Straining ever so slightly, as powerful unicorns do, I finally released the hold on my magic; my horn rapidly cooled as the spell I had been labouring over, practicing, and repeatedly trying to accomplish finally faded—its only lasting remnant was a smile, clinging to my muzzle as I stood in awe.

Trixie had done it! She had worked and she had worked, and like many of the new spells that now made up her growing repertoire, she—I had mastered another! I let loose a grand cheer as I leapt in place, unrestricted joy bouncing and resonating across the surfaces of my trailer as I attempted to let all of Ponyville know.

Unfortunately, it seemed the world didn't see the glorious merit of my accomplishment, as I heard no shouts of congratulation from the streets outside, no melodious fanfare marking Trixie's accomplishment. No, the town's unanimity in disinterest was apparent, but it mattered little.

Giggling to myself, I trotted the few steps across my trailer with a determined gait, arriving at the blackboard hanging on my wall and levitating a piece of chalk over to immortalise my success. "Invisibility, check!" I laughed, promptly flicking a little tick to the right of the word and setting the chalk down, still feeling the tremors in my legs.

I wasn't entirely sure whether it was the excitement of finally getting it right or the physical exertion my new spell exacted, but my body was tumultuous, buzzing with activity as the dissonant vibration throughout mellowed into a pacifying hum. But Trixie had no time to be calm, she had to celebrate!

And what better way to celebrate than to show Starlight? The thought filled me with glee, as I knew that this one would really impress her; Starlight had told me before that invisibility was very advanced magic, and it seemed that all of my magical theory books were in stark agreement. I blinked, the implications of my last thought hitting me. Did this mean that Trixie was finally an advanced magician?

Hmm, if Trixie was, then maybe her and Starlight's dynamic would begin to change? Perhaps Trixie would be the one to teach Starlight new things, and perhaps Trixie could also be the one to praise her for a job well done? In fact, perhaps such a shift in power would cause Starlight to be enamoured by her, and Trixie would be able to use her superior magical skill to showcase just how irresistible she was, manipulating and contorting ropes, snaking them around Starlight and holding her down, showing her just how powerful she could be...

...Perhaps Trixie needed to get her mind out of the gutter. Or, maybe Starlight needed to stop staring at her plot when she thought she was being sly and just make a pass at her already. Honestly, you could cut the sexual tension between us with a knife.

I cast the thought off with trembling hooves. Regardless of whether anything would ever come of our obvious mutual attraction, what mattered right now was Trixie's accomplishment, even if it might very potentially bring her one step closer to earning Starlight's affection—not that that was the reason Trixie practised all these spells, not at all.

Rushing outside and shutting the door with a swipe of my hind hoof—my cape and hat left forgotten on the bed—I began battling with the torrent of biting winter wind assaulting Ponyville. My journey to the castle was spurred on by two things: My eagerness to show off my new ability to Starlight and my rapidly freezing fetlocks. What I wouldn't have done for some heat right then.

When I arrived at the castle I was shivering all over, but I shook off the feeling, steeling myself and preparing for the spectacle I was about to create. It was much like shaking off pre-show jitters, and at least the wind hadn't managed to invade the castle as I walked through it in search of Starlight.

It didn't take me long to find her room, but after knocking twice to no answer I opened the door to find the room completely empty. I found that odd. Of course, there was a chance that she had been called away on friendship business, but that was still an unlikely occurrence. An eyebrow raised, I slowly stepped into Starlight's room, glancing around for some hint of where the mare might have gotten to.

It didn't take me long to recognise the hiss of running water, and a glance to Starlight's en-suite bathroom confirmed it. The door was askance, as was Trixie's head as she found herself drawn forwards, the open door almost like an invitation, but she stopped before she could make contact with it, lowering the volume of her movements and craning her head to the crack in the doorway in an effort to confirm her suspicions.

In the bathroom, the shower curtains were half-drawn, and steam rose from the inside as the shadow of a figure danced in my peripherals, but I couldn't make out any details no matter how I tried.

And yes, Trixie did try. She tried hard, shifting and rearranging herself in an attempt to witness her friend, but to little avail. Trixie may not have been proud of it, but it was what she did. Trixie was decisively less proud of what she did next.

