Challenge
Once again I got a little wilder with this one than I originally intended! But that’s fine, because Nidoking inspires a lot of tasty twists and turns! Such powerful sexy beasts, and I love the idea that they can do a whole bunch of fun things with those poisons of theirs. So when they want to go all out, who am I to say no?
OBLIGATORY CONTENT WARNING: This story contains sexual acts between two males changing to a male and V-male, rape, size difference, rough sex, domination/submission, gender shifting, inadvertent drugging, and natural triggers you really don’t want to poke.
SEQUEL POLL: I've got a new poll up! I would definitely appreciate it if you offered your input! It's changed to be a little simpler this time, so it shouldn't be as challenging to complete. Check out https://www.sofurry.com/view/1940335 for more information, or https://forms.gle/x93HRyG7gCSVRhr19 to just go to the survey itself!
“A shiny Pokémon? And you don't care what Pokémon you get in return?" It sounded way too good to be true to Willis - that sort of thing didn't happen every day, especially at a swap meet.
“I know...but I don't really care much about the coloring." The other trainer, Brian, a man apparently in his mid-thirties, rolled the Poké Ball in his hand. “Proth's been unhappy that I've decided to settle down...he feels cooped up around the house. He gave me permission to trade him so long as he was going to a trainer that was traveling around and active - doesn't even care that much about experience."
Willis wasn't worried about that, two years being a trainer and 19 in life was pretty solid experience in his eyes. Even if he didn't quite look the part - his boyish face with somewhat messy light brown hair that he had to sweep out of his like-colored eyes from time to time didn't give the impression of someone who'd been on the road for a while. “So I'm guessing you want a Pokémon that won't mind being in a stable place."
“Exactly. I don't want to trade for someone who has the same problem, that's not going to fix much. But if you have a Pokémon that's tired of traveling, I'm more than interested."
“I'd say I do." Willis took his own Poké Ball and sighed a bit. “I thought it was gonna be different with Carden...but he's never really gotten used to the whole 'traveling trainer' thing. It's hard to have a journey of growth when one of you doesn't want the journey part."
“I think everyone might be happier with this rearrangement," Brian agreed. “So what do you say? My Nidoking for your Ampharos?"
Willis hesitated; Carden had been by his side for two years, it was a bit tough to swallow the idea of parting with him. But, well, he was at the swap meet for a reason...if Carden would be happier like this, then it was probably a good idea. Dragging around a Pokémon that resented him wouldn't be very fair. “It's a deal."
———
The sun was setting as Willis settled back down off the beaten path. He hadn't stuck around long at the swap meet - he didn't want to start giving himself second thoughts. And he didn't want to meet his new partner in a chaotic setting like that, either. Better to be one-on-one, so he could really get to know this Proth. It was going to be an experience, bonding with a Pokémon that had been on the road longer than he had, probably far longer...but he felt reasonably sure that he could do it.
He clicked open the Poké Ball, and out come the Nidoking. Willis's first thought was surprise at his color - he knew the Nidoking was shiny, but he'd never seen a shiny Nidoking so he didn't know what to expect. Certainly not the sparkling blue that he was greeted with, reminding him of a Nidoqueen's colors instead. There was no doubt he was eye-catching - shiny Pokémon typically were, that was one reason they were sought after. The idea of having one was cool, but he had to remind himself that it was cosmetic - it wasn't like that was going to make him a more important trainer.
Proth looked down at him, almost like he was sizing him up...or making Willis feel small. Were Nidokings supposed to be as big as this? He stood well over Willis's head, and of course he was broad to match. Intimidating...Willis knew he would have to find a way to assert himself, make sure they both knew their places, or this could go downhill fast. He decided to try to introduce himself civilly, to show he wasn't cowed. “So, you're Proth...nice to meet you. I'm Willis, your new trainer."
“So I hear." That deep, growly voice spoke of quite a bit of power. “Looks like you're pretty green, though...you think you can keep up with me?"
“I've been traveling and training for two years. I may not be as experienced as you are, but I think I can hold my own."
“Mm. Well, I sure hope so. I wasn't exactly expecting to get stuck with a kid…"
“Hey! I'm nineteen, I'm not that young!"
“Younger than I am. Not nearly as battle-hardened, either. I'll be fine, though, so long as I'm not babysitting you."
Willis's expression flickered a bit. This wasn't going so well...true, Proth wasn't hostile, but he didn't exactly seem confident in his new trainer's capability. “Your trainer said you didn't care about experience, you just wanted to get out."
