Seto looks at himself in the mirror, up and down, he looks pretty ready to go out, his pump and hose being completely hidden out of anyone's view but his own as he glances at it, sitting there in his pocket.
 He and his friends were planning to hang out that day, and as such Seto tought this rare occasion could be perfect for him to try out the new silent bulb pump he had bought online, while also feeding into his exhibitionistic desires a little.
 He slipped his feathered hands into his pockets, still looking at himself in the mirror, and tried to look natural.
 At first he was doing fine, but with more and more poses he tried, he got more carried away just messing around in front of the mirror before he suddenly heard his phone ring on the small mirror table in front of him.
 He imidietly picked it up, seeing it was one of his friends, and heard a deep male voice asking him if he's ready.
 "Y-Yeah i think so! Lemme check if i have everything one more time and then i'll head out" Seto quickly looks around putting his wallet into his pocket as well as some tissues, his friend reminding him where they're gonna meet up and Seto confirming he remembers.
 They hang up and Seto sighs, looking at himself in the mirror one more time.
 "...Cmon, you can do this, just dont overdo it and dont push your luck, easy!...Hey you're being nervous!! Stop it, you know what we have to do if we're nervous..mn~" Seto slightly shifts his legs in place as he sends a few pumps inside of himself through the pocket pump.
 It appears to be working perfectly as he feels the air acumulate inside of his butt before pushing and bubbling up his stomach which he gently runs his other hand down.
 "There we go, seems like that actually helped a little, this probably wont be as hard as i tought afterall!" Seto gives himself a wide smile in the mirror before checking his phone.
 "I should probably get going so im not the last one there, dont wanna hold them up...just a few more wont hurt though~..Hnn...pshh..psh psh psh..heh~" the lewdly owl pushes into himself a long pump and a few smaller ones to follow, his face twisting into a weird smug smirk as well as a blush and sigh as he feels his normally flat tummy bulge out a miniature bit, he hasnt even left the house yet and he's already getting a bit too excited with the pump, he himself cant imagine how he'll look outside when he cant pull those faces and audible reactions or he'll be found out, none the less he checks the time again and decides he has to stop for a little while, walking out of the bathroom doors and shouting at his Dad that he'll be back before dinner, his dad just simply nodding, not caring he's out of view of the owl boy... 

...A few minutes of walking pass by, Seto's excitement is very clearly showing on his light blush and his giddy expression, all of that changing as he approaches his friends and tries to act a bit more reserved, which as it turns out will be a little harder than he presumend since one of his friends, a small Fennec called Ellie, imidietly cling hugs him.
 "Seto!!" Her weight being almost nonexistent to Seto as she jumps up and Seto catches her, her foot paw lightly rubbing against the air pump in Seto's pocket accidentaly, lightly squeezing it and making Seto's eyes widen as he feels it, his mind trying to imidietly close them again as he hugs Ellie back and acts like nothing happened.
 "Hi guys! I'm sorry if im a little late, was trying to find my keys and...
wait a second am i not last this time? Woo! Wait who is the last one then-" Seto changes emotions on the spot, looking at the lineup of his friends who were actually there, that being the already mentioned Ellie, a bigger than usual Kobold called Zimir, Zim to his friends, and a Gryphon Parrot hybrid who also happens to be Seto's cousin, Lemi.
 "Yeah Krel couldnt make it and canceled last minute, family stuff forcing him to stay home and attend to some snobby guests his mom invited over apparently, poor guy" Zim explains, Lemi somewhat surprised answering.
 "Yeesh, im sorry to hear, sounds awful" "Yeah but whatever, he told us to still enjoy our time without him and that next time he's gonna come no matter what bullshit his mom comes up with again" Zim gives Seto a light smile apprechiating the interest.
 Ellie suddenly jumps in though, quite litteraly, as she hops in place between Seto and Zim "Guuuuuuys, cmooooon, i'm sure Krel wouldnt want us to keep discussing his misfortune and just go alreadyyyy, you know i'm restless when outside and forced to stand in one place!" Ellie's always acted a little brattish, but she's usually right just like now.
 "I agree, my legs are getting a bit stiff, besides, the stand should be open by now" Lemi says checking his watch and looking in the general direction of their favorite fast food stand and chill out spot, its a quiet little spot not many people know about near the bridge across the river that passes through their town, the food's nice, people there usually wanna relax and since its near water its also great for cooling off.
