A/N: It's an mpreg birth story, requested by someone. Refrain from reading if you are not into it or it's too graphic for you. Characters, places, and stories are all imaginary.
Junho was never supposed to be this big.
At 5'6", barely 120 pounds pre-pregnancy, he had always been lean, delicate, and fast on his feet. He looked like a toy next to Leon â the 6'5" beast of a man who had been born to lift mountains. Their relationship had always drawn attention online: âThe Shaker and the Dumbbell.â But once Junho got pregnant, everything changed.
Their competitiveness twisted into something more â an obsession with growth, size, and pushing limits.
Junho didnât just eat. He trained. He wasnât just going to carry this baby. He was going to carry the biggest, heaviest, most glorious pregnancy ever livestreamed â and Leon, his husband, would make sure of it.
Leon wanted his baby â and Junhoâs belly â to be massive.
And Junho? Deep down, he wanted to see how far he could stretch.
Their bedroom was dim, lit by a single lamp. Junho stood in front of the mirror, both hands running down the slight swell that had appeared over his waistband. His fingers pressed gently, exploring the firmness beneath the surface.
Leon came up behind him, towering like always. He placed his palms over Junhoâs, then slowly moved his hands lower, cradling the subtle curve.
âStarting to show,â he murmured.
Junhoâs breath hitched. âYou think so?â
Leon nodded, lips brushing his temple. âI know so.â
That night, Junho recorded his first pregnancy mukbang.
He sat in front of the low table wearing a hoodie cropped just above his belly button, thighs bare, briefs tight. The camera zoomed in on the foodâfour bowls of noodles, two large fried chicken platters, kimchi, rice cakes, and eggs.
âTodayâs menu is comfort food,â he said, smiling.
The first bite was easy. The second, warm. By the tenth, he was already slowing.
âNghhh⌠wow⌠this hits different when thereâs a baby inside,â he mumbled, rubbing slow circles on his belly. âHeâs fighting for room with the dumplingsâŚâ
Leon watched silently behind the camera, arms crossed, erection visible in his gym shorts.
âKeep going,â he said quietly.
Junho swallowed hard. âY-yeah⌠just⌠need to breatheâŚâ
His cheeks were flushed, his forehead slightly sweaty. As he ate, he shifted in place, adjusting to the growing tension in his belly.
The gym session began at 9 a.m. sharp.
Junho arrived in a loose tee and maternity stretch shorts that hugged his softening thighs. The gym was privateâjust for them. Leon was already there, shirtless, guiding Junho to the center mat.
âWarm-up: hip rolls. Ten reps each side.â
Junho groaned, placing both hands on his hips and beginning to move.
With each circle, his belly curved outward slightly, tugging at the thin fabric of his shirt.
âUnnnghh⌠god, I feel it pulling alreadyâŚâ
âGood,â Leon said. âLet it stretch. Make space.â
Junho lowered himself slowly, hands gripping Leonâs shoulders for balance.
âLower,â Leon instructed.
âI am low!â Junho hissed.
âDeeper. Hold for twenty seconds.â
His thighs trembled. Belly compressed against his legs. Sweat beaded on his neck.
âHHHNNNNNGHHHâFUCKâmy hips are gonna snapâ!â
Leon slid behind him, arms wrapping around his waist to support the belly.
âYou want this baby big, right?â
âY-yeahânnnghhhâbut heâs already so heavy!â
âThen stretch wider.â
Junho let out a strained whimper, tears dotting the corners of his eyes as he held the position until his knees gave out.
The mukbang was titled: 12 Weeks In: Double Meat Day.
Junho sat with his legs apart, shirt fully off this time. His bellyâstill modest, but undeniably firmârested low against his lap.
He picked up a slice of pork belly, chewed slowly, then sighed.
âMmmmph⌠nnnghh⌠heâs pressing against my stomach alreadyâŚâ
Halfway through the meal, he stopped.
Leon leaned over from the side, brushing Junhoâs sweaty bangs aside.
âYouâre slowing down.â
Junho exhaled hard. âIâm full already⌠itâs tight todayâŚâ
Leon looked down. âThatâs not tight. You can go tighter.â
âI donât wanna tear somethingâŚâ
Leon smirked. âThatâs what trainingâs for.â
Junho whimpered, reached for another bite, then hissed as a sharp kick hit his ribs.
âAhhâfucker kicked me for trying!â
Leon laughed. âThatâs your son demanding more.â
Junho rolled his eyesâbut ate.
âLetâs start with deep lunges,â Leon said.
Junho got into position, face flushed.