“I don't. Still care that you can handle yourself. I had enough trouble bailing Brian out of his stupid mistakes when he was younger, don't particularly care to do that again."
“...Fair enough. But you won't have to do that. I can take care of myself...heck, I've had to at times when my previous partner wasn't in the mood. I've been through a few things, I'm pretty sure I can handle what you or anyone else throws at me."
Proth grinned a bit. “Heh...bold words. Proof's in the pudding, though. Attitude's good, but some are tough talk, no show. I'm gonna have to see you standing up to your challenges like a man before I'm convinced."
Clearly, this wasn't going to be a simple thing...he had an expert, someone who wouldn't easily be convinced of his capability. Willis needed to show he wasn't going to be cowed by the Nidoking...directly asserting himself might help at least convince Proth that he had a streak in him. He straightened up and looked fearlessly into those bright eyes. “Heh...you're one to talk about manliness."
Proth's eyes widened, and Willis grinned a bit; maybe he had his angle. “Excuse me?"
“I mean, your colors...bright blue, nothing at all like the purple of a manly Nidoking...maybe I should be the one worried about you. You sure you're not a Nidoqueen trying to pass? Maybe got some horn extensions and all that...not that there's anything wrong with that, but can't say it screams manly to me, if you know what I'm g-"
He'd thought he'd rattled Proth, just a bit...it wasn't like he was trying to be nasty, just show he wasn't going to be talked down to, maybe put him on the defensive a bit and show that Willis could push back. He hadn't expected the Nidoking to grab him by the collar, lift him, and shove him against a tree. His eyes were narrowed at Willis, breaths getting deep. “Kid...you're either stupid as hell or you're just naïve. Either one isn't good for you."
“Ngh! P-proth! Wha-"
“You realize what you just did? You CHALLENGED a Nidoking's masculinity. That ain't just something we can let go...Nidokings have to respond to a challenge, to PROVE themselves...it's a physical response, I can't control it, you got me kicked into overdrive...and there's nothing to do except show you just how manly I AM."
Willis wanted to ask what he meant by that, but he found out before he had a chance to - his eyes widened as he started to see something emerging from Proth's crotch, something dark red and a lot bigger than he wanted to admit. And he was smelling something thick and tangy in the air, it could only be the Nidoking's musk. “W-wait! I'm-"
“You should probably just shut up." Proth's free hand snuck under Willis's shirt and pinned him from there, while the grabbing hand yanked away, easily tearing the shirt into tatters. Some of the fabric fell away, the parts pinned between his back and the tree thankfully stayed there as a mild buffer against the rough bark. Still, he was hardly thinking about that, given that he was starting to have a sinking feeling he knew what the 'challenge' was going to entail. He wasn't experienced on THIS front, and he wasn't anticipating having his first at the hands of a raging Nidoking! He tried to kick out, but all that got him was his shoes and socks torn off roughly, also essentially destroyed by those claws, and on the next kick his foot got jabbed with a spine on that chest, making him wince. It was like kicking a wall anyway, Proth outclassed him to a massive degree and there was no chance he was getting out of that this way.
Proth's eyes glittered triumphantly as he tore away the human's shorts, cleaving a large rip in his boxers at the same time. He let out a dark, growling laugh as he reached out and roughly groped Willis's crotch, making the human gasp as those clawed fingers molested his cock and balls through the thin fabric. “Rrr, hard already? Maybe you were trying to get some of this…"
“N-no fair...it's your...stupid musk…" Willis protested weakly. No, he knew full well why he was feeling aroused, when you were around a horny Nidoking it was almost impossible to avoid, he'd heard those stories before.
“Right, and you'll still be begging for more after I've dumped my load in you." Proth grabbed the fabric and tore it away, leaving Willis fully exposed. “Maybe I'll make you my bitch, turn you into a ravening cockslut in your horniest prime. Won't be calling me a weak male then…"
That should have been a terrifying prospect, Willis only starting to realize what he'd unleashed. Of course the Pokémon known as the apex of maleness would react badly to that, and there was a lot that he could do to a defenseless human! But...something was going on, he was starting to feel mildly dizzy, and the fear of the consequences was sort of dulled in him, while the excitement flush through his body was kicking into high gear. He wasn't really sure why, but in the heat of the moment, he couldn't really consider why that was...especially because just then Proth's free hand grabbed his leg and yanked it up, exposing his ass to that deep red dick, dotting with barbs that were jutting out and leaking fluid. His resistance had flagged, he was making no move to avert the inevitable.
