Mamamoo's Fuck-Fitness Course

Sex, is a messy activity. The grunting and exhalations, the sordid stench of sweat and hormones, the noisy slap of flesh, the taste of another person upon your tongue, the sticky fluids that invariably end up leaking everywhere... Sex was an exercise drenched in shared shamelessness, the thrill of ignoring your innate disgusts to focus solely upon the pursuit of pleasure; and of course, breeding. Which only made threesomes all the nastier. Now there was a third body squishing itself against the others, adding its own sensual heat to the mix, spicing the intercourse with its uneven dynamic that only ever encouraged more perversion. It was simply too easy to toss away your inhibitions and give in to the unnatural deviancy of the situation, spurring yourself as you seek your climax. Which, all in all, meant that you burned a lot more calories in a threesome, which was why the Mamamoo Workout Program always made sure its clients were paired with two of their ladies at once!

Fans would obviously plumb the depths of their reserves when with one of their idols, but with two of them... why, the weight would practically melt away!

It cost quite a bit to secure a session at the Mamamoo Fitness Center, but it was well known that the health benefits were worth every penny. There were only four open slots per day, and competition was fierce to obtain one, it was said that the ladies were fully booked for the year within minutes of opening; it was something of a miracle you had managed to secure yourself one. The modest office itself was tastefully decorated, pure white walls covered in informational posters and awards, and the plush chairs in the waiting room were of the highest quality. The assistants behind the front desk were equally as beautiful as the room itself, and went about their business with the quiet diligence of any medical office. A smiling secretary had given you a clipboard of forms and waivers to fill out, full of disclaimers carefully worded to avoid any explicit mention of what went on. The form had blandly informed you that your upcoming session would consist of a "personalized workout session", guided by two randomized members of Mamamoo, who would lead your "workout" until you had reached your "fitness goals". What it really meant of course, was that you would be vigorously fucked until you were on the edge of exhaustion.

The Mamamoo Workout experience had been carefully tuned to maximize the amount of calories burned during the intercourse. The controversial decision to randomize the members chosen had been done on purpose, since it had been noted that clients often burned as many calories with their least favorite member as they would have with their bias. One particularly celebrated patient had spent five hours rutting atop Wheein, and had managed to lose 20 pounds in the process. The eight hour long slots had also been chosen as the most optimal amount of time, past that and most patients were on the verge of death via excessive fluids loss. And of course, the decision to include two of the members instead of just one was to send their clients into a sexual frenzy; though it was also because the members enjoyed having sex with one another too much. On average, most patients lost around ten pounds over the several hours of intensive intercourse, their excess fat burning away as they pushed themselves to the limit to continue fucking half of Mamamoo. It was an extremely efficient method of losing weight, with the added benefit of being the best sex of your entire life.

The demure secretary returns to collect you, and your documents, checking to make sure everything had been filled out properly before guiding you to the front desk to record your temperature and weight. Nodding with satisfaction, she leads you out of the waiting room and through the doorway in the back, into a plain corridor adorned only with four brown doors. Colorful placards on the doors indicate whether the rooms were in use or not, and as you pass by the single occupied suite, you hear muffled squeals and moans emanating from it; evidently the sound-proofing here was high-quality. The assistant takes you to the room two doors down from the one currently in use, politely knocking on the door before opening it and motioning you inside. Your heart pounds and your palms grow sweaty as the reality of your situation hits you, you had been anticipating this for so long it had become almost mundane, but now that you were on the threshold... The secretary gives you an encouraging slap on the ass, and smiling kindly, assures you that you would be up for the grueling workout ahead of you; everyone gets cold feet before this! Mustering your courage, you return the favor, much to her amusement, before entering the "fitness room"; the door shuts, and locks, behind you.

