Sweetie Belle was just a few hoof steps away from her destination. As the full weight of what she was about to get into settled in her mind, her body began to heat up immensely, her legs began to shake and her heart raced at a mile a minute. Just about two more steps now and Sweetie had to stop to try and calm herself down.

‘You can do this, Sweetie Belle, you can do this. If you’re successful, it will be so… worth it? At least I think it will be,’ she thought to herself. A few more silenced deep breaths and few more argumentative thoughts in her brain later, the anxious unicorn filly, carefully took a step forward and peeked around the corner, past the door frame and into her elder sister’s sewing room.

She found it to be rather messy today, with a vast plethora of red, purple, blue, pink, white, orange fabrics, spools of thread and various pieces of sewing equipment strewn across the floor and all over her work desks. Amongst all that however, right in middle of the room was the adult mare in question, facing roughly 180 degrees from the room’s entrance and huddled over her sewing machine sporadically switching between sewing seams and making adjustments.

There was one particular reason why the direction she was facing was critical however, especially in this context. It provided Sweetie Belle with a view she would only then choose over any other. Though Rarity’s curly velvet tail was almost completely in the way, it would often swish back and forth as Rarity reached around her work table for whatever she needed and her young sister was rewarded for her patience with the view of her mature labia that, to Sweetie, seemed to shine brighter than the sunlight coming in through the boutique’s tall, luxurious windows.

In reaction, Sweetie’s body began to change itself into a state of absolute arousal. The faucets down in her lower folds began leaking their sweet love-inducing secretions and her pupils grew to twice the size. Her already frantic heart rate somehow increased a tad more and her breathing grew into more erratic and unstable patterns. Finally, to top it all off, her cheeks were a blazing cherry red, as though attempting to signal to any of the nonexistent onlookers that this little filly was ready for a good rut.

A few moments later, Sweetie forced herself to look away from her sister so that she could calm herself into a solid state of mind, which she knew would be required of her if she truly wished to get her muzzle on that oddly beautiful sight. Now that she was able to think a tad more clearly, she realized just how seriously confusing things were at that moment. As they were sisters, she had been exposed to her sister’s genitalia loads of times, albeit the sexual implications weren’t there of course, and she had never felt even close to what she felt now. After finally disposing a plethora of most likely false deductions into her mind’s trash bin, she decided that it simply had to do with whatever influence her body was under, a realization to which, caused Sweetie to face-hoof at how obvious it was. Sweetie Belle made a silent sigh.

‘Oh Celestia, should I really be doing this? Something tells me it’s going to end in disaster…’ she thought. For the nth time in those past few minutes she had been spying on her sister, she went through all the possibilities and scenarios in her head. Finally, she thought she had made a decision.

‘Ok, so I can give it a try, and if it really goes badly, I could maybe just blame it on my problem. There, that has to work. Now I just have to go up and to her and…’
At that, the unicorn took one final deep breath, dropped her view to a place only their hooves would be as a precaution, entered the room, and began to quietly tiptoe her way toward her sister’s behind.

Ten feet, eight feet, five feet, three feet, one foot and the filly stopped. She was so close to her reward and was apparently still unnoticed by Rarity, which meant that she was focusing rather hard. As Rarity’s tail swished back and forth, it brushed against her face, horn and mane which caused Sweetie to force herself to stifle a giggle as a sudden ticklishness took over her horny thoughts, though only for a moment. Discretely, Sweetie Belle lifted her left hoof and prevented the tail from swinging beyond her barrier. Finally, Sweetie lifted her head from the floor and up into the heavens that were her sister’s genitals.

The feelings she had previously felt at the doorway immediately returned though this time Sweetie was able to get a mild whiff of her sister’s scent which caused her saliva glands to kick into overdrive. If she hadn’t been keeping her mouth in control, she would have found herself drooling at the magnificent sight before her. With one final gulp, Sweetie Belle made her move.

“Now if only I could just… OH!” muttered the busy unicorn before being startled by a sudden intrusion of her private area. In fact it startled her so much, that she lost focus on the fancy blue dress she had been working on and the seam she had been sewing went way off its course, potentially ruining her work. Luckily for Sweetie Belle, as Rarity was an elegant mare, she was able to refrain from instinctively bucking her right in the face. If it had been Applejack, for instance, whose territory she’d invaded, it could have easily been another story.

Meanwhile, between her victim’s legs, Sweetie Belle lost control of her thoughts as she stuck her muzzle straight into the forbidden folds of her sister. Once inside, she took a deep breath through her nose and shuddered as the aroma dominated her nasal tract. Finally being satisfied by the smell, Sweetie Belle pulled her muzzle out a little bit and began using her tongue to lap up at the juices that were now involuntarily starting to excrete from its owner. For the few moments Rarity was stuck in her trance of surprise, Sweetie was able to thoroughly coat every external inch of her mare hood in a layer of stringy, young-filly saliva and she was only about halfway through with the penetration of her tongue into her vagina when the elder mare finally awoke from her daze.

