! B-BREED YAK GIRL! O-OWN HER! Y-YONA ONLY BELONGS TO TEACHER!” she screamed out, another climax rocking her entire being as her pussy clenched down on him.

At the same time, Sandbar managed to stretch his mouth wide open, enough to take one of his balls inside it, suckling and lapping with his tongue on it as his own hoof jerked his small dick faster as his girlfriend’s juices rained down on him yet again.

This proved to be too much for Stygian. There was no way to hold back with this slutty teenage couple working him over this earnestly. So he let loose, groaning as he bucked up into the girl, forcing the last inches into her and hilting completely as his seed blasted her womb.

Virile as he was, even his second load was quite large in volume. The yak’s womb was filled completely in mere seconds, her small egg being flooded by his sperm and breeding her without delay. Then her womb stretched out further, her belly bulging out along with it, causing her to look somewhat pregnant already, even with her thick fur.

And once nothing more fit in? It started to spray outside and down onto the whining colt who gave out a last cry as he came as well. His pathetic load splattered onto the floor as his head and mane were matted by his teacher’s superior spunk.

Stygian chuckled once he was done, pulling Yona off his prick and making the latter slap wetly onto Sandbar’s face as he set the dazed yak girl down on the table on her back.

The unicorn looked down at his student. A dominant gaze that made the small teenager shudder as his nostrils flared from the musk. The smeared cock pulsing hotly on him.

“Clean it slut. Your girlfriend’s asshole is next,” he stated commandingly, making it sound like a fact. Something that would come to pass without even an inkling of a doubt.

And Sandbar didn’t doubt it even one second either.

“O-Of course, sir,” he instantly stuttered out, face red with a blush as he started to push his tongue out and lick wetly along the rod that was still resting on his head.

The manly salty taste of his rod and cum mixed with his girlfriend’s juices was heavenly to him. A delicious treat that made his small cock stand at attention again instantly.

Many wet licks followed as he cleaned it diligently, setting his mouth onto the side of it as well before slurping some more. A hoof on his head though signified that it wasn’t enough as it pulled him up so his lips kissed the big flared tip. He could feel it pulsing in dominant approval of the bitch that was about to go down on it.

Sandbar whined needily but did follow along with the hoof as he was pushed, maw stretching wide and taking this fat prick into him. He felt it press down his tongue as it slid past it teasingly and hitting the back of his throat.

A gag escaped the colt, making Stygian chuckle.

“You best believe I will cram it in your throat exactly like I did it with your girlfriend,” he sneered down at him, making a pleasant fearful shiver run down his spine, right before the hoof started to move his head rapidly.

He pulled him back so his lips were wrapped around his cockhead, before plunging in and hitting the back of his throat, making the colt gag and squirm again as he repeated the process, clearly trying to hammer the entrance open for his tool.

Less than a minute later and he did, Sandbar’s eyes turning to shocked pinpricks as the outline of a thick horsecock travelled down his gullet, making him helplessly choke and claw at his teacher’s legs as he chuckled.

“That’s it cunt. Squeeze my dick and clean all the cum off of it.”

As he said that he pulled Sandbar’s head back, only to let his mane go. The message was simple. He wanted him to do it himself now after his lips managed to touch the base of his dick already.

It was the same thing Stygian did with Yona, guiding them only to a point and then demanding them to do it themselves to degrade themselves further. And considering how Sandbar continued after only a short moment, a rather effective one as well.

He even started to jerk his small dicklet again as his head bobbed up and down, struggling a bit to reach the base but forcing himself to do it regardless. The muffled moans and chokes were music to Stygian’s ears as he looked down at the pathetic colt with a grin.

Without much extra work he now owned him just as much as Yona. A nice little package deal with these two. And considering how easily Sandbar adjusted with his movements, speeding up only a short time later, it was a rather good deal too.

The suction felt rather pleasant to him as Sandbar made sure to clean off his shaft completely for what was to come. He let him work for a few minutes before gripping his mane again and then pulling the surprised colt off, lewd strings of spit and precum connecting his raging hard-on with his lips.

Sandbar panted, confused that he was pulled off so soon as he looked up at his teacher, whining a bit as he was still beating his small rod off.

“That is enough for now. I am ready to pop your girlfriend’s anal cherry,” he voiced making Sandbar lower his head demurely to show that he understood. A gesture that made the unicorn towering over him smirk.