Twin goddesses await you within, hands on their hips as they appraise their newest customer, their bodies sheathed in clinging tights that accentuated their plush lower lips, and sports bras that pushed out their chests. Solar seemed as bright as her namesake, cheerfully eyeing your crotch with open intent, while Hwasa glares thoughtfully at your face, her own sultry expression hinting of her love for vigorous copulation. Solar steps forward to greet you, her lithe body swaying as takes your hand and leads you further into the exercise room; which was severely lacking in conventional exercise equipment. The floor was completely covered in firm mats, with beanbags and exercise balls strewn about, there were several curiously-shaped benches, and the pull-up stand had a few too many straps than usual. Full-length mirrors covered the two sidewalls, while the furthest had various cabinets and a door that presumably led to the bathroom; and there was a tallyboard that marked the gender of every customer, it seems that women were here as often as men. Hwasa saunters up and takes your other hand, smirking slightly as she senses your nervousness, and you stammer as you introduce yourself to the two idols. The pair smile at your awkwardness, before explaining today's schedule to you once more; a mild stretching session, followed by a series of intensive workouts interspersed with breaks for hydration and restroom use, with a shower at the end to clean you all off.

Contrary to your assumptions, your time with Hwasa and Solar began with the utmost banality, the pair guiding you through some basic standing stretches before moving onto some sitting ones. If the police had burst into the room under suspicion of illegal sexual acts, they would have found a normal guy in sweats and a baggy tshirt, grunting as he strained to touch his toes, while two attractive fitness instructors watched with amusement. Now if said police returned half an hour later, well... The first sign that this was anything other than a regular weight-loss session was when Hwasa moved in front of you while your legs were spread, and smoothly slid her ass back between them. A position that left you quite conscious about the size of her posterior, now that it was nuzzling against your crotch, the pair's chests might have been similar, but Hwasa's rear was far thicker. A moment later Solar presses herself against your back, squishing her breasts against you as she slowly leans forward, stretching you out while ensuring you would be unable to escape. If Hwasa is at all troubled by the now obvious poking her cheeks, she does not show it, and placidly starts to grind against your loins; your penis obviously required stretching out as well. What started as slow teasing gradually turns into something more, as your excitement builds you find yourself moving as well, until what started as a suspicious stretch has degenerated into desperate dry-humping.

You groan as you rub yourself against Hwasa's thick ass, boldly grasping her waist so as to force her back against you all the harder, before long you are leaking through your sweatpants and onto her tights. She slowly hikes her ass up, and you eagerly follow, until it looks as if you were plowing her doggy-style, only with more clothes than usual on. Speaking of which, now that you have the room, you eagerly pull down your pants, and are surprised to discover your shirt getting yanked up as well, before Solar meshes herself against your back once more. Her hands roam your bare chest, toying with your nipples while she kisses and sucks your neck, whispering encouragement into your ear before nibbling up on it. You shudder as you hotdog Hwasa's plump butt, the fabric of her tights smooth enough to allow for easy movement, the sticky evidence of your virility smearing itself against it. With her amused face staring back at you in the mirror, the idol suddenly pulls forward, using her hand to press your cock downward before pushing back against you; and you find your cock sandwiched between her meaty thighs. Now it truly looked as if you were having sex, as you furiously fuck Hwasa's thighs, your crotch slapping loudly against her constrained ass as she squishes her legs together in imitation of her tight pussy.

With Solar pressing her supple body against you from behind, and with your cock buried between Hwasa's thighs, you feel your climax building unstoppably. The pair of idols were not blind to this, and they eagerly brought about its fruition. Solar smiles wickedly at you in the mirror, "Finishing so soon, dear?" she purrs, "we haven't even completed our stretches yet," before returning to giving your neck purple hickeys.
Hwasa simply looks back at you and commands, "Cum, now," and you moaningly obey, picking up the pace as she clenches around your manhood. You had not even lasted long enough to put your first load inside one of the members of Mamamoo, and it is with some embarrassment that you empty yourself against Hwasa's stomach. You groan as you paint her tummy with your seed, your cock fooled into thinking that it was draining itself inside of her fertile pussy, when instead your sperm was wasted upon her tanned skin. Shaking from the force of your orgasm, you lean on Hwasa for support as your strength pours from your dick, as the idols loudly praise your climax.