Swiftly pulling her flank out and away from her sister’s lapping tongue, Rarity turned around and gasped loudly at the sight before her. Sweetie luckily hadn’t had enough time to update her mental state as it was so full of lust, so for about three seconds, Rarity got a full view of her sister’s red hot face, eyes closed sensually, legs trembling and worst of all… face and tongue covered in HER OWN sexual fluids, and that was just her face! Eyes subconsciously darting down to the floor, she was able to get a glimpse at a clear, sticky liquid running down her sister’s hind leg and forming a small pool on the floor below. Quickly remembering that the situation could easily get worse if Sweetie opened her eyes, Rarity quickly turned her view away in preparation for whatever came next.

“S-SWEETIE BELLE! W-WHAT IN EQUESTRIA ARE YOU D-DOING?!” she screamed at the top of her lungs. This tone of voice was easily enough to scare her. Her eyes popped wide open and her body convulsed for a split second in reflex. A few moments passed and both unicorns stood there in silence, Sweetie Belle with her eyes on the floor both in eye-contact avoidance and shame, and with Rarity continuing to stare at one of her windows in the corner of the room. Finally, Rarity broke the silence putting on an authoritative tone.

“What is your answer, young filly?” This was enough to get an answer.

“I… I… couldn’t help myself… s-sorry,” was all she could stutter before lowering her body in even more shame and shuffling backwards toward the door.

“I’ve been telling you over and over again not to do anything of that sort without their permission,” the elder mare continued. This sentence caused a bout of retaliation for Sweetie.

“No you haven't! You told me not to use my… ability on others without their permission… b-but you’re right anyway. I shouldn’t have been invading your private areas. I just… felt like I lost control of myself for a bit there,” she mumbled. Though her appearance was apologetic, Sweetie still cursed to herself inside her head, angry that she hadn’t played out the situation more smoothly. Rarity sighed.

“Again, as you’re going through unusual circumstances with your sexuality, I can find it in my heart to pardon your actions once more,” with sympathy in her eyes, Rarity went over to her sister and pulled her into a tight hug, “but you’ve really got to stop…”

“M-maybe you should finally teach me about this ‘sex’ thing then,” muttered Sweetie Belle with anger growing in her voice. Rarity made a gulping noise and shifted her eyes to the dress she had been working on. Her face turned cold as she saw the then ruined fabric by the stray stitch.

“I’d love to Sweetie Belle… but I absolutely must get this order done by tonight! If I don’t my reputation could go down the drain and I’ll end up completely losing my business!” Though she felt she was being a little over-melodramatic, Sweetie sympathized with her sister’s situation. Silently making a decision, she then ended the embrace and continued, oriented forwards this time, her exit towards the sewing room door.

“Sweetie Belle, where do you think you’re going?” she asked. Upon registering the question, Sweetie Belle paused in the doorframe as an evil idea hit her.

“Oh, I don’t know, just… somewhere. Unfortunately, as you can see, this situation left me with a little, teensy weensy problem,” she iterated innocently before lifting her tail to flash her still sopping wet genitals at the now furiously blushing unicorn, who forced her head away.

“Sweetie Belle, I did NOT need to see that!” she stammered.

“Oh, but I think you did.”

“Okay, so now I’m starting to have second thoughts about punishing you,” said a now disgruntled Rarity.

“Eeep!” squealed the filly as she entered a full on gallop out of the boutique, “I’ll be back later, Rarity!” she cried out behind her, making sure to put an extra mocking emphasis on her sister’s name, thus earning a response from her horn. She only got to hear the beginning of Rarity’s anger filled orgasm before the front door slammed behind her, though Sweetie did not stop to wait for it.

‘Well… that didn’t work… at least I got to taste her a little bit,’ Sweetie thought to herself, now starting to pant excessively from all the running. She zoomed by a few random male earth ponies who only stopped to do what they were doing to watch the filly for a split second… only to do a double take as her swollen wet genitals came into full view beyond her tail that was easily blown out of the way due to her excessive motion. Normally, it was common for ponies to see other’s private parts, seeming as Applejack put it, they ‘don’t normally wear clothes’, but for them to be so sexually aroused… and on such a small, young school filly none-the-less, was quite the bewilderment to them. One of them turned their head to their friend and noticed an ever growing erection beneath him.

“Hey… what gives? You lustin’ over a little filly, Rock Stomper?” he asked with contempt deep in his voice. Rock Stomper was quickly pulled out of his gaze and his following movements were swift and impulsive.

“What, n-n-NO! My body just reacts automatically to seeing any mare er… filly in that state! I can’t help it! Besides, Mr. Perfect… looks like YOU’RE not too innocent yourself,” he remarked, pointing a hoof at the accuser’s own hardening shaft.

“S-Shutup!” he retorted back, face turning bright red and looking away. Luckily, the tension was alleviated as the group all burst out in laughter upon realization of how silly they were acting.