 The rest of the group agrees and all of them head out from the small local train stop they decided to meet up at.
 On the way there the group talks a bunch, Ellie being the one to talk the most as she's always excited to hang out with her friends, meanwhile Lemi and Zim tend to ignore her when she goes on about obvious stuff and talk with eachother.
 Seto tries to stand back and let them talk as he puts his hands in his pockets and wants to sneak in another pump or two, managing to squeeze another 4 in and sigh as he shakes with anticipation and fear of being found out, Ellie suddenly jumping out at him and interrupting him mid fifth pump.
 "Setooooooooooo, i asked if you're feeling alright, you're all red and shaky!" Seto quickly shakes his head and lets go off the pump wiping his face with his hands, Lemi and Zim turn around and look at him as well, noticing the same.
 "A-Ah sorry! I think im just getting sick of this heat, i should be fine once we sit down in some shade" Zim and Lemi just shrug and nod to him, continuing their convo, meanwhile Ellie runs around Seto inspecting him, noticing the bulge in his pocket but not thinking much of it since it might just be his phone or something.
 After that, Seto sighs with relief and doesnt attempt anything until their get to their destination.
 On the way there Ellie keeps trying to interact with the owl boy though, poking at his legs like a kid whenever she wants to ask him something.
 Clearly she's interested in him today, mainly cuz of how he's been acting wanting to make sure he's okay, but also cuz she always found him cute, even when she found out he's not exactly the relationship kinda guy.
 "Oh and what about at home? How have your parents been reacting to your slight changes in personality and clothing and such?" Seto raises an eyebrow before answering.
 "Hm? Oh yeah that, well they took it surprisingly fine, they still dont understand why i like the kinda clothing i do so i cant ask either of them how i look in my clothes cuz they usually dont have anything good to say, but they've been fine with it and that's better than what i expecte-" before Seto can finish Ellie bumps into his side with a cheeky smile.
 "Im glad to hear! Its strange to me that some parents cant just accept that their children wanna dress differently than is the norm, like cmon, its just clothing, if it makes ya happy feel free!" Ellie goes on about something but Seto mostly blocks her out as she bumped into the side with the pump in it, sending a sudden quick and strong gust of air up Lemi's tum and making him shiver lightly, as well as make him feel light headed.
 As soon as Seto recovers though, Ellie points to a small food stand and excitedly hops in place again.
 "Oh Oh i see it! We're almost there!" she imidietly picks up her pace and basically runs off towards it, already ordering something for herself as she couldnt even wait for the rest of the group to get there, Seto using the moment to rapid pump into himself as much as he can without making a noise, this not working out too well as at around the 15th pump he starts to lightly groan when exhaling and stops, holding back the need to place his hand on his now decently swollen belly which looks very much out of the norm on him.
 Finally they catch up with Ellie at the stand, her already eating a burger that's almost just as big as her own head, really digging into it.
 Zim and Lemi decide to order together since both of them ate before going out and as such wont eat as much, ordering a plate of fries and some ketchup with em and nothing else.
 Lemi, not really hungry but not wanting to be the only one without food decides to buy a slushie and a big quarter piece of a pizza with ham on it, sitting down next to his friends at the picnic table placed next to the stand for customers.
 Few words are exchanged between the group while they eat, mostly about school and work, as well as some rumors about people going around that Zim heard of, being the slight bit of an 'info collector' he was.
 First to finish their food was Ellie, who somehow stuffed the entire burger into her body within a few minutes, her own middle section swollen and rumbling now as it complains to her small body, and so does she to her friends.
 "Ughhhhhh, too big a burg for too little of roooooom, help me guyssss" "Cant exactly help you when you already devoured that entire thing on your own, you shall now suffer the consequences of a tummyache-" "Noooooooo!" She begins massaging her stomach after Lemi's comment, trying to get the food to settle down in her but failing as she just makes herself more sick.
 Seto at the other end of the table right across from Ellie is just getting redder and redder the more they talk about it, not being able to help himself but pretend to be drinking his slushie as he pushes loads more pumps into himself, the pumps getting quite audible as Seto handles the pump worse and worse with each pump.
 Thankfully nobody seems to notice, and after calming down a little Seto keeps pumping slower and more properly, his stomach now actually beggining to grow with each pump and making his breathing a little shaky as he tries his hardest not to moan into the straw he's drinking through.