Solar pulls you upright onto your feet, murmuring encouragingly as she massages your crotch and thighs, while Hwasa idly cleans your semen off of her stomach with her fingers, licking each in turn while staring bemusedly at you. The girls share a glance before Hwasa gets up and stalks over to a cabinet, while Solar occupies you with kisses and touches, now that the warmup was finished, it was time to pick up the pace. And of course, the pair knew the best way to encourage their clients to do just that. Mamamoo, like most Third-Generation idols, may have looked on with contempt at the alchemical aphrodisiac brews churned out by Twice, but that did not mean they were opposed to all such potions. Hwasa removes an ornate, maroon-colored flask from a drawer, tossing it to Solar before sauntering back and shamelessly stripping in front of you. Your eyes boggle as you drink in the sight of Hwasa's naked body, her fertile curves framing a massively puffy pussy that is already slick with arousal; and her swaying breasts were practically begging to be groped. Meanwhile, Solar takes advantage of your distraction and chugs a portion of the bottle, licking her lips as the cherry-flavored drink pours into her stomach and its effects take hold.

Solar lets out a moan of pure pleasure as a bulge appears in her tights, spreading upwards until it nearly pushes fully from beneath the fabric. She shudders as she gingerly reveals the results of the potion, a girl-cock of average size, twitching and tender from its recent birth, with a pair of heavy balls throbbing in their hairless sack. Mamamoo know very well that to inspire a client, it is best to set the pace yourself, and let men's natural jealousies do the rest; plus, the women tend to be rather invigorated by having their favorite idol's cock in one or more of their holes. So Hwasa wastes no time in getting on her knees in front of Solar, and enthusiastically starting to suck her off. You are admittedly shocked by this sudden development, you had not expected for one of Mamamoo to sprout a cock, but you are not entirely opposed to this... To your own surprise, you find yourself oddly aroused by the scene taking place in front of you, and soon are shoving your own stiffening cock into Hwasa's face. The idol expertly gives oral to both of you, one hand on either cock, sucking one then the other, rubbing the tips together as her tongue lathers both with warm spit. You and Solar both moan from Hwasa's efforts, kissing and groping one another as your dicks are devoured, precum dribbling steadily all over her pert lips. After what seems like an age of endless pleasure, Hwasa smoothly rises before bending over, her face still bobbing in front of your crotches, but now offering an alternative.

You are too busy enjoying the stimulation of getting a blowjob from an idol like Hwasa, and so Solar is the first to take her pussy, slipping inside of her groupmate with practiced ease. While Solar has her sloppy way with Hwasa's lower lips, you use her upper lips with equal messiness, using her head's positioning to force your cock down her throat. Hwasa gags as you fuck her face like a pussy, slobber coating your balls with every thrust as you struggle to not unload your seed directly into her stomach. You and Solar hold hands and make-out while you spit-roast Hwasa, who squirms as both of you shove yourselves as deep as possible into her, united in your eagerness to use Hwasa's body. But before you can impregnate Hwasa's guts, Solar does just that inside of her friend's cunt, moaning loudly and spasming wildly as she empties herself into Hwasa, her eyes rolling back as pleasure washes through her body. Panting, her tongue still connected to yours be streamers of spit, Solar pulls out of Hwasa, slapping her thick ass in thanks before wiggling her eyebrows suggestively at you; now its your turn... Hwasa solidly plants herself against one of the wall mirrors in preparation for the pounding she was about to receive, looking back smugly at you as she spreads one cheek open in welcome. You shudder as you press your cockhead into the sticky mess leaking from Hwasa's plump pussy, your passage into her dripping hole made even easier by Solar's seed.

