Chapter Text
Basically, before we start, you gotta understand I made this image and it did a lot of brain poisoning to me:
Anyways,
Distant footsteps echoed down the hallway into Sky’s warm and spacious bedroom. Her room was plastered with posters of various webcomics, animes and her favourite fast food restaurants. On theme with this, her floor was littered with cheese-stained burger wrappers, and loose, half-drunken milkshake cups, the relics of previous pig-outs. Pushed against the wall was a queen sized bed entirely covered in plushies, pillows, and blankets, and laid back in the middle was Sky herself, dressed in a loosely-fitting skunk onesie. Her cute little belly button peeked through the tattered, stained fabric. Somehow, despite the thick fluffiness of her attire, sweat-stains accrued under her pits, petite boobs, and heavy-set butt. She cutely nodded along to the beats in her cheesy j-pop playlist, lost in her own little world. However, the sound of footsteps grew and grew down the corridor, and as the door swung open, their source revealed herself.
“Heyyyyyyyyyyyyy sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis sis guess whaaaaaaaatttt~? :3” Mira chirped at breakneck speed, little crumbs of food flecking out from her moe-fanged mouth. Her chubby frame protested against her scrappy “FART LOADING” crop-top and adorable, shart-soaked shimapan, threatening to burst at the seams. As she leant down to her sister, she giggled, watching intently as Sky’s eyeline obviously drew to her wobbly, fatty boobs, peppered with shiny beads of sweat.
“>w> w-what?” Sky sheepishly replied, somewhat already predicting exactly wha–
BPFRHBFRhbrfhbrhbrbhbhfrfhrbhfRRFRFRRRPrfprftt…
…exactly what her sister had in mind. With a sloppy, cheekwobbling fart, the room was instantaneously filled with a rotten, vegetal stench. Stomach-turningly earthy, and seeming to cling to the nostrils, the 8-second long blast raised the humidity of the room to a tropic degree, spraying buttsweat through her stained, striped panties.
Sky let out a high-pitched squeak, her eyes wide as her sister’s nauseating fart permeated the already vaguely gross air of her lil bedroom. She froze, blushing a deep pink, before her sleeve-covered hands stimmed, a cute lil reflex to Mira’s sensory assault. Her nose scrunched up as she kicked her legs, and faux-protested :3c
“E-eep! >_< T-that’s so icky, Mira… m-my room smells all veggie-ish now… u-um, I can’t even handle those yucky foods on a plate… let alone coming from your b-big… um, squishy butt~ :3c”
A sickly-sweet, smug smirk spread slowly across Mira’s pretty face, as she closed the door behind her, locking the two girls together in the stuffy, cozy room. “Ehehehe… whaaaat’s the matter, huh~? :3c Can’t handle a little chilli-egg combo~? Served with roasted onion~? :3 and a side bowl of thick, spicy curry~? Cmoooon, sis, gotta grow up your palette sometime~ :3c”, her voice clinging and sardonic.
“U-um, if your tummy makes those… t-those stinky veggie blasts, I-I’ll just stick to my burgers, please… >_<” Sky pouted, picking up a milkshake of indeterminate used-by-date, taking some sheepish sips to de-escalate her own racing heart. “M-meaniebutt… why’d you have to let it rip in my room~? >w<”
“You think you wouldn't’ve smelled it if I ripped that one from across the house?”
“...Hmpf. Touché….” Sky was still pretending to throw a tantrum, but her occasional peeks at her sister’s wide form gave away her true feelings.
“A-and plus, I wanna show my bestie how gross my butt is >:3c! My butt put in a lotta hard work,,, …cuz it loves you and stuff :3 So… s-stop being such a tsundere, dork, I know you like it >w<”
Sky stammered a little, taken aback at how adorable her sister was being… before resigning, and patting the available bedspace beside her.
“O-okay fiiiine… >w< S-since you’re here, m-maybe you can stay and hang out… i guess :3 sit down here…” She patted the empty bed space beside her. “I, um, kinda gotta secret to tell you~ :3c”
Instead of following her basic instructions, Mira excitedly jumped forwards and glomped Sky, making her bedsprings groan in agony. She buried her face into the fluffy texture of her onesie, taking deep huffs of the never-washed girlstink, giggling in pleasure. “Whaaaaat’s ur secret huh~? :3”
Sky nervously looked to the side, before whispering in a cute, gentle voice, “uhm… well >_<... my secret is that, my, um, um…” She leant in, and whispered directly into her sister’s ear.
“M-my butt wuvs you too~!!!! >w<”
BRFFRRFWWWNNNFRFPPTT~!!!!