Back with Sweetie Belle, she was still impressively keeping her previous pace, despite her now powerful fatigue trying to take over her body. She had to make it to her destination; her body was just aching for it! Finally, Twilight’s friendship castle came into sight straight ahead of her and she finally decided to slow down a bit to catch her breath before reuniting herself with the alicorn. Unfortunately, because of her exercise (and somewhat because of the heat of the sun), she was now covered in sweat from head to hoof, though as if bringing some joy to her woe, the sweat seemed to add an extra scrupulous shine to her coat, which could come in handy if she hoped to seduce the nerdy mare. Finally making it to her doorstep, Sweetie Belle once again rang the castle’s door bell. A few moments later, just as she had done the few other times, Twilight answered the door with a chipper smile, though upon spotting Sweetie Belle, she quickly turned her gaze away, despite Sweetie already doing the same, and a concerned frown formed on her face.

“Oh… hello again. Like I said, I’m going to need some time to study those mushrooms. They’re sitting inside some extra-strength MCUs… er magic containment units right now, though I have yet to do anything as I just got home like half an hour ago.”

“That’s not why I’m here.”

“Oh? Well whatever you have to say to me, I’ll listen,” Twilight replied, smile returning as though to provide comfort for the small filly that couldn’t even see it in the first place.

“I… I wanted a chance to talk to you in private… like one on one without Rarity and without my friends,” Sweetie finally spurted out her mouth after finding the right words to iterate the embarrassing request.

“That’s fine. Come on in… again,” chuckled Twilight. As they walked down the hallway back towards the throne room together, Sweetie Belle voiced a concern.

“Oh, I just remembered. Spike isn’t still here, is he?”

“Um… no, actually. He’s currently out running some errands I tasked him on before you, Rarity and Scootaloo arrived this morning. He shouldn’t be back for a couple hours.”

“Phew, that’s good. I want to make sure our conversation is completely private,” blushed the young unicorn upon internally reflecting on her true intentions. She had to make sure to try and get her target’s consent this time. Twilight merely smiled to herself and reveled in the fact that she was trusted enough to probably have to go through such a personal conversation. A few steps more and the two ponies made it to their usual spots in the throne room, making sure to keep the door closed, just for good measure.

Sweetie would have liked it better if the door could lock, but it seemed to not be equipped with that function, which came off as strange to her. Regardless, she had to continue on with her plan… er… hold on what WAS her plan? Sure, she knew her goal, but how in Equestria was she going to convince a PRINCESS to rut with her? Sweetie decided to stall for time by making small talk, thus hopefully giving her enough time to come up with a plan.

“So, Twi-er Princess,” she started, making sure to keep her gaze away from the pony in question, “what’s it like being the Princess of Friendship?” Though a tad confused Twilight obliged by giving an honest answer.

“It’s… great. It really gives me such a great opportunity and purpose, you know, spreading the magic of friendship and all,” she elaborated.

“Oh really? That’s great,” replied Sweetie Belle, whose sexual tension was still easy to control as she didn’t have to look at the Princess, nor was she getting an unintentional show like with Rarity, Twilight expertly keeping her goods hidden with her front hooves and tail. After, a much longer than before awkward silence ensued, deluging the throne room in a strange kind of surreal tension. After all, there was a fully grown, adult, alicorn alone in a massive, isolated, well protected room with a tiny in comparison, somewhat impressionable, though intelligent, young filly.

“Um… is my status as the Princess of Friendship the only thing you wanted to talk to me about? I’m not sure I understand why you had to speak to me in private about it…”
Meanwhile, Sweetie was sifting through her thoughts at maximum power searching for a solution to her predicament, but no matter what she tried, nothing useful cam-.

‘That’s it!’ she exclaimed in her head, with the only physical evidence for this thought being a slight smile that wasn’t evident to the princess as her head was turned down in an angle that hid it well. After taking a few more seconds to concoct the specific words to use to begin the conversation, Sweetie Belle made her move.

“Are… you alright, Sweetie Belle?” asked Twilight with concern growing in her voice.

“I am, Princess. I was just having trouble spitting it out so I ended up making something up,” Sweetie Belle visibly shifted in her seat, giving off a hint to how nervous she was, “I know I have somehow avoided it all this time, but how would you feel if I, say, said your name?”

“What?”

“You heard me,” replied Sweetie to the unsatisfying reaction, feeling her mind boil into determination into taking over the situation. A few seconds passed in silence again as Twilight pondered the question.

“Well, I’d feel intense pleasure from an orgasm,” she started, jokingly, “but I’m sure you meant how would I feel if you did it without asking first, thus essentially intruding in my private areas.” Sweetie Belle nodded, confirming the re-clarification of her question to be accurate.

“I really sympathize with your situation Sweetie, so I really wouldn’t mind,” she finished.

“So can you explain to me the details about this ‘sex’ thing then? I’ve already asked Rarity, but she’s too busy right now and I’m desperate to know!” Twilight smiled upon realization of Sweetie Belle’s request.

