"C'mon then, kid. Let's see it."

In the small cubicle of the boy's bathroom at Happy Acorns Middle School, a teacher's assistant and a 10-year-old boy stood huddled together, crammed between the close-to-wall-high cubicle door and the cheap toilet directly opposite, its lid snapped down. It was a peculiar situation as to why they ended up there, but anyone hearing the words that came from the assistant's lips would have an inkling of what they wanted to see.

It had started as a little rumour that inevitably blew out of proportion, and most would have brushed it off or denied it entirely, but young Asadachi Shuin, or simply Shu for short amongst his peers, was a little cocky and perhaps just a little too eager to gain notoriety and popularity-- when word got around that Tanukis like him have huge balls, he started to boast about the fact, attesting to how big and juicy his nuts were compared to other boys around his age. Some kids at the middle school swore up and down that the rumours were true, and others were insisting the opposite. The teacher's assistant, Kooma, was sceptical; they were a hit amongst the kids due to their rather carefree personality, the fact they were a part of the queer community and their blunt way of speaking that sugar-coated nothing compared to their stuck-up parents...so when Kooma had engaged in the banter, Shu was desperate to keep up the facade. All of that led to the very moment the two shared within the boy's bathroom of the school.

The Tanuki boy squirmed awkwardly, but he looked courageous, despite that. For a moment he hesitated at the bear's teasing words, but he obliged, wanting to live up to the hype; he reached down to the black waistband of his formal trousers and fumbled with the button, his slightly chubby belly bulging the shirt outwards a little, where it remained trapped within the confines of his tucked-in shirt. When the button came free, the trousers sagged with relief but clung to his hips as they slipped down just slightly without aid from the boy's hands. Shu slowly moved his hands from the front to the sides and pushed down, keeping his gaze down as the trousers slipped past his hips, where they resisted sinking further thanks to those thicker-than-average thighs, but a little wriggle brought them down. Kooma watched with an intense silence, their eyes lidded slightly as the trousers dropped and flopped into a heap around the boy's shoes.

From a distance, the rumours might be true; Shu's underwear seemed to be struggling to contain him, but that didn't necessarily mean anything-- after all, Shu could be stuffing socks down his underwear to fake it. With a simple gesture, Kooma urged Shu to continue, and the Tanuki looked up at them for a moment before he hooked his thumbs into the waistband of his plain white briefs, hesitating for a fraction of a second before he snaked his thumbs to the front and pushed down. For a moment, his package was obscured by his arms, but he angled and spread them appropriately to show himself off.

"S-See?" Shu awkwardly mumbled, trying to keep up his bravado despite his nerves, and Kooma tilted their head to the side to examine the 10-year-old. Sure enough, Shu was not lying; his little dick was perhaps a little larger than average, but those balls were immense, each one plump and practically spilling out from the legholes of his briefs. The flesh of the sack was fuzzy and matched the brown hues of the boy's body, and as those balls rolled around and found new positions as Shu adjusted his hands, the skin beneath the fur grew taut in the coolness of the bathroom, making those nuts look significantly more plump than before.

"Holy shit," Kooma did not restrain their swearing, reaching a hand up to run it through the tuft of spike black hair, highlighted pink and blue, atop their head. "You weren't kidding, Shu. I'm impressed."

Shu didn't seem to know what to say for a moment, awkwardly rolling his lower jaw in a way that might have indicated he was grinding his teeth. He then looked back up at the teacher's assistant, dragging his thumbs to the side and rolling the fabric of the underwear down to keep himself exposed.

"It's good, right? I wasn't lying..." Shu argued, and Kooma could see he was resisting the urge to pout. The white-furred bear grinned and reached out to rub the top of the boy's head, ruffling the boyish tufts of fur between his rounded.

"Good on you for being honest." Kooma beamed, pleased...but more than that, they were aroused. Seeing that little dick and those huge, unnatural nuts made their loins tingle in ways they often only really felt looking at porn online. What they saw before them was pure and utter perfection, and their body liked it.

"So..." Shu began, casting his gaze to the side as he wiggled on the spot, clearly anxious. "Can I, um...can I see yours, Kooma?"

That wasn't something Kooma was expecting to hear; they thought they might have to somehow persuade Shu one way or another, but for him to be so open honestly made it easy. Without so much as another word, the bear reached down, easily undoing their shorts and letting them fall around their muscle-gut frame. Unlike Shu, they were wearing looser boxer shorts, which made it all the more obvious how turned on they were getting; there was a distinct tenting in the front that even the 10-year-old couldn't ignore.

Kooma didn't make the boy wait; their boxers came down shortly after their pants, and they greeted Shu to the sight of their cock, springing upwards from within the confines of their underwear. Unlike the Tanuki boy, whose private parts were distinctly humanoid in shape with a little foreskin, Kooma's cock was pinkish and came out from its swollen, stretched sheath, where a set of plump white balls, surprisingly a little smaller than Shu's own, sat beneath it.

