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“Relax, buddy.” Sasha leaned against the edge of the ring, pulling one leg behind her and stretching her quads as she tried to reassure her nervous sparring partner. “Amber tells me that she’s kicked you in the balls THOUSANDS of times before — if that’s true, this should be no problem.”

“Uh…r-right.” Isaac swallowed, his mouth dry with fearful anticipation and pent-up arousal.

Isaac had been training for the Underground League for more than a month now, and in that time, his Lucario girlfriend had put his testicles through hell — all to help him prepare for battle, of course. Amber knew his balls like the back of her paw, and that meant she knew all the best ways to make them ache: toying with his denied dick until it was on the edge of eruption, then pounding the spunk back into his spunk tanks before he could make a mess, and then repeating the whole process as frequently as the Umbreon male could take. Multiple times a day, Isaac would spread his legs for her and let her do her worst. His balls grew bigger and bluer by the day, in preparation for the even more agonizing ball abuse that awaited him in his first Underground League match.

Recently, though, Amber had encouraged him to find other females to train with as well. “Look,” she had told him, while taking a break from sucking his dick to slam a few punches into his black-furred sac, “if I’m the only girl who ever busts your balls or teases your dick, then you’re going to have trouble keeping your cool in an actual battle. Every opponent’s a little different, you know? You need some variety in your routine. So I asked a few of my girlfriends if they’d be willing to help us out…oh, and that cute Charmeleon chick that you work with…and that Zoroark girl next door…”

That was how the Umbreon had wound up here, in a one-on-one session with Sasha. Just one look at her long, strong legs made his testicles ache. Or maybe that was the lingering agony from all the nut-crunching knees that Amber had given him earlier this morning? Hard to say.

Sasha was quite the sparring partner. The Blaziken was half a foot taller than Isaac, with flowing cream-colored hair and with a confident smile on her face…but Isaac wasn’t paying a lot of attention to her face right now. Not with the rest of her naked body on display…

Underground League matches were always fought in the nude, and today’s training session was no exception. Over the past month, Isaac had been edged and denied by his girlfriend Amber MANY times, and while it was always a struggle to hold his cum back, he had at least grown more used to the sight of her naked body over time. The well-toned Blaziken babe warming up in front of him, on the other hand, was fresh meat for his orgasm-starved libido. He found himself captivated by every part of her body: her generous tits, her smooth stomach, her thick thighs. He hadn’t caught a great look at her ass yet, but he was dying for an opportunity to check her out from behind. His dick had leapt to attention as soon as Sasha had stepped into the ring, and he could feel his balls physically churning as he continued to stare at her, the heavy orbs growing even heavier with unspent cum.

Sasha noticed the attention. “Like what you see?” the bird teased, twisting her torso to one side and reaching down to touch her toes.

Isaac blushed, but he still couldn’t tear his gaze away. His eyes fell to her breasts, watching the way they hung from her chest as she bent over. “Uh…”

“Hey, no need to be shy about it.” The female straightened back up, grinning and planting a hand on her hip. “I know you haven’t cum all month — but at least you can enjoy the view, right?”

The male’s dick gave a mighty throb, precum glistening at its tip. “…Right,” he agreed weakly. “Thanks.”

“Any time. Now come on,” she continued, gesturing at him to come closer. “Let’s get this training session started.”

Tentatively, Isaac meandered over, trying to ignore the persistent ache of his twin pupmakers jostling about between his thighs. His eyes continued to dart back and forth between the female’s breasts, her powerful legs, and the precious spot nestled between her thighs…

“A little closer…there, right there.” The Blaziken held out a hand to stop him, lowering her own gaze to the male’s dangling sac. Slowly she raised her right leg, gauging the distance between the two of them. Ever-so-gently, she bumped the top of her bare foot against the underside of his furred nutsac.

The Umbreon whimpered under his breath. Even that tiny touch rekindled a bit of ache in his abused orbs. He was suddenly reminded of his own nakedness, and the total vulnerability of his dangling plums.

“Perfect.” Sasha lowered her leg, folding her arms across her chest. “Alright, cool. So today, we’re gonna do some visualization training.”