“Aw. So that is what this is about? Well, I don’t know if Rarity’s going to like it, but I feel you really do need to know. Alright, I accept your request. But I must warn you, there’s quite a bit to it, though none of it is too complex to understand.” Sweetie Belle gulped and prepared herself for what was to come. Finally, she’d finally get this all sorted out AND hopefully, she’d get to press her face into yet another sweet smelling, aromatic, dripping wet mare-hood.

“So, I suppose we should start with the basics. I’m probably going to be going over a few things you already know, as you’re obviously not COMPLETELY inexperienced…” at that last remark Twilight found herself uncontrollably chuckling to herself as she imagined the embarrassed reaction Sweetie would probably be giving just then. She then cast a simple spell to levitate over a large piece of blank parchment from a random corner in the room along with a quill and some ink. She then moved over to an empty space on the floor and invited Sweetie Belle down with her. Both ponies sat on their haunches and watched the story unfold with each stroke of ink as Twilight drew a few diagrams without saying a word. Finally satisfied with her work, Twilight began as Sweetie blushed in realization as to what exactly she was drawing.

“So, Sweetie Belle, this diagram on the left shows the anatomy of a stallion and this one on the right shows the anatomy of a mare. As you can see, there are quite a few obvious differences.” Still blushing, Sweetie nodded; this action was caught by Twilight with her peripheral vision. After letting a few moments pass allowing Sweetie to examine the diagrams, Twilight continued.

“Now, biologically speaking, the whole purpose of sex is for us to create new ponies, so that even when we die, our culture can live on from generation to generation. To do so: when a male and female pony that find each other attractive are ready for the creation of a foal, they start hugging, kissing and touching each other in ways they would never touch others in order to get themselves in the mood for love making. This is called foreplay. The next stage after that is called intercourse, which is where the male pony, whose penis is now fully erect, puts his penis inside the female’s vagina.” Twilight made sure to use hoof gestures to point out the parts in particular to the silent filly.

”After it finishes its entrance, the male will then move it in and out of his partner thus rubbing his shaft. This action feels really good for both of them and eventually… well I’m sure you can guess.”

“They have orgasms?”

“That’s correct, but there’s something extra special that happens to the stallion when he climaxes. Upon having an orgasm, his penis spits out or ejaculates a ton of this sticky white substance called semen. Inside the semen are these tiny, invisible to the naked eye, creatures called sperm. When they get inside a female, they all struggle and fight their way to the female’s womb, fallopian tubes and ovaries, where it may find a small egg cell to bond with, thus starting the development of a new pony,” Twilight tried to continue from there but was interrupted.

“OH! I see! So that’s the stuff I saw coming out of Big Macintosh and all the stallions in Ponyville Square yesterday!”

“Uh yeah, that sounds about right,” Twilight replied, though she didn’t want to know what happened with Big Mac, so she stayed quiet on the issue.

“But, when I was at school I noticed that none of the colts there shot out any semen, why is that?”

“Colts only make semen after they go through a growing process called puberty, where they change from a young child into a fully grown adult. They can still have an orgasm and even get erections, but they won’t shoot semen until they’re old enough.”

“Interesting, but I still don’t get what all the fuss Rarity’s been making is about.”

“There really isn’t an objective answer for that, though most ponies like to keep their sexual lives private. That’s why it’s considered intrusive to just make them orgasm at your command, and why we need to get you back to normal. I don’t know if even I could make it without saying other ponies’ names.”

“Hey, so this is all good and all, but all my… oh uh… he he,” upon realizing what she was about to say, Sweetie began to blush, “experiences have been with Scootaloo who’s also a filly…” Sweetie decided to keep the whole Rarity incident a secret for now. This earned another snicker from the Princess who was obviously still enjoying the teasing.

“That’s because creating new ponies isn’t the ONLY reason to have sex, and not all ponies are attracted to the opposite gender. This factor is just another piece of what makes us who we are as ponies.”

“I think I may know already, but what are the reasons? And am I one of those ponies who are not interested in the opposite gender?”

“Well, obviously because it feels good and helps them to bond really well. When you have sex, your brain releases this special chemical called oxytocin, which helps form bonds. It is also released when you do other things that are close in contact such as hugging, kissing and cuddling. As far as your sexuality, that is something for you to figure out. I’m sure once you’re given enough time, you’ll know. However, given your condition, I wouldn’t trust any gut feelings you have until we can cure you.”

“I see, well I think I understand now.”

“Glad you’re satisfied, though I didn’t really cover everything…”

“That’s fine. I think I need some time to think over all this before getting more information. Thank you so much, Princess.”

“No problem, and if you have any questions, feel free to ask me or even Rarity, though I don’t know if she will respond well or not…” Twilight smiled, an action that was once again not received due to them keeping their gazes apart.

“Hey, remember when I said I didn’t want to have sex with Scootaloo for the examination?” Upon asking the question, Sweetie Belle got up and walked over to another area that was devoid of furniture or paperwork, making sure to keep her back to Twilight.