 Finally he lets go off the pump and straw both, taking a deep breath and not being able to help himself but put a hand on his stomach as it bubbles and groans.
 Everyone notices this and turns to look at Seto, Ellie imidietly smiling thinking she's not alone with this problem.
 "See Seto gets my pain guys, its not our fault the food is good!" Her shouting makes her sigh longly and lean back as she keeps patting and gently massaging her tummy, Seto doing the same just to blend in...
also cuz it feels really nice.
 After a little bit of patting Seto feels better and decides to finally dig into his pizza, even with his stomach complaining about the air stuffed inside it.
 Zim and Lemi have already finished their fries, yet they arent nearly as stuffed as the two huffing orbs at the table, getting up and quickly throwing out the small plastic plate into the nearby trash can.
 "Whelp, we feel pretty aight, sooooo how about some water Zim?" Lemi asks, Zim nodding as they leave Seto and Ellie to themselves and go chill by the water.
 Seto takes a bite outta his pizza, feeling decently hungry despite his looks, trying to ignore the bubbling whenever he swallows.
 As easy as it is for him to ignore it though, its not for Ellie, who imidietly check him out and points it out.
 "Hey Seto? How come you already seem stuffed when you started eating just now? You seemed fine before we sat down..
" Ellie keeps rubbing and huffing while she finally is able to at least sit properly, her middle section shrinking slowly bit by bit.
 "And not to mention how weird you've been acting, you're usually all up for my hugs and poking!" She points out, before looking at Seto's pants and noticing the weird bump again.
 "And hey, what's that in your pocket youve been hiding all day? I remember my foot grazing it when we hugged, but it didnt feel like tissues or a phone!!" She barrages Seto with questions as he just sits there red as can be before he's given a chance to reply.
 "I-Its nothing!! I guess im just gassy today or today, besides the thing in my pocket is really just a packet of tissues look!" He pulls out the tissues from his other pocket showing them to Ellie, who's clearly not having it as she looks under the table and still sees the bump.
 "Uh huh, so you got two packets of tissues with you today?" Seto, now called out goes into panic mode as he doesnt know what to say or do, loosing any interest in the pizza as he puts it down and tries to come up with an excuse, Ellie just hopping down from the bench she's sitting at and walking up to Seto in her usual speedy fashion, Seto not having elsewhere to scoot away from her just sits at the very edge as she suddenly opens his pocket to look.
 "Stop hiding whatever this thing is you know i hate secrets and when people hide thi- huh? What's this?" Seto's face has completely disappeared behind his blush, his face basically just a red circle covered in fetathers as Ellie pulls the small bulb pump out of his pocket.
 "Its..some rubbery ball? And why does it have an exit and some kinda tub-" as she squeezes it Seto can't help but let out a lusty moan, as much as he hates the situation he's in and wants to disappear, it's also absolutely gratifying to him and his kinks currently being pushed to their limits, or at least one of them.
 "..Is it connected to you?" she squeezes it a few more times just to see Seto react the same exact way, moaning quietly and trying to hold them back but not being able to as his stomach suddenly feels the most sensitive it ever has, its also pushed up against the table's leg and thus each pump makes it squeeze against it more, Ellie also notices this and the fact that with each pump his tummy grows a slight bit bigger, imidietly realizing whats happening.
 Seto could practically see the small energetic bomb's eyes turn to stars as she jumps in one place and gets ready to shout something, but Seto quickly puts his hand over her maw and sits her down, quickly pushing the small bulb back into his pocket and keeping his paw over her maw.
 "P-Please dont tell anybody and dont bring attention to it!! I know its weird and im an idiot and a perv bringing it to a hangout with friends but i just read about someone doing the same thing and tought it could be fun and!!-" Ellie suddenly shakes off his hand and shushes him up instead with her own paw on his beak.
 "Hey hey its alright! You dont gotta be worried, i dont think you're a perv- well thats a lie- but i dont think youre weird and i wont tell anyone alright? You can explain it to me some other time, right now i just wanna know if you'd mind me, you know, ocasionally today just doing this~" she reaches into his pocket and gives him a few solid pumps, making him moan into her paw as he straightens up and lets his belly grow with space around it rather than squished against some wood.
 She then lets go as she giggles and says "Cuteeee~" under her giggle.
 Seto's blush not disappearing that entire time as he just pretends he's angry at her but nods to her anyways.