The sound was thick, brassy, impossibly deep and bubbly, muffled by the thick fabric and her mattress, which rumbled from the pure vibrational power of her ass~ :3. Sky squeed, and stimmed as the distinct stench of processed beef and american cheese rose slowly from beneath her greasy thighs. The powerful, nauseating complexities of Mira’s fart were overpowered by the sheer potency of her unwiped bubbleguts buttsmog. It was the fart equivalent of opening a hot oven, and being hit with the wall of heat.
“Ehehehehehe… s-sorry sis,, i-i had to toot :3c”
Mira’s pupils effectively became heart-shaped as the miasma hit her lungs. She stifled a desperate moan against her sister’s tummy, letting the grease-soaked buttfumes fill her lungs. “Bbwweh,,, goddddd~ Your fat ass smells like a warm dumpster outside of a taco bell… :3c it’s soooo fucking hot~”
Sky stuck her tongue out teasingly. “It’s not my fault stuff that isn’t junk food tastes icky… and that showering overstims me… a-and i dont like the texture of toilet paper… xP… but it does have its perks :3c... ,like making my cute sister hang out in my room all the time~”
Mira nodded and “mhm”’d along, listening to every word as she slowly pitched a tent in her panties, imagining just how swampy her sister’s fat slab of jiggly, gaspacked wobblemeat was under that onesie. “Y’know… washing down that meal with a jug of spoiled milk sorta did a number on my butt~ I totes have moar farts if you want me to hang out in ur room some more~”
Sky nodded eagerly, blushing with excitement :>. Seeing this confirmation, Mira stood up, wiggling her wide butt tantalisingly, letting Sky take a closer look. She leaned in, and gasped dramatically, noticing the thick, sludgy stains, with an especially prominent one directly over her puckering buttho-
SQQQLLCCHFRHBFRHBFRHRFBBLRRT~
Maybe having her mouth agape wasn’t the smartest idea behind Mira’s unwashed skunkbutt. Oily buttsweat speckled Sky’s tongue, airborne due to the force of her sloppy, humid brap. It was like someone had poured garbage juice into a diffuser. Taking such a concentrated mix of rotten eggs and spoiled onions point-blank was overwhelming enough, but it being blasted into her throat sent her lil heart into overdrive~! She grabbed her sisters hips, and pulled her fat butt in close for a big, sloppy, sweet kiss, pulling away and leaving a bridge of (mostly) spit~ :3
Mira felt a rush of pure lust flood her system, both in a state of full-body relief after her huge, sloppy brap, and from the sudden forwardness from her otherwise reserved sister~!
“Awwww, can’t help but press ur pretty face in 2 my butt, huuuh~? Whatcha doing that for, pervert >;3~?”
“I'm… im saying i wuv your big smelly butt right back~ >w<” She looked up and gave a cute little toothy smile :3
It was like Mira had been struck by lightning. Nothing could’ve been a more calculated cuteness overdose right to her heart, making her stumble back and land on the soft pile of greasy burger wrappers.
“Ufufufufufu… gotcha sis~ x3c nobody can resist my moe charm >w<” Sky mocked, holding a sleeve up to her mouth as she gave a princesslike giggle. “U-um,, could you,, maybe c-come closer and … >w< lick ur own fartsludge off mai tongue~? :3”
She laid back again, lounging in an adorable pose. Her somewhat regal aura was neutered by a distinct GRGMbbBLll…, the sound of her tummy warring with her last milkshake sip, making her giggly again.
Mira rose, and once again laid her body weight on her sister, but this time planting her face right next to her sisters’~. She took a moment to stare into those soft, dark eyes, to feel her chest rising and falling with lustful tension, to feel her warm, panting breath against her face… before she pressed her soft, plump lips deep against Sky’s. The taste of rotten malted vanilla grew across her tongue, making her eyes flutter, and her knees weak. All of a sudden, Sky wrapped her arms around Mira’s torso, and pulled her in tight~!!!
bbbwwUUURRRRPPGghhhh…
Sky’s eggy, raunchy belch filled Mira’s mouth, clinging to the walls of her throat. The pure stench was enough to tip her already horny mind over the edge~ She couldn’t help but grind against her phat thighs, as Sky drew away from the kiss, giggling as the spitbridge stretched between them.
“Ehehehe… d-did that taste alright, sis?~ >w<”
“Gghh.. r-reallyreally gross <3 but, not like ur usual gross… >:3c did you fiiinally try a vegetable huuuh~?”