“Yeah…?”

“It’s because… I don’t want to have sex with Scootaloo anymore.” Twilight took a second to take this in.

“What?”

“Not sure why the sudden change, but I want you, Twilight,” Sweetie smiled sweetly, before turning around and watching the startled princess, who was still looking away from her, while her horn burst to life. Following that, her body shimmered in the magic before Twilight’s first magic induced orgasm zapped like a lightning bolt through her body.

“Oh…S…Sweetie B-Belle!” she moaned, losing all the regality she just had a second ago. The alicorn’s wings shot open from her sides but merely withered around uselessly as she rolled around on the cold stone floor. By the time her last contraction had passed through her body, the floor beneath her, her mare hood and her thighs were sopping wet and her mane and tail were rustled out of shape from contact with the floor.

Finally regaining control of herself, Twilight stood up and faced the filly with her eyes closed.

“Okay, what’s this all about?”

“For some reason, after I had my orgasm when I was having sex with Scootaloo… I noticed that my interests started to change rapidly. I even tried to seduce Rarity before I came here,” she said with seriousness in her voice.

Despite the situation, Twilight couldn’t help but let out a snicker. “Really, with Rarity? That must have been fun for her,”

“You have no idea… really Twilight, you look silly with your eyes closed like that,” remarked Sweetie Belle, only to cringe as her horn burst to life yet again.

“Ooops...” Despite that, Twilight fought through her pleasurable spasms to keep the conversation going.

“I do? Why t-thanks, S-Sweetie Belle! A-all the popular mares are keeping their eyes closed t-these… ohhhh… days. I thought I’d g-give it a t-try!” This earned a small chuckle from the young filly as Twilight once again forced herself back onto her hooves.

“Anyway, enough fooling around. This new piece of information could potentially be critical in the solving of your condition!”

“How so?” Twilight reopened her eyes and walked back over to her paperwork regarding the issue.

“Hmm… I’d have to collect more magical information to prove it, hence why I wanted you to have sex with Scootaloo… That’s the only problem really. You’re going to need to have sex with Scootaloo in order for me to finish that sentence!” A few moments later as Twilight watched a red glow expelling from the filly out of the corner of her eye, her own blush began to form as she realized what she had just said. Obviously, within the context, it wasn’t anything special, but she had said she “wanted” the two of them to have sex, which was embarrassing enough for her. Then the very recent memories added to the emotional concoction. Sweetie Belle said she wanted her! For a moment, she hoped that she would be able to get away with ignoring her on that part.

“Ahem, anyway. Is there a-anything e-else you n-n-need me for?” stuttered the princess to Sweetie. Sweetie Belle responded calmly.

“What I said before still stands, Princess,” Twilight took a big gulp and began to sweat and shake a little as Sweetie said the following words, “You, and, I, doing it, together, he he he,” she made sure to add the cute laugh at the end as an afterthought, hopefully earning some sort of reaction from the now furiously blushing alicorn.

“I… I… don’t know if we should do that… what if other ponies find out? What if RARITY finds out?”

“So what if they do?”

“Not many ponies approve of an adult doing that with a filly… and that’s an understatement.”

“…hey, so your first concern is that other ponies might find out? Not that you don’t want to do it with me?”

“I didn’t say that.”

“No, but you didn’t bring it up as the first issue.”

“Y-yeah but…”

Twilight Sparkle, the princess of friendship, had been caught. By now, Sweetie was sure that this constant barrage of stuttering and argument back and forth was soon to end in the best way possible for her. Finally, Twilight sighed.

“O-okay… you got me. I’m not entirely opposed to the idea. But if we do it… we MUST keep it a secret.” By then, Twilight’s face was on fire, and Sweetie Belle chuckled at this as she took a glimpse at the side of it.

“Not a peep will be heard from me. Cross my heart, hope to fly, stick a cupcake in my eye!” chimed Sweetie Belle, excited that she had won.

“F-first of all, I’d like it if we could blindfold you again… n-not for any reason other than to prevent you from accidentally getting another huge headache!” added the Princess.

“No problem,” replied Sweetie Belle. At the confirmation, Twilight used her magic to conjure up a strong patch of completely opaque magical material, which she then levitated over to the unicorn and fastened it in a way that was sure to thoroughly block her vision. Flirtatiously, Sweetie Belle decided to give the alicorn a little tease. She about-faced from her direction, bent over a little and moved her tail to side to reveal her once-again soaking wet filly hood. Though she was still unsure if she should do this, Twilight had to admit she enjoyed the gesture. This cute little filly was more than willing to perform some of her deepest and least explored fantasies she had been having randomly over the course over her life. How in Equestria could she pass up an opportunity to learn more about herself in such a way? This flirtatious move also seemed to flip a hidden switch inside the alicorn and after her next sentence, Sweetie had to question if it was even Twilight who was still in the room with her.

“My my… you really are a naughty filly.”