And Proth took advantage. With a snarl, he rammed into Willis, not showing even the slightest bit of consideration for the human's inexperience. As that cock hilted forcefully in him, though, Willis let out not a cry of agony but a weak call of something like pleasure. Bizarrely, that huge thing clawing against his insides felt...unexpectedly good. It felt like it should have been painful, but he wasn't registering any pain at all, just a dull bliss that was slowly swelling higher.
“Yeah, that's right, sing for me, bitch," Proth growled lecherously, jerking out and slamming in again to elicit another one of those breathless cries. “Gonna show you how an alpha male fucks, you'll never question my manliness again…" His grip tightened on Willis, getting up very near his neck as he loomed closer, making sure he could thrust in with all the power he could muster. “Gonna make sure you know you can't NOT want it when I stick it in…"
That was a promise being fulfilled at the moment, apparently, as Willis was pushing what little bit he could into the thrusts already. Not that he was aware of it at all, the loopiness having hit fully, eyes rolled back a bit as he jerked mindlessly around, precum squirting from his overstimulated cock as his prostate was mashed. His cries were still rather airy but not restrained at all, it felt like he was literally being fucked silly the way it was making his mind get washed around every time he felt the Nidoking hilt. He couldn't have been aware of the toxin coursing through his system at that moment - the one that he'd inadvertently gotten injected into him when his foot had hit that barb, and had quickly rushed through his system with his rapid heartbeat. It had been a prime Nidoking cocktail, ramping up his lust and deadening anything that would get in the way of a wild sexual romp, including those pesky inhibitions. He couldn't really form the words, but every signal he was giving off was a wordless plea for more.
And more was just what he was getting, every second. The more Proth thrust, the more freely he moved, once he got into rhythm he was like a machine, fucking more quickly and efficiently than ever. His hand had shifted up to Willis's neck, not cutting his air off completely but making it just that little bit harder to breathe that imposed ferociously on the human, and in his addled mind made it all the more exciting. Under the spell of the Nidoking's musk, there was basically nothing about this he couldn't like - the sharp barbs clawing against his tight ass, the toxic fluids leaking into his body, the physical domination that put him squarely under Proth in every way, it was all adding to the throbbing in his dick and the waves of pleasure through his brain. It felt like he was on the verge of orgasm almost constantly, needing to get to that pinnacle but somehow never quite getting that proper push...another function of the poison he'd gotten earlier, making him last much longer for the ferocious Nidoking ravaging him at his will.
“Listen to you moan, slut, this must be fuckin' heaven for you," taunted Proth, his hot and sour breath washing over Willis's face as he leaned in a bit. “Gonna fill you up nice and full soon, bet you can't wait for that...you wanna feel that, don't you? Wanna get pumped up nice and full with my seed? Bet you're just HOPING I make you my eternal omega cumdump, aren't you?"
Willis wasn't really registering any of the words, just the powerful sentiment that was overpowering his uncomprehending mind. His addled subconscious had no problem making the decision for him, though. “Yes...do it...please…" the words slurred off his tongue, betraying his inebriated state, but Proth couldn't have given less of a shit about that.
“Hah, you got it, kid." He started rocking in harder and faster, pumping out plenty of chemicals through his barbs that were rapidly being absorbed into Willis's body, priming him for the main dose that was coming soon. The human's cries got higher-pitched and more boisterous as the pleasure romped up, bringing him closer to that pinnacle that he so sought. No real awareness or care about the potential consequences could reach through to him. All that was there was the lust and the desire to be pounded and filled, and the promise of overpowering pleasure that was just about there…
And then it hit, like a charging Tauros. His back arched and he cried out loud as he shot his load off, the fluid splattering all over both himself and Proth, even shooting up to their heads when his cock flopped up from the forceful impacts of Proth's body against his. His body clenched tightly, digging those barbs into his rear end further, getting more poison pumped into him and stimulating that alpha cock even more...a loud roar in his ears signaled the finale, and then he felt it, a massive deluge of toxin-laden seed pulsing into his bowels and filling him up rapidly. It left a buzz wherever it touched, a pleasant and desirable sensation that helped keep the understanding of what it was doing to him deadened. He was scarcely aware of the slimming of his frame, the slight loss of height and notable loss of mass, the shrinking of his cock and balls, and the mental changes coming with being an omega. All Willis knew was that being fucked and filled like this was the best thing he'd ever felt, and he worked to milk that toxic seed out of Proth and into his body, unwittingly accepting his fate.