Isaac managed to tear his eyes away from her curves for a moment, though his cock continued to drip. “Visualization training?”

She nodded. “Yep! When I train for battles, one technique that’s always worked really well for me is to visualize what’s going to happen, before the battle even begins. It’s a mental thing — it helps your mind be prepared for when the actual thing happens, so that you can react more quickly and more effectively. Get it?”

“Ah, yeah, I think I’ve heard of that before.”

“Sweet. So to get started with our visualization training today, we’re gonna practice visualizing what it’s like to get kicked in the balls.”

Isaac paused. “Huh. Uh, okay I guess?” His eyes widened hopefully as a thought occurred to him. “Wait, hang on…if I’m just VISUALIZING getting kicked in the balls, then does that mean you’re not actually gonna kick my nuts today?”

The Blaziken laughed and shook her head. “Haha, no, I’ll DEFINITELY still be kicking you in the nuts. I just want you to visualize what it’s going to be like BEFORE I do it. That way, you’ll be more prepared for it when it happens!”

The Umbreon sagged in disappointment. “…Oh.”

Sasha smiled at him. “Look, I know getting your balls kicked around isn’t fun for ANY guy, but I honestly think this’ll help you out a lot in the Underground League. Fighting through pain is all about mind over matter, and visualization can make a HUGE difference. In fact, here: let’s start the day with a reference kick, so you can compare how it feels before and after.”

Isaac frowned in confusion. “What do you mean, a reference—?”

THUD.

And just like that, the Blaziken’s foot was buried in his groin, slamming up into his swollen spuds like a feathered sledgehammer. Isaac’s pupils shrunk into pinpricks as he was briefly lifted up into the air, his cum-packed pupmakers crushed brutally against the hard bone of his pelvis. Nausea exploded in his gut — a familiar warning from his testicles that they were being treated in ways that might be VERY bad for his future sperm count. The month’s worth of pent-up spunk that was stored in his balls didn’t help either, as his gonads were forced to contort themselves into new and unusual shapes between the female’s toes in order to remain in one piece while accommodating so much unspent semen.

“[i]Guh,[/i]” the Umbreon managed to squeak, his voice somewhere between a moan and a mewl. Instinctively his paws shot forward to grab the female’s calf, but Sasha had already lowered her leg, having finished her work for now.

“So there’s a reference kick,” the female continued, unfazed. The naked bird smiled ever-so-slightly as she watched her partner quiver in place, fighting to remain standing. “That’s what it feels like when I kick you in the balls and you haven’t been visualizing it in advance. How’s it feel?”

It was a tremendous credit to Amber’s training that Isaac was able to stay on his feet after such a hard, unexpected blow to the balls — especially from a Blaziken, whose kicks were famously strong. He even managed to force his paws back to his sides, rather than clutching his aching sac. That said, the Umbreon’s legs still shook underneath him like jelly, and it still felt like a small bomb had just gone off in his abdomen.

It took several long seconds for the shaking male to put together a response. “…It feels bad,” he croaked eventually, still trembling in place. His eyes remained locked on the female’s foot, in fear that she might strike again.

Sasha chuckled, once again planting a hand on her bare hip. “Thought so. It’s hard to endure something like that when you’re not ready yet! Just imagine if that had been a full-force kick — you’d be so busy dealing with the pain that I could probably just circle around behind you and line up ANOTHER easy punt in the balls.”

Isaac groaned in agreement, his nuts throbbing angrily with his heartbeat. He eyed the female’s leg with newfound appreciation and fear. That hadn’t been full-force?! She’d lifted his entire body half a foot into the air!!

“Now…let’s try that a second time, but first let’s spend a minute doing some visualization.” The female raised her leg a second time — more slowly on this approach, thankfully. “That is, let’s visualize what it’s going to look like and feel like when I slam my foot into your balls again.”

‘Slam’ was a rather frightening verb, and Isaac’s balls were still VERY tender. The Umbreon gasped in surprise as her foot made gentle contact with his ballbag once more. Instinctively he tensed up, shutting his eyes.