A smirk coming to her face, Trixie realised that this could be the perfect opportunity to test her new spell, and although her conscience told her no, the rising heat in her belly seemed to appreciate just how taboo of an idea that was, just how magnificent it might be.

I cast the spell, and with a moderate amount of effort, I enveloped myself in a shroud of nothingness. I could still see myself, so to make sure that my spell had taken effect, I walked over Starlight's bedroom mirror and began to admire myself, finding absolutely nothing in the reflection. Trixie really was too powerful.

Still, even with invisibility on my side, I had to be careful not to make too much noise. The shower might muffle a little sound, but if I went bounding in there like I would have liked to, I'd probably get shot halfway across the castle. Best to stay calm, try and forget how bad this is, and prototype this new spell. That's all I'm doing, prototyping a new spell.

Nevertheless, I gulped, knowing that wasn't the case, not even half of it. I made my way over to the bathroom door with timid steps, painfully aware that the plush carpet would end soon, and I would have to progress on the hard bathroom tiles. With that in mind, I stooped onto my belly, keeping low to the ground and bending my legs as I crept through the bathroom door, my horn still alight with the spell active, not that it could be seen.

Once Starlight was in my view, I felt my lips part in shock, my horn almost stalling as she threatened to capture the entirety of my focus. There she was, shower gel in her magic as she worked it into her fur, caressing her chest with a hoof as a small smirk sat on her face, the steam rising around her, her curves accentuated by the dampness of her fur. Her mane hung low, and her tail billowed and swished as she stood in place, causing my ears to stand high and my breath to catch in my throat.

Trixie was impressed, verily so. While she had always been one to leer at Starlight, much like Starlight did at her, she had never had this chance to witness Starlight looking so radiant, so luminescent, and performing an act so sensual. It wasn't just what she was doing, it was the way she did it: Slowly massaging suds of soap into her fur and wiping them away with smooth, delicate strokes of her hoof. A small twist as she craned her body to see her tail, running shampoo through it as she sighed in relief. A luscious hum sounding from her lips as she bounced in place, and worst of all, when she laid down, finding herself content in rolling around and allowing the water to spray over her chest, soaking her.

Trixie may not have been soaked, but she was getting there. Is this how mares other than her showered? Eyes closed, tail to the side, looking so perfect that Trixie was having to fight a losing battle not to make herself known? Not that she could, of course—there would be no recovering from that.

I concluded to see my experiment through, sitting and watching as she enjoyed herself, all the while realising that as she cleansed herself, there was a serious situation arising between my legs, one that I wasn't sure I could take care of, no matter how much I might have wanted to.

It was now that Starlight chose to torture me, grabbing a soapy washcloth and running it along her hind legs, lathering them up and then scrubbing them from top to bottom, though she stood at an angle that prevented me from seeing what I most wanted to. It wasn't fair, it really wasn't. Trixie had come in here for fun, and all she was receiving for her troubles was an arousal she was forced to ignore! How was it acceptable for Starlight to taunt her like this and not allow her to relieve herself?

I had to stop and contemplate whether I was really going to do what I was planning before I went ahead. Yes, even I realised how terribly wrong this was, but in the end, my lust won, and I couldn't help myself any longer. With the smallest of sighs, I slowly, discreetly planted myself against the wall, staring up at Starlight's body as I felt my marehood longing to be pleased—I needed to play with myself right now, or I would surely explode.

I released a bitter, impatient breath as I allowed my hoof to brush over my chest, playing with a small tuft of chest fluff as I became attuned with the sensations of my own body, all the while watching as Starlight ran her hooves and magic over hers, a flurry of inviting contact and almost provocative reactions hastening the descent of Trixie's hoof, causing her to slowly rub up her hind leg, almost brushing her most sensitive area as she looked on at Starlight's kittenish display.

The first brush against her pussy was like a thunderbolt igniting the most erogenous facets of her body, the multifaceted shock forcing her to bite on her lip as she choked out a gasp, which only wanted to be free. With another short motion, she felt the heat build again, and in an instant, she wondered whether the room was hottest in the wet, steamy shower, or in her chest and stomach, where she forced herself to remain still as her body threatened to jut from the feeling.

After a few seconds and a couple of shallow breaths, I tried my hoof once more. Luckily, my body had adapted to receiving the sensation in such a strange setting, as I didn't instantly feel as if I was about to burst with the third stroke, but my clit was still extremely sensitive in this condition, and despite Starlight's oblivious nature, it was as if she was the one with all of the control.