 "S-Sure, just not when a-anyone else could see, including Zim or Lemi, got it?" "Got it!!" she then gives Seto a big tight hug, poking his now football sized belly.
 "Sooooo, how do you plan on hiding this in front of, well anyone? You look like you've swallowed a football, and i doubt Zim or Lemi will believe you if you just say its the food-" Seto just kinda looks at her, blushes brighter and looks away again.
 "I-I dont know, i just planned on not acknowledging it at all and only if they mentioned i-" before he can finish Zim shouts at them from the river, only in his underwear.
 "Hey love birds! If you're done eating cmon and try the water, it's awesome today!!" he says as he's suddenly ambushed by Lemi hugging him from behind and dragging him into the water.
 Seto quickly stuffs the pizza into his mouth and finishes eating it, meanwhile Ellie just gets up and waits for the owl boy as she's already undressing into her own underwear and bra, letting Seto leave his electronics and stuff with her while he keeps his shorts on and runs towards the water with her.
 "Hey Seto didnt ya forget to take off your shorts?" Lemi laughs finding it a little strange.
 "Nope, its hot so i went without underwear, i didnt think we'd have a swimming session in the middle of all this!" Lemi just gives him an acknowledging ah as the two other anthro's join, Seto's shorts almost imidietly getting wet and soggy and clearly showing off the hose leading to his butt and to his pocket, in which the pump was also super visible, obviously though nobody seemed to notice or care enough as Ellie suddenly jumped onto Seto and started riding on his shoulders, Zim doing the same with Lemi as the 2 couples began to duel.
 The water activities continued even after Zim and Lemi were victorious, Seto's and Ellie's fall causing another pump to enter the owls intestines as he just groaned and continued to mess around.

Some time passes and the 4 friends get finally tired, getting to land and laying in the refreshing grass.
 Their underwear soaked and their bodies somewhat banged up, Seto's stomach a bit bigger than when he entered again as the many falls and bumps caused his pump to be constantly squeezed, not that he minded at all.
 Suddenly something started brewing inside of Seto though.
 "Hm..whelp, its nice just laying here but i need to take a leak" "Oh same here! Lets go over there behind the leg of the bridge" Seto nods and Zim with Lemi just stay on the ground, layin there not doing much as they still try and catch their breath, Seto and Ellie heading off to take a leak together.
 As soon as they get there Seto pulls down his shorts a little to pee, but Ellie had a different idea as she stands next to Seto and grabs his pump again, suddenly starting to squeeze and pump it steadily as Seto is still trying to take a leak.
 "E-Ellie what the heck!! A-At least dont look!" "Oh come on, you're pretending like we havent just seen eachother's junk in soggy clothing~" she wasnt wrong, everyone definitely saw and checked eachother out while the fighting was going on, meaning there wasnt much to hide, especially not Seto's slit that hid his member when needed.
 "Well, it s-still feels weird you know, a-and!-" She suddenly picks up her pace causing Seto to finish his duties sooner than intended, his member not sliding back inside like it normally would though.
 Ellie slows back down again after he hushes, clearly playing with him as he holds his bloated tummy and groans very quietly leaning against the stone wall of the bridge.
 "Hah..god...s-slow down a little, my belly is starting to hurt a bit..nh~" Ellie nods and slows down even further, giving him a few ocasional pumps as she rubs her paw against the orb he had stuck to him.
 "..you know, you look really cute all worked up and struggling like this, i know it sounds weird, but you really do~" She then lets go of the pump alltogether and dedicates her paws to rubbing Seto's rubling and tight overinflated basketball stomach.
 "Can you still take more or is this your limit?" "P-Probably more, im not sure, i dont really think ive ever been this big but im not hurting really badly yet-" "I'll take that as consent for more before we go home then~" Ellie nuzzles him a little before turning him around and pushing him a little.
 "Now shoo, i still need to pee for real" Seto sighs and walks back to his friends where he just sits down and watches the water run by, Zim and Lemi appear to also be holding hands which Seto doesnt comment on and just lets them, waiting for Ellie to come back.
 After a minute or two she comes back as energetic as ever, rushing all of them to go dress up again as she wants to catch the sunset from the bridge, herself already somehow dressed up and with her stuff rushing over to the bridge.