âAAAAHHHâfuckfuckfuckâitâs pulling againââ
âI am! I think heâs dragging my spine down with him!â
Leon moved behind him, hands firm on Junhoâs hips, guiding him deeper.
The stretch was agonizing.
Junho panted, arms trembling as he held the pose.
âJust breathe. Youâre making space for a big baby.â
Junho whimpered, sweat running down his back. âHeâs gonna wreck meâŚâ
Week 15â16: Routine Solidified
Each day looked the sameâand yet harder.
Morning: Belly rubs in bed. Junho waking with a grunt, hands immediately on his swollen abdomen.
âOof⌠ughhhâhe shifted againâI canât sit up without rolling sideways nowâŚâ
Leon would kiss his belly, then lift him.
Workout: Stair stepping. Junho dragged his legs up the stairmaster, belly strapped tight with a support band.
âFive more flights,â Leon said.
âNNGHâHeâs dragging my center downâI can feel my hole pulsing!â
Leon didnât blink. âThen keep moving.â
Midday Mukbang: 4,000+ calories. By this point, Junho ate slowly, breathing hard.
âGuys, heâs growing way faster than we thoughtâŚâ
He leaned back, both hands cradling his stomach as it gurgled.
Leon entered the frame, held a spoon to Junhoâs lips.
âYou still have another tray.â
Junho moaned, âMmmfffâooohhhâs-stopâheâs punching for roomâŚâ
Evening Stretch: Childâs pose. Leon pushed gently on Junhoâs lower back.
Junho groaned. âCanât⌠feel like heâs right between my hips nowâŚâ
Week 17â20: Belly Breakthrough
Junho shuffled into the kitchen late in the morning, his loose cotton tank top riding up halfway up his bump. It had popped now, unmistakable, taut and heavy across his middle.
He groaned as he leaned against the counter, both hands bracing his back.
âLeon⌠hhhnghh⌠heâs heavier today.â
Leon came up from behind, pulling Junho into a slow backbend, stretching the front of his body as his belly pushed forward.
âYouâre holding him lower,â Leon said, kissing the side of Junhoâs neck. âMeans heâs growing fast.â
The breakfast workout began thereâslow lunges in the hallway, arms out, each step making Junhoâs belly bounce softly.
âOw-ow-owânnghhhâLeon, my hips feel loose already⌠like theyâre⌠coming apartâŚâ
âPerfect,â Leon murmured, guiding him into a stretch. âWe need them wide.â
Afterward, Junho lay flat on the mat, trying to catch his breath as Leon rubbed oil over his belly.
It quivered with every movement.
âUuugh, he keeps squirming right under my belly buttonâŚâ Junho moaned, hands gripping the mat.
Then came the mukbang. A seafood feastâsquid, grilled eel, creamy pasta, four kinds of rolls.
Junho lowered himself onto the floor with a whimper.
âEverything presses when I sit now. I feel like the foodâs already touching his feetâŚâ
Leon adjusted the table. âWeâll add a cushion under you. Youâre not stopping.â
Junho ate, breathing hard between bites, pausing to grip the edge of the table when a kick made him twitch.
âOofâahhhâheâs punching my ribs while I eatâŚâ
âHeâs making room. You do the same.â
Week 21â24: Too Much, Too Fast
Junho, dressed in a soft crop and maternity leggings, leaned forward as he slowly climbed each step, the weight of his baby dragging him down.
âUnnnghhh⌠fuck⌠f-feels like Iâm lifting a boulder in my gutââ
Leon trailed behind, one hand at Junhoâs back.
By the fifth flight, Junho had tears in his eyes.
âI c-canât⌠the babyâs sliding down when I lift my kneesâheâs pounding my pelvisâŚâ
âYou wanted hips wide enough for him. Donât quit now.â
They reached the top. Junho collapsed onto the floor, both hands over his bump, gasping.
âI feel like Iâm gonna crack open⌠Heâs gonna fall out if I sneeze.â
Leon kissed his temple. âNot yet. Thatâs just his weight preparing you.â
Later that day, Junho groaned through squats. His thighs shook violently, belly pressing down into his legs. He barely finished the reps.
During the mukbang, he was already contracting lightly.
âOooohhhânnnghhâmy back⌠my backâs spasmingâLeon, heâs so low todayââ
Leon sat behind him during the stream, massaging Junhoâs sides as he kept chewing.
âKeep going. He needs to feel youâre ready to take him.â
Week 25â28: The Edge of Breath
Junhoâs belly was massive now.
He no longer stood up on his own. Leon lifted him each morning from bed, supporting under the belly as Junho let out ragged groans.