Sasha made a noise of disapproval. “Nuh-uh, keep those eyes open. You can’t picture what a kick in the balls looks like if you don’t take a second to study it first.” She glanced down at her own naked body. “Also, I know you’ve been staring at me since I took my clothes off, but you could probably use another moment to study me too. Visualization works better when you’ve got a clear image, so come on — take a look. If I’m gonna kick your nuts in, least I could do is let you stare at me a bit.”

Slowly, Isaac opened one eye, and then the other. There was Sasha, just a few feet away, every feather of her on display. He met her gaze for a brief moment, then allowed his eyes to wander all over her body — every enticing inch. The way her breasts rose and fell with each breath. The tuft of red feathers just above her sex. The spot where her raised thigh met the rounded swell of her hip. The subtle power behind her muscled curves.

The male’s dick twitched and throbbed in appreciation. It had softened just a bit after that thunderous kick, but the hormone-crazed male still needed to cum as badly as ever, and it was hard NOT to drip in the presence of such a fine female specimen. He couldn’t help but imagine what a few thick ropes of white might look like splashed across her red feathers…

The Blaziken smirked, feeling a bit of a tingle at being so carefully observed. “Glad you’re enjoying the view. Now let’s focus in on my leg a bit more — I can’t keep it raised like this forever. See how it looks in the middle of a kick like this?”

Isaac nodded, looking down at the leg that had scrambled his eggs just a few moments prior. The Umbreon was quite familiar with what it looked like to be kicked in the groin — Amber kicked him about 100 times a day, after all — but with Sasha, it was a little different. The fiery chick was a little meatier in the thigh (which helped to explain her incredible kicking power), and her feathers continued all the way down the length of her leg, covering most of her foot in a layer of shag. Three clawed toes peeked out from the fluff, though at the moment they were only partially visible behind the round orbs of his own swollen nutsac.

Sasha wiggled those toes, and the male’s breath caught in his throat as his recently-kicked balls bobbled in his pouch for a moment. The twinge of ache that shot up his spine was a sharp reminder of just how vulnerable he was in this position.

“Getting a good look?” the bird asked.

“Yeah,” Isaac breathed.

“Good.” Sasha grinned. “Make sure to pay attention to your own body, too. I want you to really visualize the way that your balls look in the middle of a nice hard kick.” The female raised her foot a little higher, pushing his cum-stuffed testicles further up into his groin. One fat nut bulged out from each side of his twitching erection, cradled somewhat threateningly in the space between Sasha’s toes. “Take a look.”

Obediently, the Umbreon looked down, trying to ignore his drooling dick and focus on his twin spunk tanks. It was rare to feel a female’s foot against his sac without a violent explosion of nutpain to accompany it. To be honest, the light pressure on his achy blue balls was kind of pleasant. It was nice having someone to help bear the physical weight of his heavy, heavy blue balls, if only for a moment.

“Hey.” The Blaziken’s tone was kind but firm. “Don’t just think about how your balls look right now — think about how they’ll look at the moment of impact.” She curled her big toe, then flicked it back up into the canine’s right nut. “For one thing, they’ll be flatter than this, right?”

Isaac inhaled sharply. “Y-yeah…”

“Describe it to me. What will they look like?”

“Well, they’ll…they’ll probably squish between your toes a bit, depending on how you hit ‘em.” A pang of sympathy pain bloomed in the Umbreon’s gut as he pictured the trauma. “When Amber kicks me, it feels like they kind of, uh…they try to squirm out of the way? But usually she ends up crushing at least one.”

“Mm. Yeah, I’ve definitely seen that kinda squirming and squishing in Underground League slow-mo replays.” Sasha paused. “Actually…now that I think about it, I should bring a slow-mo camera to our next training session. I bet you could visualize this WAY better if you could actually watch your own balls getting squished.”

Isaac’s stomach churned. “Sounds great,” he agreed resignedly.

“Anyway.” The Blaziken shook her head, returning to her previous train of thought. “So my leg’s up high, your nuts are all squished out of shape, all that good stuff. What else can you visualize?”