 Seto tries to put on his shirt but sees how much its rolling upward, deciding it might be better to just go without it, the two other boys dressing up normally and walking over to the bridge, seeing the small excited Fennec laying on the stone wall and watching the sunset, joining her as Seto leans against it, Zim sits on it and Lemi holds Zim from the back, all of them watching it in almost complete silence, just enjoying the moment...

..."Sooo, yall wanna repeat this tomorrow or are we too busy?" "Im down" "Yes Please!!" "I-I think im not doing anything so sure!" As Zim asks everyone answers with positives, making him and eachother smile as they climb down from the wall and walk slowly back to the small train station they met up at in the first place.
 On the way there it's clear everyone's more tired out, even Ellie somehow, making Seto and the others smile.
 They talk about what they loved about today and chat about their days before they hung out, Ellie joining in to talk about the food she managed to make that day and how it didnt burn for once.
 Seto just listens in as his morning till noon wasnt all that interesting, leaving him somewhat empty handed, though he didnt mind at least.
 Finally they arrived at the small station, saying their goodbyes for the day as Lemi and Zim shared a quick sneaky kiss, and Lemi went further along the train tracks before turning on the road to the appartment complex, Zim staying at the station as his train would arrive in a little bit, and Seto and Ellie going home together the oposite way from Lemi.
 On their way back they stayed silent for a little while for obvious reasons, but once they were out of Zim's range Ellie imidietly dragged Seto to the nearest dark alley and hid in it with him, looking him in the eyes from down there with her tongue out.
 "So, you still feel like you've got room in there?~" Seto's blush reappears and takes up most of his face again, Ellie already reaching for the pump in his pocket without him even responding.
 "Y-Yeah, i'm pretty sure, b-but not much so..p-please be careful, alright?" Ellie giggles and takes the owl's pump out of his pocket, holding it in her paw comfortably and leaning agains the front of Seto's chest and stomach.
 She gently presses the pump down, a slow and paced out gust of air pushing its way inside of the boy as he quietly and cutely groans.
 "Don't worry cutie, i'd never even dare and hurt you on purpose, alright? Just tell me when you're starting to feel pain and i'll stop and help ease it, alright?~" She gives his tummy a small kiss as she begins to pump gently, slowly, and yet steadily, enjoying each pump as she sees the boy's reaction from the initial sound and feeling to his eventual groan or moan he oh so loved to make.
 his basketball belly was starting to be much more than that as it had swollen past that point long ago, and was now heading slowly but surely to indescribable proportions.
 The air had swollen his entire stomach by now and Seto could feel each pump not only make him grow tighter, but also climb higher up the front of his body, his chest beggining to rise to acomodate to his reddening and procedually more hurting stomach.
 "You're getting awfuly loud Seto, you sure you still dont feel any serious pain?" "N-No i..nmh~..i-i just feel really good~ W-We can stop after a few more pumps if you're worried~" Seto is now leaning against the wall intentionaly as the size and sensation in front has made his legs weaken, his moans becoming indeed louder as Ellie listens to him and obeys, continuing to pump for a while longer as she hears the owl boy slowly break, inhaling sharply as his eyes get a bit watery and tired.
 Ellie runs her paw across his skin on his stomach and notices how tight and sensitive it has gotten, noticing even small pords make Seto moan loudly and uncontrolably, and with this she slowly stops, taking the pump and screwing in the small lock preventing any air from entering or leaving the hose and Seto.
 Ellie looks up at the tired and worn out owl boy and takes him under his arm.
 "Hey, Seto, you'll sleep at my place today, alright? I'll call your dad and tell him you're with me, so dont worry" The balloon of an owl barely even registers Ellie said anything, as he just barely nods to her before closing his eyes and walking with Ellie automatically, pretty much just dragging himself.
 Thankfully Ellie dragged him to an alley right next to her house, and as such the way isnt long before they get somewhere inside and Ellie brings the owl some pillows and a blanket, still clothed in soggy shorts Seto passes out almost imidietly, Ellie giggling as she sees this while calling up Seto's dad, his dad thanking Ellie and asking her if he should pick up Seto after he's awake tomorrow.
 "Oh hehe, i don't think you'll have to do that, we might just hang out all day tomorrow since me and Seto found out we have quite a few things in common~ So dont worry, if anything happens i'll call" after a few more seconds of calling Seto's dad hangs up, Ellie smiling to herself and sighing.

 "Today was fun, let's see if tomorrow's even better~"