Finally, Proth had emptied himself fully, and made a nice little bulge in the human's gut from the sheer volume of his seed. He pulled out of the human, letting some of the tainted seed leak out, unworried about that affecting anything - the dose had been more than enough to ensure that Willis wouldn't be capable of resisting him even a little. He let the human flop to the ground; Willis was panting and moaning, still feeling a weird heat coursing through him, his shrunken dick was still fully erect and not at all ready to rest despite the forceful orgasm. The drug was still fully in effect, maybe even more after the additional poisons had gone to work on him...his need for Proth was still so strong, even though his vision was blurry and he could only kind of see him.
“So, you learned your lesson yet, or do you need more convincing?" Proth's growl was very forceful, almost threatening. Which might have scared Willis if he was in his right mind...in his current state, though, that voice only encouraged him.
“I dunno, I think you could...stand to do some more assertion. I still feel like a man, even after getting fucked...you gotta make me feel like a bitch like you want, don't you?"
Proth could certainly hear the slur in the words, the obvious sign that Willis was out of it...and he very clearly didn't care. “Oh, you want to feel like a bitch instead of a man, do you? I can make THAT happen, for sure…"
“Ah...please, make it happen, I want to feel it, please…"
“You asked for it." Proth dropped over Willis's prone form and stabbed a barb directly into the human's cock, making him cry out. A sudden burn rushed through the human's gonads as another poison went to work on him...he squirmed around, but his arms were quickly pinned over his head by Proth, ensuring he couldn't do more than shift around a bit while his body was changed yet again. He didn't even really notice what was happening as lust and pain swirled around distractingly in his brain, but he could feel that burn shifting into his core, he was dimly aware that things were shifting around a bit inside him, but he didn't really have an understanding of it…
As the burn faded, the lust ramped up again, and he could feel the difference...he looked down his body, his eyes confirming what his body felt. His cock and balls had disappeared, replaced with a nice puffy drippy pussy that was showing his need the way that was natural. In his whacked-out mind, it looked oddly fitting on his slim body…
“Heh heh heh...like it?" Proth rumbled above him. “That's how manly I am...I can even erase every trace of manliness in you. Let's see how your body reacts to my cock NOW…" The Nidoking's free hand grabbed Willis's leg, the one holding his wrists pressed into the ground, ensuring the human was entirely trapped...and Willis couldn't have felt more aroused by the idea. He was about to get fucked by that thick barbed tool the way a female was...there was no more powerful assertion of maleness that his warped mind could come up with, and more and more that was what he really wanted.
Proth didn't go gentle or easy on him this time, either - he slammed his dick inside Willis fiercely, going in to a deep depth to break him open, his tip bumping up against that inner lock that wasn't going to hold out for long. Willis's cry was unimaginably euphoric, his rewired brain taking the brand-new experience and sensations and drinking them in, sending an explosion of pleasure through him...it felt almost like he'd just cum from that first thrust, his cunt was clenching around that huge thing and massaging it like it was trying to feel more. That burning need he'd been feeling was being sated by that fierce stretch, and he wanted it even deeper without even really understanding why.
It was sweet music to the Nidoking's ears, and Proth used that to fuel his lust even more. He started to hump in more fiercely, spraying his noxious precum all over that new snatch, tailoring it to respond more vigorously to him and let him in deeper. Every time Willis felt that thrust bump against something deep inside him he wanted more, he would have been pushing into it if he had any ability to. But he was entirely helpless under the sheer power that Proth had, the only thing that was going to happen was what the titanic creature desired...what a thrill that was for him!
Suddenly Proth bucked forward harder, and another cry came from Willis as the Nidoking finally hilted in him, his body having been suitably chemically influenced to yield to him. Now the barbs were scratching at his deepest recesses, easing the fire deep in there along with the male fluids that were spreading all around. They were mixing quite effectively with his own thin nectar that was smearing all over his insides with every climax Willis was getting. His back arched further, one of the few motions he could make, spreading himself as much as possible for Proth's wonderful cock.
“Listen to you fuckin' mewl, bitch...you really love this, don't you?" Proth's voice was deep and dripping with satisfaction. “Got a treat for you - once I cum in you, you'll be staying this way, too. Gonna be a proper bitch to a real male for all time...and this time I ain't even giving you the chance to back out, not that you'd take it. Since you belong to me, I'm calling the shots."