There was nothing I could do to influence that, only sit as quietly as possible, attempting to stifle my moans and brays of satisfaction as I threw my head back, producing a small thud against the wall which thankfully went unnoticed. My hoof was running around my pussy in circles, and I could feel the fur of it beginning to grow wetter and stickier as I worked up my endurance, not allowing myself to cum too quickly despite the clear evidence that I couldn't bring myself to last long as I watched Starlight's performance.

It only got worse. Much worse. Turning her head away from me, Starlight began to massage gel into her plot, softly wiping her cheeks and working over her cutie marks, her tail lifted and gently drooping to the side as she brushed over every area, causing her flank to lightly jiggle, putting on a show that Trixie would have paid a million bits for in a heartbeat. Trixie could swear that Starlight deliberately lingered on her flanks for a little too long, but maybe she just enjoyed groping her own ass. I knew I'd certainly enjoy it, and I wasn't going to complain about the sight of it, either.

I wasn't prepared for what came next. Starlight turned, and I'm almost sure I caught a playful little smirk on her face as she slowly levitated the soapy cloth up to her pussy, teasingly rubbing against it and almost driving me into a frenzy. I could feel the pace of my own rubbing increasing in tandem as I watched her clean herself in small, painstakingly infatuating movements, little sighs of pleasure rolling from her throat as she twitched from the feeling, a small 'nghh' escaping her as she brushed against her nub for much longer than necessary.

It was all so beautiful, so sexy, and with a devious passion, she continued to perform, spreading her lips and giving me a glimpse of her sweet little hole, which I so wanted to bury my face in like a thirsty pup. Her eyes lingered on the wall behind me as she continued to tantalise me with her body, and as I brushed and flicked against myself—my other hoof pressing hard against my thigh as I drew ever closer to my peak—I realised that her smile was beginning to grow and that her eyes barely left that space on the wall.

That space directly behind me. My heart was suddenly hammering against my chest for a completely separate reason. I froze in my motions and made an effort to keep my breath contained, caught in inertia as she appeared to look through me, knowing that I wasn't visible but feeling exposed all the same as I forced myself not to make a single sound, lamenting my body's inability to control its breaths as I halted on the cusp of orgasm.

Finally, when the earth had spent a millennia standing still and time had been frozen in fear for just as long, she spoke at the wall. "Good first attempt, but you really are still an amateur," she chuckled, her eyes still trained on me.

It felt as if it was a challenge, and the arrogant Trixie inside me was desperate to meet it with her own scathing words, but I remained silent, hoping the lack of response would convince Starlight that whatever she thought she had seen was just her imagination. I had no such luck.

"I know it's you, Trixie," she giggled, her eyes shining, her magic still manipulating her tight pussy as she spoke. "I could hear something already, but your horn is what really gives you away."

Again, silence. Maybe I could run now, go and hide somewhere, and as long as Starlight didn't catch me and I had a good enough alibi, there would be no way of knowing that it was me that was spying on her, and not Twilight or someone else.

"Your spell kept flickering out," Starlight explained, slowly turning to face me but remaining in the shower, angling the nozzle away so as to not obscure her vision, "And I could see you down there, rubbing one out over me as I showered..." Suddenly, Starlight's eyes became hard. "Drop the spell, Trixie. If you don't own up to it I'm going to be really pissed at you, so just come out already. For Celestia's sake, I can even see where you've dripped on the floor, there's no point in pretending not to be there."

With a jolt of alarm, I realised that Starlight wasn't bluffing—there was indeed a small collection of my juices spilt out onto the floor, in no way protected by my spell. I let out a small shudder as I let my spell up, the embarrassment of the situation was bad enough already, but now that I knew that Starlight's eyes were literally on me, judging me, I could barely bring myself to look at her—I felt ashamed.

Starlight said nothing, she barely seemed to move. She seemed content to wait until I looked up at her, and after a few moments of hesitation, my chest still rising and falling from where I laid as I felt my fledgling orgasm fading away, I finally met her gaze. It was soft, forgiving, and above all, lustful. Could it be that she had somehow enjoyed my being there? That she didn't wish to curse me, to shout at me, to never see me again?