“Be a good colt and I might let you drink my cum directly from the tap next time, instead of just cleaning it,” Stygian promised as the teenager nodded.

The teacher then turned around, tail hitting Sandbar’s face as his magic gripped Yona and pushed her to the middle of the desk and turned her around so she laid belly-first on the wooden surface.

“Teacher pony?” the yak girl murmured, from the sudden movement.

“Sorry for the wait Yona. I just had to give your boyfriend’s muzzle a test ride. But now I am ready to plow you again. How does anal sound? From what I know you haven’t done that with Sandbar yet and I am more than ready to pop that cherry and claim it for myself,” he said, hooves digging into her ass and making the yak moan as she looked back.

“Y-Yes. Yona not experienced there...thought it might feel strange, so she forbid Sandbar from doing it there, but if it is teacher pony, Yona doesn’t mind. Yak have to repay favors and teacher pony does help Yona always without hesitation.”

Her tail lifted, showing off her fat swollen ponut to him. A delectable sight, just asking for his cock to be shoved into it. So he had little hesitation poking it with his tip, setting it on it, ready to push in.

Yona would be in for a surprise if she thought it would just feel weird. With his magic having adjusted her body to be his perfect cocksleeve it was a guarantee that she would cum just as much as with her pussy.

Pressure was applied as he felt her tight little asshole starting to stretch as it was slowly giving way before the tip slid in, making the yak girl beneath him groan out.

It wasn’t the easiest of fits, considering she was a virgin in that hole, though it wasn’t something that Stygian worried about. Her adjusted body was flexible enough to accommodate him without any danger of damage to the bimbofied yak.

And while sinking it all in was taking some time, he enjoyed the sensation of her pucker swallowing his shaft whole slowly.

To increase the speed of this, Stygian started to slowly thrust, his hips pushing in more and more, his medial ring by now slipping inside.

Just as he was bottoming out inside of her, he could feel a small tongue, lifting up one of his balls making him grunt.

The teacher looked back with a grin at his other naughty student.

“Still horny, aren’t you? Is the sight of me fucking your girlfriend’s ass that tantalizing to you?” he asked mockingly as the colt hummed in agreement.

“While I do like your slurping, there is another place that requires your attention,” the teacher continued, making Sandbar look up in confusion.

Magic gripped his mane, pulling him up as he whined until his muzzle was set between his asscheeks.

“Lick my ass, boyslut.”

The colt swiftly adjusted to his new situation, tongue starting to reach out and drag across his teacher’s pucker without much hesitation. His hoof stroking his small shaft as he tried to get off even from this degrading task.

“Good little colt,” he encouraged him as he was reaming Yona, focusing his full attention on her again, the magic leaving Sandbar’s head as the small Earth Pony held himself there, pressing purposefully into his teacher’s ass. Two of his hooves started to cling to Stygian’s legs, the colt abandoning his masturbation and instead getting a good grip on his teacher’s ass. It was so that Sandbar could service him even as Stygian’s thrusts got smoother and faster.

The yak girl started to moan and pant as his full length was scraping her anal walls, indeed deriving pleasure from this which only made her love him and his cock even more.

“S-So gooood, t-teacher pony, a-aah!” she cried out with her ass clenching down on him, practically sucking him in as his large orbs slapped wetly against her plot.

His hooves gripped her large teats, that he as well might call udders, kneading and fondling them as he was enjoying her ass. All of this belonged to him now. A teenage girl and her boyfriend that was eagerly licking his ass.

The latter got even more enthused with his laps, tongue dragging and making his pucker shine in spit as he heard Yona’s own enjoyment.

“You are a dumb whore, Yona,” Stygian voiced, leaning over her so his face was close to her own as she stared up at him needily with heart-shaped eyes even despite the insult. “Just a bimbo in need of a good dicking. A pathetic student. The only thing you will be studying from now on is how to suck dick. With such a small brain like yours, it is the only thing you are capable of doing anyway,” he continued, berating her in a derogatory fashion as the girl trembled beneath him.

“S-Sorry, teacher pony! Y-Yona w-will do her b-best studying o-on how to suck pony dick!”