"Woah..." Shu looked at the bear's cock in awe, squirming a little on the spot, and Kooma cast their gaze down, smirking when they saw that young dick twitching and bouncing, aroused by the sight. It's all Kooma could ever want from the boy, but since they'd gone this far, Kooma wanted to go even further. They shifted, spreading their legs out a little and stepping out of their pants, before they moved to manhandle the boy, changing their positions so that the cub was closest to the cubicle door whilst Kooma moved to sit on the lip of the toilet, spreading their legs apart to show themselves off. Surprisingly, they didn't need to tell Shu to approach; the boy did so of his own volition, shuffling forwards until their steadily growing dick hovered mere inches from Kooma's own. His balls jiggled and bounced with each subtle movement, rolling left and right, and Kooma couldn't help but reach out to grab them.

Shu sucked in a breath and stiffened, his muscles tensing as Kooma's large bear palms came to cradle each thick nut, large enough that they couldn't hold both with one hand, despite their efforts. They curled their digits to squeeze and roll around those balls as they watched Shu's dick rapidly swell, easily stimulated by just a little touch. As the cub's cock bobbed to full mast-- and it was definitely more hung than the average 10-year-old at a stunning 4 inches-- Kooma couldn't help but to lift and lower their legs, bouncing their hands up and down in a way that jiggled the sack and encouraged Shu more, causing the young Tanuki to huff and groan quietly under his breath.

"Want to see how mine feels?" Kooma asked him, inevitably relinquishing his grip and leaning back so that he could show themselves off. The tanuki boy squirmed on the spot and shifted for a moment, very clearly unable to take his eyes off it, before he approached the bear, steadily but slowly. Kooma spread their legs to allow the cub closer, and after a handful of moments the boy's short stature lined up almost perfectly with Kooma's own, his large balls and ample-sized cock hovering inches from the bear's turgid length. Kooma wasted no time in reaching out, wrapping their hand around their own cock to jerk it up and down slightly with a leisurely glide of their hand, before they uncurled their fingers towards the tanuki's length, hooking around and pulling it closer. Shu sucked in a breath and leant forwards to closer the distance between them, reaching out to put his hands on the bear's shoulders, and with a groan the length of his young dick settled up against the bear's 6-inch length. Kooma's own thick nuts stacked up comparably, perhaps even less so, against Shu's voluminous balls, and just the sight of it made the bear's body tingle with desperate, eager lust.

"How does that feel?" Kooma asked quietly as he jerked his hand up and down, stroking both their cocks at the same time. "Feel good?"

"Mmh." Shu barely vocalised a word-- all he could do was huff and quietly moan his approval, occasionally rolling his hips up against the other's twitching length, stimulating the two of them. The tip of the bear's cock was already starting to leak pre-cum, and it trickled down between their members, slickening up the 10-year-old's subtle, pleasure-driven movements, making them slippery and slick.

"Do you want more?" Kooma asked with a lick of their lips. "I have some ideas..."

"L...Like what?" Shu paused his thrusts to apprehensively ask what Kooma was thinking of, but the white bear didn't give him much of a response. Instead, they reached out to pluck at the lower buttons of Shu's school shirt, just so they could part it enough to get a look at that slightly chubby belly. They groped the boy for only a few moments longer before they reached over towards Shu's hips, turning him on the spot so that he was facing away from Kooma's body. For a moment, Shu didn't entirely understand, and his naivety showed as Kooma's thumbs moved inwards and gripped against Shu's cheeks, spreading them slightly to reveal the hole beneath. They examined that young pucker with an intense desire before, with a swift tug, Kooma brought Shu towards his body. The 10-year-old stumbled and staggered backwards, losing his balance and inevitably falling back onto Kooma's lap.

Anyone who was at least a little experienced in sex would have understood the bear's intentions almost instantly, especially when their thick, turgid cock pressed and lined up against Shu's cheeks, the underside of that cock rubbing against the fur and flesh. Kooma groaned his approval as the pressure against their cock strengthened the more Shu instinctively relaxed against them, though it was clear the boy was still nervous, but he stiffened slightly when Kooma's hands snuck around to Shu's front, stroking along his sides and around to his stomach, before back towards his hips.

"This might sting, but it'll feel good, I promise." Kooma assured the boy as they moved a hand between them, squirming and worming around until their fingers met with the base of their cock. With their other hand, they coaxed the boy into lifting himself up, moving into a position where, after some coaxing, the head of Kooma's cock, slick with pre, slipped between those young, small cheeks and towards his puckered, presumably virgin hole. Shu grunted briefly from the discomfort of pressure against the entrance, but he barely had time to adjust before the bear started to push, using one hand to tug Shu down whilst the other kept steady to to the base of their member, keeping it turgid and hard.