I could barely believe it when she beckoned me over with a hoof, but my legs needed little instruction. I rose within moments, gingerly walking across the room to meet her, and instantly her lips were upon mine. Trixie could taste energy and passion mixed with her own shock, and Starlight's tongue felt as if it was a joy that had been missing from her for as long as she had known her. She—I needed more of it. Now.

Stepping into the shower as I deepened the kiss, I felt the water beginning to slap against my barrel as I slowly lapped at Starlight's tongue with my own, my nerves buzzing as my eyes flittered shut, my body in a state of overdrive as I tried to comprehend all that had happened in the last minute or two. I could feel a primal urge awakening inside of me, compelling me to splay Starlight out and kiss and nip at her entire body, ending my journey at her enticing pussy, but as soon as I went to bear any force against her, I was pushed back. Starlight exerted control over me with a surprising level of strength as she backed me against the wall, the water beginning to hit more of my body.

"Hey, Trixie," Starlight grinned, and in her eyes I could see something powerful, almost intimidating, but overshadowed by the softness of affection, "You wanna see a real spell?"

Trixie opened her mouth to respond, unsure what to say, but willing to wing it if only to get off the back hoof, but Starlight put a hoof to her lips, muffling her. In a blue flash, Starlight's whole body was enveloped by a shroud of magic, and over a short space of time, that magic began to concentrate around one specific point between her legs, congealing and forming into something long, magical, and glowing.

My eyes widened as I took in the scene, and it took me a moment to realise just what I was in for. As the glow began to subside and the magic faded, I was left head to head with a large, thick stallion's cock, dangling between Starlight's hind legs. My face twisted in confusion, but I couldn't help spluttering out a small laugh at the absurdity of it—it wasn't every day that your friend grew a penis. When my brief reverie had subsided, I realised I was still faced with a rather large conundrum, a seven or eight inch one, to be precise.

"Wh-what's that doing there?" I asked, pointing out of impulse, although I'm sure it was entirely unnecessary to indicate just what I was talking about. I was extremely turned on, but the sheer surprise of seeing Starlight with such an unnatural and, well, welcome new appendage was still gripping me.

Moments later, I was the one gripping it, my curiosity essentially forced it. Starlight had sat back against the wall of the wide, warm shower, and allowed me to marvel at the weight and girth of her cock, feeling it and rolling it around in my hooves, running my eyes along it, receiving little gasps and 'ah's in return. It was then that I realised that this carried all of the sensations of a real cock and that Starlight could feel everything I was doing the same way a stallion could. That gave me an idea. Leaning forwards, I softly brought my tongue against the medial ring, licking around it and then flicking down the shaft as I trilled a soft vibration over its length. Rolling your tongue had its uses, after all.

My movements elicited deep gasps of sensation, and with a hoof I reached back and began to pleasure myself once more as I kissed and licked at the impressive slab of cock in front of me, slowly working my way up and down it, eventually coming up to the tip, looking Starlight dead in the eyes as I opened my mouth and began to sweetly suck on it. I was shocked to find a hoof in the back of my mane, pulling me forwards and further down onto her cock, pushing it deeper into my mouth and making me gag in surprise as it filled my throat.

She began to thrust, my eyes settled on her soft belly as she pushed it deeper inside of me. I could feel it bulging in my throat, but tried to ignore the pain for the reluctant joy of being used, not protesting but staying in place and doing my best to be a good cocksucker for Starlight, taking my hoof from underneath me and bringing it up to jerk Starlight as I slid my mouth up her, sucking half of her and massaging the base as she moaned and swore in a frantic lust. She began pushing it in and out as quickly as she could, and I dutifully kept my mouth in place to suck at it, teasing her with flicks of the tongue as she repeatedly drew it out and planted it back in.

It only began to feel more thick as her pants and grunts of satisfaction coned, reaching a higher pitch as she began to fuck my mouth with little care for me, not worrying if I could take it, if I could carry on, or even if I could breathe, only wanting to bury her cock in my soft throat over and over until she came. After lashing my tongue around her head and running a soft, wet hoof against the base, I finally produced some results, Starlight pulling me back and spraying her cum all over my face and chest.

I kept my mouth open and my tongue waiting as she emptied her load all over me, but despite my eagerness, I received little of the tasty fluid. I wanted to swallow it all, to swill it in my mouth and appreciate the taste of Starlight before drinking it, but I had been denied that right just as I had been prevented from cumming earlier.