This reply made him grin. Maybe he should have her work in a glory hole in the school for his own amusement? With how weak-willed her mind now was she would listen to any suggestion. He could turn her into little more than the school cum dumpster and then make Sandbar clean it all up with his tongue.

Tempting ideas that he no doubt would revisit at some point once he had enough fun with her on his own.

“Good bitch. How about I reward you for such stellar obedience?” he said, head getting closer to her sensitive ear.

His teeth sunk into it a moment later, roughly pricking at it and making her squeal out as her body writhed beneath him.

She could feel his tongue dragging across it as well, making her tremble even more as he increased the pace again. Her asshole was stretched widely around his shaft as her bowels were jackhammered, her breath hitching as he hit a particularly sweet spot. By then she wasn’t even sure if that sweet spot was in her ass or on her ear, as the pleasure seemed to melt together.

Her legs in any case wrapped around him, trying to pull him in more as his teeth now pulled on her ear, making it strain from the abuse.

His precum was smeared inside of her as he spurted more of it out, leading to much smoother thrusting motions on his end. Something he deliberately abused as he worked himself closer to his own high as well.

Sandbar then slipped his tongue into his ass, making Stygian groan as it wiggled around inside him, cleaning him eagerly.

It helped to push him that much more closer, and with how tight Yona was getting it was clear that she was quite close as well.

“I am cumming Yona! Take my cum up your ass like a proper slut!” he growled around her ear, biting and pulling on it more.

A scream escaped her lips as she couldn’t hold on, her pussy squirting out some of her own juices and cum, making it splatter against her teacher as well as run down and over his still pistoning cock.

There was no holding back as Stygian was riding her ass hard, trying to get as much enjoyment out of it as possible before he then finally blew his load.

Deluges of his spunk splattered on her bowels, painting them white and tainting them forever. There was no innocence left in the yak girl whose back arched as she screamed out her clear enjoyment as her brain was fried from the ecstasy of her teacher’s dick.

Stygian stayed put, making sure to dump every little drop deep into her ass as he grunted and groaned. This was it. The big finale as all of her holes had gotten a taste of his sperm now.

It was well worth the wait in his mind as his cum tapered out, leaving his student filled to the brim. A belly bulging from the many loads she had taken.

He sighed out blissfully as his magic pulled Sandbar down from his pucker by his mane, even as he made some minor noises of protest. Stygian’s asshole was covered in the colt's spit, as he chuckled.

“Behave and I will let you do this many more times in the future,” he promised, before making him sit down between his legs as he pulled out.

There was a reason for it of course. As he pulled out his messy shaft, he gave Sandbar a first row seat in this position, wanting him to soak in the cock that had just popped his girlfriend’s anal cherry. And Sandbar’s eyes were rather transfixed on it as planned, staring in awe and arousal at his teacher’s mighty tool.

His hoof was still beating off his small cock while he panted, seemingly almost reaching a climax of his own.

Stygian grinned as only the flared tip was in now with the yak’s asshole clinging to it as he pulled. A rather debaucherous display.

And then it plopped out and smacked right on Sandbar’s muzzle startling him. The musk was strong as his nostrils flared. He squeaked out cutely, hoof pace increasing as he cried out and came.

Small ropes of his jizz landed on the floor, staining it lightly as Stygian dragged his cock back and forth over his student’s face.

Sandbar soaked it in for as long as he could, as it stained his muzzle and face before it flopped off of him as he enjoyed his afterglow.

The unicorn looked at him with a smile. A foolish colt thinking he was done, though there was still something left. Something that he would have to do.

Stygian’s horn lit up, his magic gripping Sandbar’s head and shoving it right up against the spunk-leaking cunt of his girlfriend.

“I want to see your muzzle in there as deep as it can go. Clean up as much as you can, slut,” he ordered to Sandbar sternly, who’s dick twitched in excitement under his teacher’s gaze.

The Earth Pony’s muzzle was pressed against the cunt as he licked the first few scoops of cum up, taking in everything that was threatening to slip out. The strong manly taste danced over his tongue before he gulped it down.

Then he pressed deeper, muzzle entering the yak who moaned out at the light pleasure she was receiving from it as her boyfriend dutifully lapped up the seed of another stallion.

Stygian smirked, floating his chair over to him and sitting down as he enjoyed the view of his two newest whores.