There was some resistance at first as Shu's hols clenched and squeezed, instinctively trying to push the bear's cock out, but his muscles inevitably started to relax, and with a gentle sigh of pleasure and a quiet hiss, Kooma started to sink inside. Their twitching member managed to slide in an inch or so before they paused, loosening their grip on the boy for a moment to give him time to adjust before sinking in again, stuffing inside just a couple more inches. They were about halfway inside by the time they paused again, their breathing low and heavy, and above them Shu shifted, grunting in a mixture of discomfort and confusion-- Kooma had no doubt the cub was a little taken by surprise, and perhaps didn't entirely understand the situation, or even the sensations he was feeling. Kooma knew the boy would have plenty of time to get it, for they only paused for a handful of moments before they started to push forward again.

"You feel so tight...do you like it?" Kooma asked quietly, but the boy's wordless grunts were indication enough of his discomfort. "Don't worry, you're going great..."

Slowly, Kooma eased into a rhythm; they didn't plunge themselves all the way and instead rolled back to withdraw, sinking a handful of inches out of that young hole before they pushed back in again, lapsing into a slow rhythm. They didn't need much to get stimulated; the sheer tightness of those inner walls was more than enough to turn them on, and the simple movements of their slowly pumping humps made their body tingle in delightful ways. Shu let out quiet and gentle whimpers with a certain degree of uncertainty, his body shifting as he tried to alleviate the discomfort as he lifted his legs, trying to find purchase. Eventually, he settled for his hands leaning back to put them on Kooma's legs, attempting to find some kind of purchase as his shoes, unable to touch the floor, wiggled and swung.

Inevitably, the sounds of their sex became moist and ample; the bear's slowly moving hips helped to smear and slicken the pre-cum all around their cock, which in turn made each subsequent hump, roll and thrust wet and audible. They started to pick up speed over time, moving with quickening precision as their breathing grew heavier. They sighed with pleasured approval into the cub's ear as their hands wrapped around and worked to stroke and grip onto Shu's hips, squeezing as they used their hands to keep the boy up, occasionally tugging him down onto their cock so that Shu could fully take it all. Each time the Tanuki's young ass pressed right down to their sheath, the bear's thick balls twitched and tensed, clenching with an eagerness to bust. Shu's balls were similar; they were snug and pouch-like in the tension of sex and discomfort, and his little dick had sagged to a half-limp erection thanks to the occasional spasm and spike of tension within him, mixed with the pleasure of that cock dragging and lining up against his prostate.

Kooma couldn't slow down after a point, too eager to cum to take their time in fucking the boy-- were they in a better position, they would have fucked Shu into the tiles, or in a better and more convenient classroom, but they took what they could get. Even just the inch or so movements they could manage were enough to send them closer and closer, and eventually one of their hands moved around to the front, cupping and groping around the Tanuki's massive, jiggling nuts, that bounced with every hump through became more steady when Kooma's palm pressed to the heat of one nut.

"Oooh..." The bear rolled their head back, huffing out hot and heavy breaths as their pleasure grew, quiet whimpers escaping the Tanuki's muzzle as Kooma started to push with a little more force, feeling their loins tighten and remind them of how close they were. They managed to hold out for a handful moments more, relishing the moment and etching it into their mind as their balls churned and the telltale straining grew until, with a long and aching sigh, the bear climaxed.

Thick and ample spurts of cum shot from the end of their member and directly into the depths of that slightly chubby cub, pulsing and pumping deep into his stomach as those inner walls clenched and squeezed, milking the bear's cock. Kooma grunted and huffed, sucking in gasping breaths and letting out tender sighs and moans as they settled his humping movements, tugging the boy down to keep Shu close to their relaxing body. Their muscles felt like jelly, but each spasming squeeze around their orgasming cock made him stiffen and grunt with approval. Shu huffed, his eyes lidded over, and though Kooma couldn't see, they were sure the boy understood what had happened between them-- after all, if the 10-year-old were so knowledgable about how above-average his balls were, surely he knew what sex was too, right?

"Good...Good boy..." Kooma hummed, leaning towards the boy and nuzzling against his cheek, their hands running over the Tanuki's hips and down to his ass, trying to worm between them so they could spread those cheeks a little more and truly relish the all-encapsulating feeling of that tight, young ass around their dick. Shu tilted his head slightly, glancing at the bear out of the corner of his eye, but he didn't seem to have the words to describe what had happened, at least not at that moment. There was a quiet silence between them for what felt like far too long, to the point where Kooma was starting to get nervous about the boy's reaction...but finally, the Tanuki spoke.

"Um...is it okay if I miss next period?" The 10-year-old asked sheepishly. "I think I need to clean up, and, um..."

"And...?" Kooma pressed for more, causing Shu to squirm on his lap, inadvertently squeezing around the bear's still-hard length.

"O-Other stuff." It was clear he was interested, and that just made Kooma smirk.

"I'll make sure to smooth it over with your teacher," Kooma insisted. "Now...what exactly do you want to do?"

The next hour was going to be quite the experience for both of them.