The cacophony of flesh slapping together reverberates through the exercise room as you violently take Hwasa against the wall. A surprising vigor fills you, turning every thrust into a hammer-blow as you break yourself against her massive ass-cheeks, your cock churning her pussy as Solar's seed pours out of it. Her sloppy cunt constricts tightly around your shaft with every thrust, gripping you tightly even while taking a ferocious pounding; idol pussy truly was superior. Hwasa growls hungrily as you plow her, licking the mirror lustfully to spur you on, her cunt gushing as she climaxes from the intensity of your coupling. With your hands around her hips, you hold her steady as you go into a frenzy, thrusting wildly as your own orgasm approaches, gasping her name with every breath while your balls throb with effort. Sweat is pouring down your skin when you finally let out a groan and force yourself deep inside of Hwasa, your semen erupting into her in a flood of jizz. Who looks back at you with satisfaction, licking her luscious lips while you plaster her pussy with your seed; relishing in every drop coating her insides. When you are finished, you stagger backwards, exhausted by your sex, and a laughing Solar passes you a water bottle as she guides you to the bathroom for a little break.

You were perplexed by your energetic coupling with Hwasa, you had not intended to be so rough with her, even though she had evidently enjoyed it, and you ponder this while you piss in one of the two toilets with Solar. Hwasa soon joins you two, squatting on the free seat and voiding her bladder as well; the pair of idol's did not need to ruminate on your sudden vigor, they knew exactly where it came from. Like most idols, Mamamoo knew full well that when fucking a cum-filled hole, men naturally grew more forceful and energetic, their bodies automatically adapting its rhythm to better scoop the semen out with its thrusts; which of course, burned more calories. So, the girls made sure to have as many holes filled with their own girlcocks and cum as soon as possible, not that it was very hard considering how good those holes were; and jealousy was a truly powerful motivator. Thus, when you three exit the bathroom, Hwasa almost immediately is laying down on padded bench, and opening her legs for Solar, who happily starts fucking your sloppy seconds out of Hwasa. You meanwhile rest on an exercise ball, idly rubbing your still slick yet flaccid cock, while the two idols make passionate love without you; a situation that makes you surprisingly aroused as you watch them fucking. Eventually, the squeals and moans are enough to get you hard once more, and you hasten to join the pair of idols once more, already knowing which hole you wanted to fill.

Solar starts with surprise when your hands grasp her waist, stopping mid-thrust to glance back at your touch, bemusement written on her features, "Oh, would you like a turn?" she asks with a knowing smile, before her eyebrows raise as you apply pressure to guide her down onto Hwasa, "Oh, wait, are you lubed up enough...?" Solar's question is answered as you press your glistening cock against her exposed asshole, and force yourself inside of her. Solar groans as she is impaled from behind, pushing herself deeply into Hwasa as you gradually fill her ass; until you are both balls-deep in your respective holes. Solar squirms as she is pleasured from both sides, her girl-cock getting massaged by Hwasa's sultry cunt, while your dick pokes at her innards; and you had not even started thrusting yet. Solar's guts probably had subtle differences compared to Hwasa's experienced pussy, but by now you were on your third load, and all your cock cared about was that it was inside of a warm hole; so it does what any dick inside of a warm hole would do, and starts moving. After an awkward start, all three of you eventually fall into a steady rhythm, allowing both you and Solar to get deep strokes in, while Hwasa simply lays there and takes it, naughtily urging you both on while you do all the work. Solar's perky butt meshes perfectly against your crotch with every thrust, and you have to contain yourself to not simply pin her against her groupmate and pound her soggy guts out of shape. Solar though, sounds like she is in heaven, gasping and moaning, becoming overstimulated and giving into her own pleasure, frantically humping away between Hwasa's thick thighs until she reaches her climax. When she pushes deep inside of her fellow idol, you follow suit, pressing yourself against her sweaty back as your weight presses Solar's girl-cock even further into Hwasa's pussy. Shuddering, Solar collapses onto her and unloads the contents of her balls into Hwasa, who groans as the warmth spreads through her belly, squished beneath both of your weight.