âNnnnghhâh-he shifts the second I moveâLeonâhe drags down on my insidesââ
âMeans heâs dropping. Youâre almost at prime stretch.â
The morning stretch began with him on all fours, belly swinging low.
Junho rocked his hips back slowly, gasping as the baby shifted deeper into his pelvis.
âAHHHâAHHânnnghâf-fuck heâs jamming into my tailbone!â
Leon watched, expression intense.
âLet him open you from the inside. You need every inch.â
Then came wall squats, Leon bracing Junho from behind as he lowered down.
âI-it hurtsâLeonâmy thighs canât handle the weightâ!â
âIâll hold you. Go deeper.â
By lunchtime, Junho was already groaning from pressure.
The mukbang was curry-based. Rich, heavy. He leaned forward, belly resting on a warm towel, already full.
âI donât know if I can⌠heâs already pushing upâevery bite feels like Iâm punching my own lungsââ
âThen breathe through it. Push the food down past him.â
He ate. He wept. He moaned.
Week 29â32: Waddle and Wreck
Junho stood at the bottom of the staircase, one hand braced against the railing, the other under his belly, holding it up like a massive water balloon ready to burst.
His bare feet were already trembling. He exhaled hard, eyes fluttering shut.
âUnnnghh⌠L-LeonâŚâ he whimpered. âMy thighs are locking up just from standing hereâŚâ
âYou havenât even taken a step, baby,â Leon said softly from behind. âJust start with your left foot.â
Junho groaned, shifting his weight awkwardly. The belly swayed, low and tense, the sheer pull of gravity dragging his posture down into a heavy waddle.
His left foot lifted. Just that motion made his breath catch.
âAhânnnhhh! Oh fuckâhe shifted againâheâs jamming right into my hips, Leonâ!â
âKeep going. Let him stretch you.â
Junho leaned his body forward, one palm flattening hard against the wall. His belly bumped the step as he climbed.
âOooh godângghhâfeels like heâs gonna CROWN just from walkingâŚâ
âYou want to be open when it starts. Every stair counts.â
Second stair. Junhoâs knees buckled, his jaw clenched.
âH-hnnnghhâbabyâs sliding down againâLeon, I think Iâm leakingââ
Leon stepped in behind him, catching the underside of the belly.
âYouâre not. Thatâs just your body relaxing. Keep moving.â
Junho sobbed. âNngghh⌠f-fuck my pelvis is on fireâI canât lift anymoreâI canât!â
âYou can. Three more stairs.â
The third stair was worse. Junho paused halfway up, body folded forward over the railing, panting like he was in early labor.
âNGHHHHâLeonâh-heâs grinding my hole from the insideâI can feel his skull rubbing my bonesâ!â
Leon pressed a hand to the small of his back. âExactly what we want. One more.â
Junho screamedâhalf-growl, half-desperationâas he threw his leg up for the final step. His whole body shook as he reached the landing.
He collapsed into Leonâs arms, wheezing.
âY-you f-fucking sadistây-you love watching me fall apart like thisâŚâ
Leon only smiled and kissed his temple. âI love watching you get ready.â
Junho waddled. Every step was wide-legged, arms out, body leaning to one side to compensate.
He stopped walking without support. Leon guided him from behind, hand under the belly, whispering instructions.
âThatâs it⌠heel first. Keep your knees open.â
âNnnghhhâI canâtâheâs dragging against my cervixâI-I feel him pressing against my holeââ
âThatâs perfect. Youâre building your opening now.â
Squats happened every two hours.
Sometimes Junho cried before even starting.
âF-fuck⌠LeonâI donât wanna do thisâmy thighs are burningââ
âWeâre not stopping now.â
Junho screamed through reps, collapsing into Leonâs arms after each one, belly pulsing with tight Braxton Hicks.
Mukbangs became a test of pain tolerance.
He sweated constantly. Struggled to keep food down. The baby squirmed violently.
âIâI feel him twisting while I swallowâheâs kicking my stomach while Iâm eatingâ!â
Leon helped him pace between bites. Junho chewed with tears in his eyes, belly jumping visibly as the baby moved.
âYouâre feeding him to stretch your insides more. Donât stop.â
Week 33â36: Painful Perfection
Junho whimpered from the couch, one arm flopped over his mountain of a belly. His shorts were damp with sweat and the dark patch of early leaking.
âI just sat downâŚâ he muttered, eyes glassy.
Leon crouched in front of him, gently stroking his knees.
âTwo hours. Come on. Letâs squat him lower.â
Junho groaned and used Leonâs arms to hoist himself up. The weight of the belly made his body fold instantlyâhe was practically bent over with the burden.