‘Naughty? What does she mean by naughty? Am I doing something wrong?’ Sweetie thought to herself, but in an effort to not spoil the mood she decided to play along, but before she could say anything, the sudden sensation of something coming into contact with her filly hood cut her off.

“Look at how wet you are. I guess since we were on the subject of sex education, this would be a good time to tell you about some rather… colloquial terms… like for example this would be your pussy.”

“My… pussy? You mean like a cat?”

“Uh… yeah, sort of,” Twilight responded slowly. That very sentence seemed to knock her a bit out of her horniness filled haze and a small splash of guilt hit her conscious.

“So yeah… are you ABSOLUTELY sure this is okay. We really shouldn’t do it if you have even the slightest doubt you don’t want to. I’m serious Sweetie Belle.”

“Mmm, yeah I’m fine, and don’t stop touching my… pussy,” purred Sweetie Belle in response. Letting the guilt fade away to the back of her mind, Twilight greedily complied.

“You’ve already been so generous in giving me two orgasms already, so I think it’s only fair I return the favor. I will make sure you don’t leave this castle until you cum! Oh yeah, and cum is the colloquial term for orgasm! It sounds a lot less awkward, don’t you think?” rambled Twilight with perverseness shaking her vocal cords. Sweetie Belle didn’t know what to say, so instead she reverberated the new term, letting it soak in her mouth as she contemplated it.

“Cum… cum… I want you to make me cum, princess!” moaned Sweetie Belle as Twilight continued to rub her hoof around her labia and clitoris.

“You got it, Sweetie. You see this little nub here? This is called your clitoris, or clit and it is responsible for the best feelings of all!” mumbled Twilight as she was thoroughly distracted by the wonderful sight before her.

“I’ve already understood that much, though I didn’t know what it was called… my clit… please rub my clit more Twi-er-Princess,” begged Sweetie now completely under the influence of her own horniness.

“I can do much better than just rub it…” said the sexually-flushed alicorn as she brought her face close to the young filly’s genitals and took a strong whiff of her intoxicating aroma. Finally, she stuck her tongue out and experimentally flung her tongue around the sopping wet surface, first starting at the top near her anus and then slowly bringing her head down towards the area Sweetie wanted her attention so badly. Finally after sufficiently building the anticipation, contact had been made and Sweetie Belle let out an adorable squeal as Twilight sent shockwave after shockwave of pleasure through her small marshmallow body. This action earned muscle tremors in Sweetie’s legs and she had to concentrate on keeping her balance for a moment so gravity wouldn’t force her genitals away from the wonderful intruder’s tongue. After the nth time fighting this battle, Sweetie reached back behind her and pushed Twilight’s head back a little.

“I think I should lie on my back so I don’t fall over. My legs are starting to fail me,” chuckled Sweetie Belle, “but other than that, don’t you dare stop licking. It just feels so bucking good!” At that, Twilight honored her request and backed off a little while Sweetie quickly flopped over onto her back. There was a brief moment where nothing seemed to be happening to Sweetie Belle though she did hear a few hoof-to-ground clopping noises as Twilight seemed to be moving. Finally, she was rewarded with her partner’s soaking wet mare-hood sitting directly in her face, and Twilight’s muzzle once again being buried in the filly’s.

Sweetie didn’t even need to be commanded on what to do just then. She knew exactly what Twilight wanted her to do and she was more than happy to oblige. While Twilight continued to focus on her clitoris, Sweetie stuck out her tongue and blindly explored the new, sopping wet, tangy territory. Though she was probably just imagining it, she thought she tasted the familiar flavor known to her as a grape, and she loved the sweet, amiable flavor of grapes. But the best part to her was the texture; Twilight’s folds and vaginal walls were extra soft and velvety and Sweetie just couldn’t get enough of Twilight’s inebriating sexual musk which was now beginning to splatter all over her face, down her chin and neck and onto her chest.

Finally, Sweetie felt it. The sensations she had been fighting for over the past few days were once again dawning upon her.

“Oh buck, do not stop! It’s happening, I’m gonna cum!” swore Sweetie Belle through the elder mare’s delectable folds. By now, Twilight had varied her technique and was sporadically diving her tongue in between Sweetie’s folds deep into her moisture filled vaginal walls while still providing direct clitoral stimulation along while murmuring a slight hum that was appending even more stimulation to Sweetie.

“Oh…. yeah!!! Ungggmmm!” moaned Sweetie pleasurably as her body was rocked with her second orgasm that seemed several times more powerful than the first. Twilight chuckled as she reveled in her reward with the vibrations from Sweetie’s cries of bliss melting into her mare-hood and the extra splurge of moisture erupting from her insides thus covering her muzzle, lips, chin and nose in satisfied marshmallow filly love goo.