A glistening streamer of semen connects the tip of Solar's cock with the mess leaking out of Hwasa's cunt as she delicately maneuvers out from between you two; leaving you yet another sticky mess to unclog. But Hwasa has other ideas; obviously tired of being passive, instead she cranks the back of the bench upwards and seats you on it, sperm and sweat streaking down her thighs as she gazes down at you. She squats down in front of your upraised dick and takes it in her mouth, slobbering on your smelly meat until it is thoroughly doused in spittle, her eyebrows furrowed intensely as your tip stabs at her throat. Hwasa wears a seductive smirk when she finishes lubricating your manhood, rising back up to straddle you, placing one hand on your chest to hold you down, she uses the other to guide your cock inside of her as she sits on it. Your eyes widen in surprise when instead of slipping easily into her slimy cunt, Hwasa angles you a little further back, and forces your dick inside of her unused asshole. She lets out a satisfied grunt as she hilts you, your member twitching inside of her belly, her lips quirking upwards when she notices your expression, "What, did you think I disliked having my ass filled as well?", she brings a finger to your lips to hush you, "No, just shut up and let me enjoy myself." So you do, and she does, though it was not as if you were not savoring the feeling of Hwasa's tight anus sliding up and down your shaft as much as she was.

Hwasa's powerful thighs piston her up and down your length, a sneer of pleasure twisting her lips as your cock grinds against her insides, making you shudder with every squat. If anything, she looked smug at being able to exert some control once more, leaning down to forcefully kiss you on whim, her cunt leaking her juices steadily onto your belly. Moaning, you grope her swaying breasts as Hwasa rides you, holding onto them for support as her asshole clamps tightly around your cock. Only when you approach the edge of your orgasm does she pause, waiting until your dick finishes pulsing before resuming her sensual movements, her hips writhing atop your lap as she works you deep inside of her. After Hwasa has successfully edged you for a third time, Solar reappears behind her, no doubt painfully erect once more, running her hands down her friend's back to attract her attention. But Hwasa is teasingly aloof, "Sorry dear, this hole is already taken," she purrs, grinding meaningfully upon you for emphasis, curling her mouth into a haughty yet knowing smile. Solar simply beams though, and scoots herself onto the small open portion of the seat slipping her legs up yours until her cock and balls are squished against your own. Rolling her eyes, Hwasa stands up enough until only your head is inside of her, and you twist to try and see what is going on as you feel something hard pressing against the base of your tip. The pressure builds, and only when another rigid object surges in alongside your cock do you realize that Solar has forced her dick into the idol's ass as well. Hwasa lets out a true groan as she sits on both of your cocks, clenching tightly around both of your shafts as precum leaks out from the gaps between your cocks. With frightening flexibility, she lifts one leg up over you and turns, so that her side is now facing you, and you can see Solar smiling reassuringly from across Hwasa's swollen breasts; Hwasa's ass felt so snug with someone else in it...

With a hand on either shoulder, Hwasa bounces lustfully on both of your cocks, leaving both you and Solar moaning plaintively. Effectively pinned by each other's weigh, Hwasa has free reign to fuck you as she liked, turning what should have been in intense anal pounding into a languidly intimate ride. With your shafts squishing and slipping against one another, Hwasa's guts massage your dicks until they are the edge of bursting, then she pauses, allowing your precum to slop out over your congealed cockheads, before resuming her exquisite torture. All you and Solar can do is grab at her curvaceous body as it pumps up and and down your members, and your mind starts to melt under the unending pleasure. Hwasa's asshole makes disgusting squelching noises as precum slops out of it and onto your balls, soon your lower bodies are splattered with the evidence of your weakness. Even an experienced slut like Solar looks to be in heaven, her tongue lolling as she glares lustfully back at you, grinding herself against you in her desperation to climax. You start asking for it, pleading with Hwasa for release, which of course only makes her leak all the more, until eventually she lets out a grunt a paints the matting with a wash of gooey squirt, shuddering with ecstasy as her asshole clamps tightly around your members. Her face flushed with arousal, her hands slip onto your throats as she snarls, "Beg for it! Beg. For. It!" and with your brains sloshing with hormones, you and Solar easily comply. You beg for release as Hwasa slams herself against you, her thick ass cheeks slapping loudly as fluids spray, the two of you now humping wildly upwards while Hwasa hammers you flat again and again. Solar is the first to finish, moaning sweetly, her eyes roll back as she fills Hwasa's guts, her pulsating cock slobbering cum all over your dick as much as her coils. The stimulation is enough to make you explode soon after, drowning Hwasa's innards in semen as she squirts messily once more as her ass gets turned into a jizz-filled slurry.