“Once you are done with this, I expect you to eat out her ass as well. I don’t need her dripping my sperm when she leaves here and cause any suspicions to arrive. After all, no one would believe it is yours, considering the pathetic volume you are storing in those small balls. Is that clear?”

Sandbar pulled his muzzle out of her. It is messy, while his sinuses were full of smelly cum, ensuring he would smell his teacher for days on end even after he was done.

“I-I understand, sir. I will make sure she is clean so that you are not troubled.”

After the words were spoken, the colt dived right back into her pussy, slurping up more of his teacher’s payload and gulping it down dutifully. Stygian could see the bulge lewdly travel down his neck each time he did so making him smirk.

This year was going to be a lot of fun.

8 Months later

Eight months have passed since Stygian impregnated his student Yona. Eight rather pleasurable months in which he rutted the girl almost daily, pushing her even more into debauchery as life within her started to grow.

Her belly was heavily pregnant with the female calf inside of her and just about ready to drop. Of course it was something that caused rumors to spread as soon as it was notable to the students, though Stygian easily nicked those in the butt. At least the wrong ones that could indicate him.

He went ahead with his plan, using one of the lower floors with a lesser travelled bathroom to establish a glory hole and letting Yona start to suck dicks here and, once rumors about it spread enough, even take a few inside her pussy.

With his instructions in mind, Yona made sure to not be too secretive about it either, causing a few to see her when she left which then led to the Bimbo being approached by several students. She pretty much acted as a prostitute to them, further cementing her reputation as a bimbo that will suck any cock for money and even take dicks raw when the payment worked out.

And obviously this was where she got pregnant from. Just some random colt, griffon or any other race under the sun. Just a horny bimbo with more lust than brain.

It was fun to toy with the student’s perceptions of the once so upstanding yak girl and twisting it into this parody of herself. He didn’t have to worry about her not coming back to him either as his spell did after all ensure that his cock felt best. Not to mention that she would have signs of withdrawal if she didn’t get it regularly.

Magic was a nifty little thing, wasn’t it? It made Stygian glad to be born a unicorn and able to freely manipulate her like this as well as many other girls.

While Yona’s friends were shocked by her changes and Sandbar seemingly being okay for his girlfriend to be the town bicycle, they learned to accept it as the couple just being rather kinky. Yona was still the same after all under the layer of perversion.

Only that she also sucked off Gallus now too as he had paid her, though Yona giggled as she told him that he was only about as large as Sandbar and would be better off servicing his cock.

Today again he had her laid on her back on his desk, her teats swollen even more than usual with milk squirting out of them as he gave them a squeeze. Her pussy winked around the large vibrator that was sculpted after his own cock. It whirred inside her wildly, making her scream and her legs twitch as large drops of her own juices were falling from the ground like a faucet.

Stygian himself was sitting on his seat, only that Sandbar’s face was on it, eagerly slurping up his teacher’s ass.

“Perfect. I bet this will make you even more popular now Yona. Though of course I will be the one to have the first taste of it,” her teacher noted, mouth going down and setting itself on her left teat. He sucked on it, making her sweet mother’s milk spill out on his tongue.

A satisfied hum left him, as his teeth pricked at her sensitive nipple, biting it and making the yak cry out even louder as more milk splashed out.

Yes, this was indeed perfect. A yak bimbo on his desk and a boyslut on his chair. Both ready to service him. Sometimes he even made both of them service his cock together.

Still, even in this perfection he knew that it could be even better.

His mind already flashed through the different other targets he had yet to corrupt. Mainly Yona’s friends.

Be it the proud dragoness Smolder with a fable for cute things that had a tongue long enough to wrap his entire dick up like a cocoon, Ocellus, the cute shy girl that could transform into anything his perverted mind came up from, Silver Stream, the hippogriff with the ability to transform into a sea pony that would make for a rather unique fucking experience with her aquatic pussy, or even Gallus, the cocky and yet sometimes insecure griffon whose insecurity could surely cause him to be turned into a cock lover. They all were valuable targets. And with Yona and Sandbar on his side it would be easy enough to break into their group and slowly turn them one by one into a harem of sluts for him to use. At his mercy and yet begging for more.

It made his large shaft throb in anticipation. He would impregnate and use them all. 6 bright stars that once saved the school, turned into little more than sluts, whores and toys for his own amusement.

He could hardly wait.