By the time Sweetie’s orgasm subsided, Twilight found herself nearing her own climax. Almost instinctually, she pressed her genitals just a tad harder against Sweetie’s mouth which was still suckling at her affectionately. Finally with one final bout of stimulation to her clitoris, Twilight lost it and she couldn’t help but eject her screams throughout the walls of the empty castle as her vaginal walls compressed and surrounded the invading, underage tongue, impressing any more moisture it had available into the cum/saliva mix. Finally, after a few more seconds of noises only producible with the presence of pleasure, her sensations faded from the alicorn and she forced herself to roll over to the side of the filly despite her weakness and lay on her back so she wouldn’t accidently end up crushing her. Finally a few seconds later, Sweetie Belle spoke up.

“H-hey… did you notice my horn when I… uh… cummed? I thought I felt it coming to life again.”

“The past tense to ‘cum’ is ‘came’, Sweetie, and no I didn’t notice.”

“Well, were you recording the details with your magic?” A slight pause passed.

“Oh, buck! In my aroused state of mind I completely forgot!” cried Twilight quickly getting up to her hooves so she could look around for her notes, but before she could she noticed that there was another, much more important issue at hand. In surprise, she let out a deep gasp.

“What? What is it?” asked Sweetie Belle, worry evident in her voice.

“S-sp-sp-sppppp-SPIKE! You’re home early,” cried the alicorn, embarrassment dominating her insides from head to hoof. Upon the mention of his name, Sweetie Belle let out a small, wimpy cry of fear. At least she didn’t have to look at him, considering the blind fold and all.

“And… would you like to explain to me what in Equestria is going on here?” he asked accusatively.

“It’s not what it looks like!” cried out Sweetie in an effort to alleviate any misunderstandings.

“Really? Then would you explain to me why you two were nose deep into each other’s private parts?” Spike had his arms folded and he tapped his foot as he waited for their response. Unfortunately for him, all he earned was a continuous string of unrecognizable babble from both of them. A few moments passed before the two sex-juice covered ponies ceased their efforts and remained silent in realization that they weren’t getting anywhere that way. Finally, Twilight asked the most pressing question of the moment.

“H-how long have you been watching us?”

“Since you were so generously explaining what ‘cum’ meant,” he deadpanned, putting extra-emphasis on the dirty word. Twilight face-hoofed and groaned to herself in shame. Sweetie merely sat there for a moment contemplating the situation.

“So since you got such a nice outside view of the show, did you happen to notice my horn glowing at any time?” asked Sweetie Belle, trying to ignore the embarrassment.

“Now that you mention it, yeah, though it didn’t seem to be glowing your usual green, Sweetie Belle. Instead it was this creepy gray color.”

“GRAY?” exclaimed the other two in unison.

“This is an interesting development," Twilight remarked getting up and retrieving her supplies before beginning to mark down the new information.

“Um hello? You still haven’t sufficiently explained to me what’s going on!” complained Spike.

“Since Friday, I’ve had this really weird magical problem,” started Sweetie Belle.

“…and I’m trying my best to help her get rid of it!” finished Twilight.

“…by eating her out?” asked Spike, once again deadpanning his words. Though Sweetie hadn’t heard the term before, she could easily guess what it meant.

“Don’t ask. Besides, this just isn’t ANY of your business, and I’m completely disappointed in you Spike for not leaving the second you stumbled upon us!”

“It’s not my fault you were doing… doing THAT in the most public place of the castle!” Twilight merely face-hoofed at her own ignorance before sighing in defeat.

“Okay, fine, I should have spent more time contemplating the decision, but what’s done is done and there’s no going back.”

“So what is this ‘weird magical problem’ anyway?” he asked curiously, but before any pony could answer, Sweetie Belle’s horn involuntarily sprung to life again, though this time, it faded to the color just then previously foretold by the dragon. Sweetie, who was then very confused felt her head begin to ache just a little bit, too much to be comfortable, but not earthshattering like she’d experienced before. Simultaneously, Twilight dropped her quill onto her notes thus creating random splotches of ink at its contact points as she collapsed into another mind shattering orgasm… as did the dragon. His once previously hidden genitals were now completely visible and he was rolling around on the ground in pleasure as his body was rocked with his very first orgasm. As he was still young, no seminal fluid escaped the tip, but that didn’t matter to him. All that mattered were the excruciatingly pleasurable contractions happening inside his dragon-hood.

“What? What’s happening?” cried the panicking unicorn as she tore off her blindfold at last. She looked around and watched in horror as both of them rocked and shook as shockwave after shockwave exploded through their now fatigued bodies. Sweetie closed her eyes tightly, hoping that somehow it would end the episode, but no matter what she did, Twilight and her assistant’s spasms failed to cease.

“Get… get out of the room!” Twilight managed to utter despite the great difficulty it took. Sweetie Belle took this command to heart and she galloped into the hallway just outside the throne room. Patiently, she observed the others ride out the rest of their climaxes before her horn finally settled down and they were released from their pleasure prisons. Five minutes passed and neither pony nor dragon uttered a word of any kind. Finally, Twilight mustered up enough energy to get back up on her hooves. She turned towards Sweetie Belle out in the hall and focused as she created an ultra-powerful magic containment shield around the now startled filly, carrying her up into the air like a bubble.