Hwasa unmounts you both with a groan, Solar nearly toppling backwards off the seat as all three of you are weak and trembling from your intensive exertions. Hwasa gingerly kneels next to you, and without hesitation starts cleaning off the filthy mess coating your sensitive cocks with her mouth. Now you are truly writhing in the seat, your skin painfully stuck to the black leather by sweat, clutching her hair as her warm saliva is slathered all over your manhood. Hwasa skillfully rubs your tips together, her tongue slipping between and around them, before taking you both in her mouth, trying to fit both of your cocks into her throat and sometimes succeeding. By the end of it, both you and Solar are gasping, but your cocks are both bulging once more. Hwasa stands back up before sashaying to an uncluttered area of mat and bending over, spreading her cheeks for your enjoyment. She smirks coyly as her asshole belches a ream of semen down her leg, her gaping pussy still awash with sperms, "Who is getting which hole?", she asks, her smile growing wider, "Or are you going to share again...?" Hwasa seductively licks her lips as Solar untangles herself from you and staggers over, with you a step behind, wiggling her butt enticingly as you approach.
Solar glances at you and gives you a kiss, before grinning, "Well? We have five hours left, so take your pick, or do you want me...?"

The next four hours pass in a blur of pounding flesh and spewing fluids, an unending tide of hedonism that sees you plumbing the depths of your depravity. You violate Hwasa's asshole, you plow her pussy, you fill her throat, while Solar gleefully does the same. You balls slap together in an endless cacophony, and more often than not your shafts slip and squelch against each other as you both ravage the same hole at once. Not that Solar's orifices are spared either, pumping away at her butt while Hwasa pleasures you both, or forces you to pleasure her; and Solar's face is almost as covered with both her cum and your own as Hwasa's is. All of you guzzle down vast amounts of water, only stopping when your bodies can take it no more and you have to make a break to the bathroom, often returning to find the other two fucking as intensely as before. Sweat pours down your skin like a waterfall, and the mats are covered with puddles of sexual fluids (and the occasional pond of piss from when someone was unable to reach the toilet in time), it feels like your brain has devolved until your only thoughts are for slaking your desires upon the two idols of Mamamoo. Eventually though, your exhaustion catches up to you, and when you pull out of Hwasa's sloppy cunt for what seems like the hundredth time that day you find yourself collapsing from utter fatigue.

Hwasa and Solar carefully tend to you over the next twenty minutes, pouring fluids down your throat to rehydrate you and massaging your cramped and aching muscles. When they are satisfied you can walk, they haul you to your feet, chattering amiably and complimenting you on your love-making skills; of course they barely showed even a hint of tiredness. They haul you into the bathroom, where they crudely hose the worst of the filth off of you with a shower head before frog-marching you to the exit. A smiling assistant greets you at the door, and your half of Mamamoo wave you goodbye as she leads you out, covered head to toe in cum, squirt, and other unmentionable fluids. As the girl leads you down the corridor, you idly notice that the idols had stuffed you back into your clothes, though you knew you must absolutely reek. The other occupied door cracks open as you approach, and a lady staggers out of it, her belly distended and her holes leaking so much cum it is slicking through her yoga pants in a reeking stream. She barely even glances at you as you are dragged by her, though through the closing door you notice a rather well-endowed Moonbyul and Wheein blowing kisses to their retreating client. Humming cheerfully, the assistant takes your weight at the scale, before depositing you in front of the kindly secretary from before. Who beams knowingly, before slyly enquiring if you would like to make an appointment for next year? Nodding tiredly, you flick through your calendar to look up the date, while the lady behind you noisily vomits what sounds like gallons of semen into a trashcan.

Of course you would like to make another appointment, though you are sure to ask if there have been any last minute cancellations... Another few more sessions like this, and you would be hitting your weight-loss target in no time!