Isaac tried to think back through the many, many times that his girlfriend had booted him in the balls. There were a few other details that he could picture very clearly.

“There’s the sound?” he reported uncertainly. “Like, when your foot hits my balls.” He could practically hear it now: that fleshy SMACK as foot met ballbag.

“Mm, that’s a good detail.” Sasha nodded approvingly. “Sound is important!”

“And uh…” He swallowed, looking away from his vulnerable nutsac and up at the naked bird once more. “There’s the uh, the jiggle?”

“You mean the way your balls bounce?”

He shook his head. “No, like…the way YOU jiggle. It kind of, like…it travels up your leg, through your thigh and up into your torso.”

“Ahhhh, got it.” The Blaziken grinned and gave a little shimmy, enough to make her bare breasts wobble in place for a moment. “’The jiggle’. I’m sure that’s a nice reward when you’re training with Amber.”

In truth, it was. In some of his toughest moments, Isaac had learned to fixate on that tiny blessing, focusing all his thoughts on Amber’s curves as she repeatedly punted his nuts into his throat. After more than a month without an orgasm, he was so hungry for sex that even that meager scrap felt like a half-decent reward.

In hindsight, Isaac was sad that he had missed Sasha’s “jiggle” after her first surprise kick, but unfortunately he had been far too unprepared. It was especially tragic because the female had a GREAT pair of breasts to focus on. His eyes fell to her tits now, drinking in the sight of her beautiful, bountiful curves.

Sasha seemed to read his mind — not that it was particularly difficult, given the way that he was ogling her. “Don’t worry,” she reassured him. “You’ll get another chance to see me jiggle in a second.” She slid her foot a few inches upwards, spreading her toes wide to grip around the base of the Umbreon’s drooling shaft.

“Haaaaah,” the male breathed, his cock throbbing hard enough to fire a short spurt of precum across the female’s feathers. His balls churned for a different reason now, as they struggled to hold back the pressurized contents that they had been building up for weeks.

Thankfully, Sasha was more interested in ballbusting than in cockteasing, and just as committed to Isaac’s denial as his girlfriend Amber. Sasha gave the Umbreon one friendly stroke — earning another spurt of pre that splashed across her shin — then withdrew her leg.

“Hoo boy!” The female pulled her leg back behind her once again, stretching out her quad. “Man, holding up your leg for that long is NOT easy. I’m gonna feel that in my thigh tomorrow.”

[i]And I’m going to feel this in my balls for weeks,[/i] Isaac thought, though he knew better than to say it out loud. After all, Sasha was doing him a favor. It would be awfully rude to act ungrateful about it.

“I think that’s probably enough visualizing for now.” Sasha grinned down at him. “You’ve got a pretty good mental image of what it’s gonna look like when I kick your nuts again, right? The squish, the smack, the jiggle. All that good stuff.”

“Yup,” the male agreed solemnly.

“Then let’s do this.” The Blaziken let go of her leg, shaking it out for a moment. “Sasha kicks Isaac in the balls, round two. Make sure you’re visualizing what’s about to happen, and really pay attention to it in the moment. If you know what’s going to happen, then it should be easier to deal with it when it actually DOES happen.”

“Right.” Isaac winced, looking away for a moment, but then he forced himself to focus like Sasha had instructed. One more time, his eyes traced down the length of her leg, envisioning her thunderous thigh in motion, her strong calf whipping forwards, her foot crashing up into his already swollen plums. He could imagine the crisp SLAP as she made contact, driving his cum-packed nuts up into his pelvic bone. He could picture the way his testicles would reshape themselves around her toes, abandoning their usual round proportions in order to survive the onslaught intact. He might leak a few drops of pre onto Sasha’s ankle, his pent-up sperm physically forced out from his overstuffed orbs. That all-too-familiar ache would explode outwards from his groin: first a sharp jolt of agony up his spine, then a wave of nausea that would seep through his entire torso. The impact would ripple up the length of the Blaziken’s leg, hard enough to make her tits bounce on her chest. And then…

…

…well, then the worst of it would be over. Sure, his balls would continue to scream at him for quite a while afterwards, and it would take plenty of effort to avoid collapsing into a mewling, quivering heap, but the agony wouldn’t get any WORSE from that point onward. Once his eggs had already been scrambled, getting through the aftermath was just a matter of endurance…and over the past month, Isaac had learned to endure quite a lot.