âFuckfuckfuckâhhhhhhnnnggghhhhâmy thighs are screaming, Leonâ!â
Leon placed his palms on Junhoâs hips, guiding them down.
âGo slow. Feel the pressure. Let him press down.â
Junho widened his stance. His knees buckled as his hole twitched involuntarily.
âAAAAHHHâs-somethingâs pushingâI can feel my insides stretchâheâs pressing into my pelvic floorâ!â
âExactly. Let it happen.â
Junho bent further, the squat deepening. The belly dropped between his thighs, resting heavy, taut and angry. His breath hitched.
âOh godâoh fuckâLeon heâs pulsing against my holeâI canât hold itânnnngghh!â
âYou will hold it. Let him mold the shape of the canal.â
Junho sobbed, legs shaking uncontrollably. A sharp pain twisted through his left hip.
âAHH! My jointâL-Leon I canâtâitâs burning like fireâI think I tore somethingâ!â
Leon slid an arm under his belly and pulled him up slowly.
âYou held it for forty seconds. Thatâs longer than yesterday. Youâre almost there.â
Junho collapsed on the mat, moaning, tears streaking down his flushed cheeks.
He reached down between his legs, groaning in panic.
âH-heâs so LOWâI can feel my hole stretch open just from that squatâI feel like Iâm going to start pushing if I move wrongâŚâ
Leon kneeled beside him, hand flat on Junhoâs belly, voice calm.
âYouâre stretching beautifully. Just let the ache work through you. Every squat is shaping your body to take him.â
âIâm gonna fall apart before he even crownsâŚâ
âYouâll fall apart during,â Leon whispered. âThatâs the plan.â
Every part of Junhoâs body hurt.
His belly sagged. His thighs trembled. His hole throbbed constantly.
Stretching became cruel. Deep lunges turned to sobbing sessions. Childâs pose made his lower back snap audibly as Leon pushed gently into it.
âHHHHNNNNNGGGHHâSTOPâLeonâheâs gonna pop outâ!â
âYouâre just loosening up.â
Each night he was packed into bed with three pillows, groaning.
âH-heâs pounding down every time I breatheâLeonâheâs wrenching me open with his feetâŚâ
âLet him. Heâs stretching your birth canal for himself.â
Even during mukbangs, Junho openly moaned now.
âAhhhâahhhâfuckâheâs rolling mid-biteâLeon I canâtâI feel like Iâm gonna ripââ
Junho chewed with tears in his eyes, belly visibly rippling with movement.
Week 37â39: The Breaking Point
Junho stood barefoot on the mat, sweat clinging to every inch of his pale skin. His belly hung low in front of him like a loaded sack, the weight of the baby and food making his center of gravity staggeringly low. His legs trembled as he lowered into a squat, hands behind his head, tank top pulled up to keep it from clinging.
âFffuckâŚâ he hissed through clenched teeth, eyes squeezed shut. His thighs quivered.
Leon stood behind him like a personal trainer from hell. âLower.â
âI c-canâtâ nghhhâ heâs pressing on everythingââ
âYou want to push this baby out clean or not?â
Junho let out a choked groan, teeth baring. âNnnnnngghhhâAHHâ!â
He dropped lower, belly nearly brushing the mat, then collapsed to his knees panting. Leon knelt behind him, massaging his hips.
âNoâoh godââ Junho gasped, one hand gripping Leonâs forearm. âItâsâhurtsâheâs pushing on my spineâŚâ
âYou need to widen those hips. This baby is coming through you like a freight train.â
Junho whimpered and slowly stood again. His posture sagged forward â the weight of his belly made him lean, swaybacked. As he squatted again, tears stung his eyes.
He groaned through each rep.
âNghh⌠nghh⌠ngghhhâfuckâh-heâs movingââ
âGood. Thatâs pressure training.â
Junho no longer spoke much.
He groaned his way through the day.
Every movement felt like it would trigger labor. Leon stopped him from walking alone.
âAHHHHHHânnnnhâheâs so lowâLeon I swear heâs comingâ!â
âYouâre not there yet. Just hold him a little longer.â
Junho rocked through every Braxton Hicks contraction, sometimes on the ball, sometimes on Leonâs lap, belly pulsing.
The final mukbangs became legendary. Junho ate shirtless, belly glistening, half crying between bites.
âI canât even think⌠heâs slamming my cervix while I chewâŚâ
âYouâre almost ready.â
Because he wanted the world to see how far heâd stretched.
And what kind of pain it took to grow something that big.