Again, Willis barely had any idea what was being said, all he knew was that he liked it and wanted it. The sentiment of the Nidoking being his master WAS coming through clearly, but being pumped full of Nidoking lust toxin only made that idea intensely appealing. His body seemed to agree, shuddering in yet another mini-climax that was getting more and more powerful by the thrust, his body priming for something much more momentous. It was clutching to that terrific dick, relishing the scratch of the barbs and the spray of precum that helped to make the burning need ebb and crest. Closer and closer to the pinnacle, he could almost taste it it was so close, or maybe that was the musk in the air, either one would do…
Even though he could feel it coming he couldn't be ready for it. Willis let out an orgasmic cry as it hit far harder than the previous one, making him rock and shake as his body was wracked with extreme pleasure, unleashing a torrent of liquid all over Proth's cock as it spasmed around him, trying to get him to join in and seal his fate. And Proth wasn't about to disappoint...his roar was even louder as he joined Willis, hilting his cock inside and unloading his powerful alpha semen into the human's womb, rapidly filling him and making him swell out more as the toxic cocktail spread and locked him in. It was like a switch flipped in Willis, turning out the lights on his old self-image and replacing it with the idealized version, the slutty omega V-male that served a powerful alpha male Nidoking that was practically pleasure incarnate. It brought his climax to new heights, renewing the pleasure assault that shook him as he took in the load that he was made to receive.
It was almost a disappointment when the bliss faded away, leaving him weary but satisfied. The burn in his loins had been somewhat sated at least, though how long that would last was anyone's guess. Proth finally released his limbs, slowly pulling his cock out and dragging his baleful barbs along Willis's passage as he did, forcing another shiver out of him. Another deluge of seed followed his exit, though plenty was still stuck inside Willis, keeping him looking noticeably rounded. Proth almost purred as he watched that sight from his new bitch. “That's more like it...now you know just how male I am, you'll never mistake these colors for anything else."
“Ah...y-yeah...you're the manliest male that ever was…" Willis panted, only halfway aware of what he was saying, but his brain knew enough to acknowledge that. “Ah...I'm yours, Proth…"
“Damn straight you are. Heh, you're really hopped up on me, aren't you? What say I fuck you 'til you go lights out and can sleep that off?"
“Y-yes, please...more…"
“Rrr, can't wait to hear you say that more…" The Nidoking picked up Willis and pinned him against the tree again, lining up his cock with that pussy once again. By the time they were done tonight, Willis would be intimately familiar with that cock in every one of his holes, and he would care about nothing more...
———
...At least until the next morning, when sobriety and the reality of what had happened truly sank in. Though, Willis couldn't say he was regretting it as much as he would have thought with a clear head...a side effect of all that poison reworking a few of the wires in his brain, though he would never fully know that. “Fuck...I can't believe that all really happened…" he said rather quietly, looking down at the reshaped body he was locked into.
“Sorry about that, but you DID kinda bring it on yourself." To Proth's credit, he actually sounded a little apologetic, though Willis couldn't miss the sound of satisfaction in his voice. “You put me in a state where I couldn't care about the consequences...or that you were high on me. Can't blame me for going all out."
“...No, I really can't. It was my fault for thinking I could just say anything and get away with it...well, you put me in my place there. Guess I'm not gonna be the one in charge in this partnership, am I?"
“Not even remotely," growled the Nidoking with a grin. “But at least you're dealing with it well...handling that challenge like a man. Shows you got some spunk in you like you claimed."
Willis gave a bit of a wry laugh. “Yeah, plenty of yours. And I'm guessing that's not gonna be the only one that fills me up…"
“Course not. You're gonna know the whole wide world of Pokémon cock before too long. And you're gonna love every second of it. Before you know it you're gonna be pleading with me to let you pump out an egg here and there...that's gonna be a treat for sure."
Willis had to wonder if it would be a treat for him, but somehow he had the feeling that Proth would get him to that point anyway. Just talking about this was starting to arouse him...well, this was his new normal, he was just going to have to get used to it. “I guess we'll find out when we get there. So...how about you keep showing me what it's like?"
Proth's grin widened, and Willis felt a growing heat in his body as the Nidoking loomed lecherously over him. “Oh, it'll be my PLEASURE...and yours, too…"