“It now looks like simply being near you is enough to trigger your power, Sweetie. We have to get you to containment and fast!” Still too startled from the magic to reply, Sweetie merely nodded though the action went ignored by the alicorn as it was probably too risky to look at her, despite the fact her magic would probably protect them both. The downside to this spell is that it was intensely draining and could only be cast for a short time. Twilight had to act fast.

“We’re gonna go for a little flight, Sweetie Belle.” At that, the alicorn raced into the hallway and the magic containment bubble followed her at almost the same pace. Finally leaving and locking the front door behind her, Twilight ignored her extreme fatigue as she spread her wings and pushed off the ground with a powerful flap and began soaring into the air at an incredibly high speed, as an alicorn’s wings are typically stronger than a normal pegasus’s.

Luckily, throughout the short flight back to the Carousel Boutique, Twilight was able to maintain her composure, though it wasn’t long before she felt it’s incredible weight on her energy supply.

Finally, almost as swiftly as she took off, Twilight landed at the doorstep of the boutique, rammed open the door with another bout of magic, raced up the stairs, rammed open Sweetie’s bedroom door and practically threw the filly onto her bed. Finally being relieved of the draining spell, Twilight slammed the door closed thus finally sealing Sweetie in a safe zone whilst keeping other ponies safe. Twilight sighed as she heard the expected noises of her elder sister racing up the stairs on account of the sudden noises.

“Twilight?! What are you doing here? What happened?” Twilight smiled weakly in response.

“Looks like we made another advancement with Sweetie’s little problem,” she muttered weakly. Rarity tilted her head curiously as Twilight spent the next few minutes detailing the events of that afternoon, and yes, she even included the detail that the two of them had a bit of fun together, thus triggering the events. In the end, the entire story was told unabridged to the now unblinking fashion mare. There was silence for a few moments as she took the story in. Finally, she reacted in a way that Twilight had been expecting the whole time.

“YOU DID WHAT TO MY SISTER?!” she shrieked like a banshee. Luckily, Sweetie Belle called out through the door in her effort to defend the poor alicorn.

“She was only trying to help me, sis! I was the one who initiated it and she even put in the effort to educate me about sex, unlike you!”

“Don’t lie to us. I know that you know she’s telling the truth. She told me that she even tried seducing you into doing the same thing before hand,” chortled Twilight with a smirk.

“I actually got to taste her for a bit. Despite my short time in that position, she actually leaked quite a bit of fluid. Quite the eloquent taste I’d say, like some kind fruit you’d only eat if you were rich. I wish you’d share your recipe with us so we could relish in your delectable flavor all the time!” teased Sweetie Belle in tandem.

This only earned a bunch of random, incoherent babbles as she took this string of jest in. Finally she gave up and let out a sigh.

“Fine, now is obviously not the time to deal with that, but now Sweetie’s stuck to her room and her condition is worse than even before. What are we going to do about it?”

“Here’s the good thing about what I did, Rarity. I learned exactly what we need to do to alleviate her of this problem once and for all.”

“It doesn’t have anything to do with bucking her brains out, does it?” asked Rarity with intense sarcasm in her voice.

“Actually… yes it does.” Rarity groaned. She should have known.

“From all the evidence I’ve gathered, it seems to me that whatever’s inside her is trying to escape. It doesn’t WANT to be in her body, but it has to in order to survive. My plan is to continue feeding this thing until it escapes, where we then beat the shit out of it!” Rarity rolled her eyes.

“That sounds like a horrible idea, Twilight.”

“I know, but it’s really the only chance we got.” Rarity though annoyed, mused and thought over it for a moment before settling in on her last hope.

“How about this, you keep on doing your studies and see if you can find some other way. If you don’t find anything else by Wednesday morning, we can try your idea.” Twilight sighed.

“Fine, if that’s what you want. Hear that Sweetie?” a short moment passed before a short, squeaky response flew through the door.

“y-yes…”

“And don’t you worry, Sweetie Belle. I’ll round up your friends and we’ll all work together to keeping you sane,” enthused Rarity.

“I better be getting back to my castle then. I’ve had enough for one day,” said Twilight beginning to make her exit.

“Good luck, princess!” called out the fatigue filled filly behind the door.

“Don’t worry, Sweetie Belle. We’ll figure out something,” she called in response before finally stepping through the front door, spreading her wings and taking off into the wide open sky that was then being tinged by the then setting sun.

Author's Note

I may have went too long without eating while writing this chapter. Took about 8 hours of work, though I feel the end result it soooo worth it. Before hand, I had imagined the sex between Twilight and Sweetie to be much more awkward with the alicorn being super reluctant, but I figured it was more in character for my version of Twilight to do this instead... not to mention it was more fun to write her like this too.

Next chapter gets really crazy. Comments, likes, favorites and all that jazz are always appreciated! See you next time!