Sasha lifted her leg up halfway to the Umbreon’s groin, closing one eye to help her line up her shot. “You ready?” she asked.

Isaac gave the scene one more look. His balls — already freshly flattened, and about to be flattened again — looked surprisingly normal, given the non-stop abuse that they had been soaking up for weeks. His cock remained rock-hard, despite the imminent threat to his gonads. And the naked Blaziken standing in front of him…well, he had to take at least one final moment to admire her well-toned curves. It was so easy to imagine her glazed in rope after rope of his thick white spunk, his long-pent-up seed dripping from every inch of her gorgeous body…

Isaac wondered if he’d get the chance to masturbate to this memory in the future. Someday when he was actually allowed to cum again.

“…Ready,” he affirmed, meeting Sasha’s gaze.

The Blaziken grinned, pulling her leg back. Her thigh bulged with power. “Then keep those legs spread—”

WHUMP!

It was over in an instant, as the Umbreon’s testicles were reintroduced to the female’s foot at roughly 100 miles per hour — but thanks to all the time that Isaac had spent visualizing, he found himself able to follow the events in more detail than he ever had before. The feeling of her feathers against his ballsac. The quiet [i]slap[/i] of his stiff cock against the top of her foot. The way that his left nut spun slightly as it tried to slip aside and dodge the blow, almost escaping but ultimately getting just as thoroughly crushed as its brother.

And then of course, there was the pain itself. It started in his testicles — a sharp pang of distress as his pupmakers were compressed to a fraction of their usual plumpness — but a split second later, another separate ache bloomed in his abdomen, starting near his kidneys and rapidly expanding outwards. The two sensations rolled and tumbled in his gut, swirling around each other in an exquisitely agonizing dance. And somewhere in between those two feelings, yet somehow distinct from them both, there was a THIRD sensation: the persistent throb of blue balls. There was a leaden ache at the core of each of his nuts, like some endless testicular migraine, and the horrible pressure only grew worse as his backed-up spunk factories were hammered into pancakes yet again by some cute female.

Speaking of which: if there was any saving grace for this whole nauseating experience, it was The Jiggle. As Sasha’s leg continued to rocket upwards, lifting Isaac off the ground for the second time in the last several minutes, he kept his eyes trained on her bare body, drinking in the way that her curves rippled and shifted. Maybe it was the weeks of cockteasing and denial talking, but FUCK she was hot — even for a fire-type. Even for someone who was currently booting his balls into his skull. Isaac wished he could grab her by the hips and press himself against her, hard and twitching and needy. It would have felt so, SO good to get between her legs…

…but instead, she had gotten between his. The Blaziken’s right leg stayed high for one long moment, her foot buried deep in Isaac’s crotch, his swollen spunk-makers bulging out from between her toeclaws in taut bubbles of nutmeat…and then she pulled her leg back, letting Isaac fall back to the earth again. His footpaws hit the ground with an audible THUD.

“…Nnn…!” gasped the Umbreon. The male struggled to find words, and his brain struggled to keep up with the flood of pain signals from his groin. His legs shook beneath him like jello, and his paws trembled at his sides. Fresh bursts of nausea continued to rip through his lower body, as his flattened gonads began reinflating into their usual round shapes. At the tip of his denied dick, a single bead of thickened cum glistened, forced to evacuate his testicles when they had been crushed to their structural limits. It was the only semen that had escaped his balls all month.

Sasha watched him. Her leg was still raised, her right knee high and bent, as though she might pivot her hips and snap yet another nut-shattering kick up into her pupil’s plums. Thankfully, the Blaziken stayed still…for now at least.

“Well?” the bird asked, looking back and forth between the male’s scrunched-up expression of agony and his angrily bobbling ballsac. “How was that?”