When I looked back to Starlight, she was still hard, and within moments she pulled me up to a standing position. "Face the wall," she said, pointing to the one by the shower curtain.

I couldn't help but ask. "What, why?"

"Because you spied on me while I was showering and now you're going to take your punishment," Starlight smirked, a hint of cruelty in her tone, but I knew we were both loving it.

"Well, will you at least try to make Trixie cum?" I asked, my brow furrowed as I stared at her. "I did help you out just now."

"Well, if your pussy's anywhere near as good as your mouth, I just might," Starlight winked, nudging me and pointing at the wall once more. "Now get your hooves on there, spread your legs, and keep your mouth shut."

I nodded, a small shiver shooting through my body at the force in Starlight's words. I instantly placed both forehooves against the tiled wall, planting my hind legs against the shower mat and looking back to Starlight with a soft smile. "Like that?" Trixie purred, beginning to feel in her element.

"Yeah... Like that," Starlight nodded, but she seemed too enthralled by the sight of Trixie's ass to keep up her bravado.

Trixie appreciated this, she could almost feel the power coming back as Starlight ogled her. "So, are you going to keep staring all day or are you going to take me for a ride?" Trixie smirked, giving her opponent a derisive glance as she sized her up. She knew Starlight couldn't truly stay mad at her, after all, now that she told her whenever she was angry instead of keeping it to herself, so if she was already getting her own back what harm was there in goading her a little?

Apparently, a lot. When Trixie felt the shower nozzle brush against her asshole, soaking it, she had little idea what was going on. When she felt Starlight rubbing her shaft against her tight anus, she had an inkling of what was going on. When Starlight pushed her cock inside, slowly filling my ass with inch after inch of her as I struggled not to cry out, I knew exactly what was going on. "N-not that hole!" I shouted, glaring back at Starlight, "You didn't even warn me!"

"So?" Starlight grinned, pulling back a little, causing Trixie to sigh in relief. "Wait, don't tell me," she started, driving her cock back inside as her hooves joined mine on the wall, "Trixie isn't tough enough to take a big cock in the ass?"

"Tr-Trixie is tough!" Trixie defended, a blush colouring her cheeks from the mixed pain and pleasure of being rutted in such a tight hole, "Trixie can take anything!"

Starlight's grin grew unnaturally wide. "Oh, is that the case?"

Trixie vivaciously nodded. Of course, it was the case, Trixie was Trixie, and she was powerful, she was resilient, she was—ohmyheavensitfeelssobig! Trixie tired to stifle a scream but she couldn't manage, her hoarse cry of pain and pleasure sounding out as she took the entirety of Starlight in her ass, feeling it fill her completely with not an inch of space left.

Hearing this, Starlight backed up a little, and when Trixie looked back, she saw a look of concern on Starlight's face. "Are you alright?" Starlight asked between pants. "Do you want me to—"

"Why did you stop screwing Trixie?" Trixie demanded, both eyebrows raised.

"Well, I'm sorry, I thought you were hurt, and—"

Sighing, Trixie pushed her weight into her forehooves, wiggling her flanks as she backed up further onto Starlight's cock, speaking between a light wince as Starlight's breath left her. "Does Trixie look like she's in pain?"

Starlight said nothing to this but quickly began pumping, her cock driving hard into Trixie's ass, causing them to both lurch forwards as they struggled to keep their footing in the slippery shower. That was part of the allure of it though. The pain, the risk of the situation, the pleasure that came from it... The control, the struggling and fighting for dominance, the feeling of her pumping inside me, ramming me harder and harder with each motion, each push deeper into my ass.

With a couple of quick taps on her barrel, I commanded Starlight to stop, taking control with my ass as I rode her where she stood behind me, bouncing up and down from our upright position as best I could, sliding my asshole down onto her and then all the way back up to the tip, at first slowly but swiftly increasing the motions, planning to milk every last drop from Starlight's magical dick.

And with the way Starlight's breath was beginning to husk as she nipped at her ear, Trixie believed that she might have been doing the job. She pushed down harder, impaling herself again and again in an attempt to bring Starlight to her second orgasm, her best apology for spying on her and promise to definitely do it again. Again she felt Starlight's cock beginning to thicken inside her, and again she assumed that orgasm must have been close and just as she was about to push Starlight down onto the floor of the shower and fully take control, she slid out, placing the rock hard prick against the lips of her pussy, spreading them around it so they hugged on the tip.