“E-eep,,, nup :3, t-those were your smelly fumes, silly~ :3c I-I just burped them back… um, s-so it’s like you, uh, kissed your own butt~ I-I just wanted to share a little~ :3c”
“Nnghhh,, that’s so hawt >w<.. I see why you can’t get enough of it then >:3”
Mira moved slowly from Sky’s cheek, to her neck, eliciting cute lil gaspy moans. She kept moving down, until she was kissing just above her breasts. Reaching up with one hand, she slowly unzipped the front of the onesie, exposing her soft, jiggly, sweaty breasts. The coagulated goonsweat between her boobs gave some resistance to spreading them, but Mira managed to pry them apart, huffing the years of layered girlstench. Sky moaned and twitched, feeling her sister’s tongue against her sensitive nipples. As the zipper travelled further down her squirming body, a powerful, earthy, sewage-leak smell mixed in with the already fetid air.
“E-eww.. :3” Sky cutely feigned disgusting, wafting the air with her sleeve. “U-um… y’know… my onesie’s, like, n-never really been aired out… sooo, ur probably smelling the gradual buildup of my farts,, over a loooong time :3”
Mira grabbed her sister’s waist and started planting rapid, passionate kisses across her midriff, even tonguekissing her sweaty navel. Sky’s moans and gasps grew sharper with each kiss, the pressure shifting the volatile burgerfarts trapped in her guts. A particularly dangerous sounding grrmMMmbbllll… made Mira flinch a little, before desperately looking up into her sister’s eyes, like a dog begging at a dinner table.
“Kinda looks like you, um, wanna give my silly lil butt a kissie :3 :3c I-I think it likes you too~” Sky purred.
She eagerly grabbed her favourite plushie and flipped over onto her tummy, pointing her butt up at Mira. Even through the fluffy pyjamas, her butt wobbled like a freshly baked castella cake. Just turning over intensified the raw stench oozing from her very presence, seeping through the onesie into the humid air.
Mira eagerly pressed her face deep into the soft, fuzzy butt, and started giving it deep, passionate kisses. Each time she pressed her face in, more lingering stench would be freed from the disturbed fibres, not washed in years. The smell of unwashed ass made her tongue hang out and her eyes roll up in orgasmic bliss. Still, she craved getting even more intimate than this~ She started to unzip the butt flap slowly, her mind racing…
W-what kind of panties does she wear??? >w< I bet they’re super pretty… or rlly cute… and I bet she hasn't changed them in years,,, and.. and…
The flap fell down, revealing…
Her huge, wide, wobbly, unwiped, unshowered, filthy fartprincess butt, totally bare.
“>_< I did mention panties when it came to things that feel just like… texture icky, riiight?... my butt’s too precious for that >:3c” she mumbled shyly, wiggling her bratty brapwagon with a nervous giggle. “N-now hurry up already owo~ I-I like, really gotta,, nghh,, f-fart~ :3c”
As Mira gingerly spread her sister’s greasy cheeks, the residual swampass strung out between them, like an extra-stretchy cheese pull of ass mucus. Mira buried her face in, aligning her lips with Sky’s puffy, soft, smelly donut~ Moaning into her sister’s butthole, she begged.
“Fuckfuckfuckfuckfuck please sis… B-Blast your sloppy, bubbly, greasy junk-food braps down my throat~ >w< 💖”
Sky giggled softly, before closing one eye in concentration, and letting rip~
sqqlLLCHBBHFRHBFHFRBRRRPFPRRFBHFRBHHbhrhHHBRFBHHHBFRFRWWWWNNNRRTTTT~
The raw force of her overwhelming shart directly into Mira’s mouth made shitfumes leak out of her nose, as she maintained an airlock with her lips. It tasted like being submerged into a septic tank underneath a mcdonalds, clinging to her tongue and the roof of her mouth. The sound was the same thick, gooey, splatter of a near-empty sauce bottle being squeezed, squelching and sludgy as Sky’s sticky ass-grease was flung onto Mira’s tongue. The full 20 uninterrupted seconds of her sister’s fetid miasma being pumped directly into her lungs were enough to make her cum handsfree, shooting thick, gooey, yellowed ropes of cocksnot all over the back of Sky’s thighs.
With a satisfying little pop~!, she unstuck her tongue from her ponut, panting heavily, and softly coughing up rancid buttfumes. Sky looked back at Mira from over her shoulder, and gave an adorable little grin :3
“H-hey sis :3 do u like… wanna cuddle for um,, the rest of the day~? :3 … I-i kinda wanna sniff more of ur farts >_< <3” she modestly offered as if her legs weren’t coated in dripping, gooey, warm cumropes~
Mira’s gaze softened, totally in love with everything about her disgusting, smelly, gooner sister. “Pfft, j-just wait for this next one… I’m toootes gonna prove my farts r grosser than urs~! >;3”