Though the maelstrom of male pain, Isaac managed to focus. Fortunately and unfortunately, the kick had gone almost exactly as he had visualized. He could still see her bare leg whipping forwards, and hear the SMACK of impact ringing in his ears. Most intensely, he could definitely still feel the raw ballpain radiating outwards from his scrambled pupmakers. FUCK did it feel like she was trying to neuter him. Another kick like that, and it seemed possible that his nuts might be reduced to peanut butter. That, or she’d punt the cum straight out of his over-stuffed spuds and all over her own naked body.

Isaac stared warily at the female’s leg, fighting through the pain to deliver a response. “That was…h-…harder than your first kick!” he croaked in protest.

“Ooh, way to pay attention!” Sasha grinned, rolling her ankle in a circle. “I mean…that one wasn’t full-force either, but it was definitely harder. 75%, maybe?”

The male let out a guttural groan — half frustrated at the extra abuse, half grateful to have survived the blow intact.

“But look at you!” the Blaziken continued proudly, planting her hands on her hips and finally lowering her foot to the ground. “Still standing! In fact, you look WAY steadier than you did after my first surprise kick. I think all that visualizing really helped you to prepare!”

“Nn?” It was true…for all that Isaac felt like his nervous system had just been fried, he WAS still surprisingly in control of his body. He exhaled slowly, feeling the tension vibrate through him from head to tail. His body was screaming at him to collapse into the fetal position, but Isaac refused to listen. Even when he had been staring at Sasha’s raised leg, wondering if his gonads had the fortitude to survive another fire-chicken nutshot, he realized that he had been preparing to lunge out of the way if necessary. Despite the agony of half-crushed balls, he had persevered.

Sasha watched him silently, raising one eyebrow.

“…Y-…yeah,” Isaac agreed finally, his voice still high and strained. “Yeah, I think it…I think it helped.”

Sasha beamed with pride. “Yes!” she squealed, briefly unable to contain her excitement. “Yes. Okay. That’s awesome. Success!” She stepped closer to give him a high-five.

“Success,” the Umbreon agreed, his balls aching fiercely. Shakily he raised his arm to meet hers. Their hands met with a SMACK, and Isaac winced as his balls throbbed with phantom pain.

“Nice.” The taller female looked down at him, so close now that her naked breasts were almost in his face. Her smile grew more sultry. “And of course, every success deserves a little reward…”

Isaac squeaked in surprise as Sasha curled her fingers around his dick, giving his length a firm squeeze. His erection had softened just slightly in the minute or so since she had booted his balls into his throat, but in her warm grip it immediately stiffened once more, throbbing in desperate need. Instinctively his paws flew to her hips, gripping her bare body as his legs wobbled beneath him.

“Wha…?” he gasped, scrabbling at her ass for support.

“Amber said I could give you a couple strokes as long as I don’t let you cum,” Sasha explained quietly, blushing a bit. She gave the male’s cock a few firm pumps, pressing her naked body even closer to his. “So uh, no cumming, alright? This is just a quick break before our next exercise.”

“Nnhhhhh,” the Umbreon moaned inarticulately. His face was practically between her tits, and he could feel the tip of his dick brushing up against her stomach. His balls churned with each stroke, stuffed and swollen, and aching in so many different ways.

The pace of Sasha’s stroking slowed. “…Aaaaand that ought to do, I think.” The female released her partner’s trembling erection, leaving a strand of precum that stretched from his cocktip to her forefinger.

Isaac exhaled in disappointment, his whole body sagging except for his diamond-hard dick. His nuts felt impossibly heavy. “…Nnrgh.”

But just as quickly, the Blaziken slid her hand even further southwards, wrapping her fingers around the neck of his nutbag. “Now…for our next exercise, I think we should visualize some ball-squeezing.” Her grip tightened — not enough to hurt yet, but oh-so-very threatening. “What do you think?”

With a groan, Isaac buried his muzzle in her chest. “Mh fggn BLLS,” the Umbreon whined, his voice dripping with agony and resignation.

The female smiled. “Let’s get to it, then.”