This flashed alarm bells in Trixie's mind, and she turned to face Starlight. "You're quite close right now, aren't you?"

"Don't worry," Starlight smiled, realising her concern, "I'm like ninety percent sure that you can't get pregnant from this."

"Ninety?" I scoffed, eyes wide.

"I'm kidding," Starlight grinned, pushing it further inside, and all chance at conversation was lost for Trixie's strong moan, her body shifting to the left and her hooves getting tangled in the shower curtain as she adjusted herself around the immensely satisfying cock. She softly batted her tail against Starlight's belly as she began to fuck her, her hooves scrambling up the walls to find better purchase as she pulled the shower curtain from the stand.

The curtain fell as she straightened herself out, but she didn't notice amidst the pounding she was receiving, Starlight growling like a carnal animal as she fucked her, the clanging against the floor a meaningless distraction amidst the immeasurable sensation that she was experiencing, the stiffness in her pussy stretching her as her walls cushioned it on the inside, hoping to squeeze some satisfaction from it and receiving it in the form of Starlight's increasingly fast breaths.

There was only one thing that was missing through all of this and now I needed it more than anything. "Did you put Trixie up like this just so she couldn't touch her clit?" I asked whenever I could get a word past a moan, and while Starlight said nothing she did do something really astonishing, something so hot that we've been repeating it ever since.

She took the shower head in her aura, putting it onto the max spray setting and pressing it against my clit as she fucked me, thrusting at a fervent speed as she wrapped the nozzle around my hind legs, binding me in place and marking me her territory, making me her own as the incessant jet stream of water gushed against my nub sending me closer to the edge, the cock repeatedly filled me as I wanted more and more for Starlight to finish inside me, and Starlight brushed her lips against my ear, whispering to me that she hoped I was enjoying my punishment...

I could feel it building up for a long time before release, and with each second that it drew closer I began to moan and shout louder and louder, and that only encouraged Starlight to pick up the pace, bringing herself to the edge as I came on her cock, emptying my juices all over her as she battered my pussy, her cock pulsating as she buried it as far as she could, a final, hard grunt signifying that she was about to cum, and I felt her shoot her load deep into my pussy, deeper than any stallion's cock could reach.

As a pair, we fell to the ground, her cock still inside me, but slightly more limp now. Looking at each other, we began to giggle as the shower's warm, relaxing, and reinvigorating water still washed over us, cleansing us, allowing us to become something fresh and new together. A smirk on my lips, I leaned over to Starlight, planting a small kiss on her lips, which she quickly reciprocated. "How's that for great and powerful?" I smirked, but I was lying. I didn't feel like the Great and Powerful Trixie right then, I felt like me, Trixie Lulamoon, a happy and satisfied mare.

"Hmm... Yeah, I suppose that was pretty spectacular," Starlight laughed, nuzzling Trixie's mane. "Still, you only got to go once, and you gave me two, that doesn't sound very equal to me. Want me to make it up to you?"

"You and fucking equality," Trixie smirked, rolling onto her back. "If you must, Trixie is willing to accommodate."

Thought you might be, Starlight laughed, picking up Trixie in her aura and planting her over her muzzle. Trixie realised what she was about to do and raised on her hind legs, looking back at her lover. "Uhh, Starlight? Remember you just emptied your load inside me. You sure you want to be doing that?"

"Yeah, I know," Starlight smirked, licking her lips. "I'm counting on it."

"Well, if you're sure," Trixie hummed, secretly immensely turned on by the idea. She began to absentmindedly paw at Starlight's cock, finding that it grew hard at her touch. "Heh, seriously, how are you still going?"

"It's magic," Starlight laughed, "It's pretty resilient. But the whole point of this was to even things out, so why don't you leave it aloneeee—ohfuck. You know what? Screw it, go to town."

"Trixie doesn't need to be told twice," Trixie chimed, leaning in and beginning to go to work as she lowered herself onto Starlight's waiting muzzle. As she licked and kissed and sucked at her friend, feeling Starlight lap up her mess, she decided that it didn't hurt for her to be a little great and powerful sometimes.