“Hey Rowin, look what I made for you!” the little vulpix exclaimed enthusiastically. He hurriedly ran into the room and almost stumbled over his own tiny feet. As he stood directly in front of him, he proudly held up a big black collar. 

“Another collar for me? Really, Chichi?” Rowin said only mildly interested. 

“Yes, but not just any collar.”, the little fluff ball pouted, “This time I’ve given it a very special enchantment just for you.” 

Rowin skeptically raised an eyebrow, the large sylveon wasn’t convinced yet. “Oh, an enchantment you say? But it’s surely not like the last time where your damn collar made me horny for an entire week, right?” 

The vulpix jumped onto his lap and gave him a mysterious grin, “No, this one can do something much, much better.” 

“Alright, you’ve got my attention. What special ability does it have, Chichi?” he sighed with resignation. His little vulpix was a pretty good wizard. He actually earned most of their money by selling enchanted trinkets and apparel. However, Chichi was also very keen to experiment. He often came to Rowin to use him as his personal test subject, with varying success.

“I’ll guarantee you this will work and you’ll want to put it on immediately,” he teased. 

“Just, tell me what it does and I’ll decide whether it is as amazing as you claim it is,” the sylveon replied soberly.

The little vulpix wildly waved the collar right in front of his face and said, “I’ve been working on this for over a year now. You remember when you told me you regretted not being able to have cubs because, you know, we’re both males?” 

“What are you insinuating here?”

“If you wear this collar, you’ll be able to have cubs. As long as you wear it, your body will remain receptive and fertile. And once you’ve been fertilized, your body will do everything necessary to sustain the unborn. This is absolutely safe and there is no danger of doing something wrong at all!”

“And how do you know that it actually works?” the sylveon questioned him. This sounded almost too good to be true. 

”No worries, I’ve done some experimentation,” Chichi reassured him. “I’ve tested the collar on myself and nothing has gone wrong yet.” 

“Wait, does this mean that you are-” 

“What, pregnant? No, I just put it on and ran a few tests to guarantee that it’s safe to use. Haven’t tested whether it actually works, though. In the worst case, it just doesn’t work. But it certainly won’t hurt you. I wouldn’t show it to you if I weren’t absolutely sure about that!” 

”I just happen to remember a few cases where your stuff wasn’t as harmless as you told me,” Rowin interjected hesitantly. “Don’t you remember that one strengthening collar that caused my body to start bleeding? Or that tonic that knocked me out for an entire day?” 

“Look, I’m still sorry about that. And this is completely different, I promise! I mean, I’ve been refining this enchantment for several months now. It’s not the first time someone has done this. It has worked before and I’ve followed the guidelines as closely as possible.” 

“Alright, alright, I trust you. Just, don’t make me regret this, okay Chichi? Now, if I were to wear this collar, would I be able to have cubs with you?” 

“Yes, that’s correct. And you always wanted to have cubs, right?” 

“Yeah, but, I mean, this is a pretty big deal. I wrote this idea off a long time ago. It’s all a little sudden.” 

“Rowin, look at me. I know how desperately you want to become a father, or a mother, whatever. This is your chance!” 

The sylveon gave him a firm nod. “I really hope this works and I don’t get my hopes up for nothing,” he spoke and yanked the collar out of Chichi’s grip. Rowin quickly put the collar around his neck. He didn’t notice any change, but that wasn’t necessarily a bad thing. “Here you go. So, if I understand this correctly, we can have sex, you knock me up and nature just takes its course?” 

“Well, there is one issue though.” 

“Oh, now you tell me?!”

“Don’t worry, it’s nothing dangerous or bad. You’re right, your body is fertile now. However, the effect is only very slim. To put it in other words, having sex once or twice isn’t going to cut it. The collar’s enchantment requires you to have your insides covered by sperm for a prolonged amount of time. Only then it can slowly condition the tissue to actually become receptive enough to allow its fertilization. The whole thing can take days or weeks, unfortunately. And any progress may be undone if the tissue isn’t covered for some time.” 

Rowin huffed disappointed. “Okay, so, how are we going to do this?” 

“Luckily, I’ve prepared myself for this,” the vulpix told him with a devious grin. Chichi always wore long robes to let everyone know that he was a wizard. He also liked them more than normal pants. He dramatically bent forward, grabbed the seam of his midnight blue robe, and slowly lifted it up. 

Rowin gasped as he saw what the little vulpix had been hiding underneath. “How did you do this?” he asked and pointed at Chichi’s supersized genitals. Just a day ago, a set of snug, little testes and a cute, little four-inch cock had been in the same spot where there now was a gargantuan pair of balls and a fourteen-inch monstrosity of a dick. 

“Oh, I’ve changed it about two hours ago,” the vulpix replied coyly. 

“Were you always able to do this?”

“No, I just learned how to do this recently. Mending and transforming your own body is a lot harder than it looks.” 

“How are you even able to carry this much? That looks really heavy.” 

“Rowin, darling, I’m a wizard. Have you forgotten that already?” 

“Oh yeah, never mind. So, how does this help with anything?” 

“Larger organs, larger output, easier to knock you up. That’s not entirely true, there’s also some magic involved, but the only thing that matters is that this will get the job done. Say, you don’t have any plans for the next two weeks, do you?” 

“I mean there is...” Rowin began to speak, but then he vigorously shook his head. “You know what, I’ve just decided to take the next two weeks off.” 

“Nice, because we’re gonna need some time for this to work.”

They started right away. Rowin was getting incredibly excited and he just couldn’t stop grinning anymore. He was going to become a dad! Or a mom! Whatever! Chichi told him to crawl onto the bed and present himself on all fours. The sylveon happily tore off all his clothes and jumped onto the mattress. He quaked and brimmed with eager anticipation. The vulpix briefly left the room and came back with a large bottle of lube. He uncapped it and emptied a substantial amount over Rowin’s bare ass and his own monstrous cock. ”Chichi, I’ve got just a single question before we move on. Couldn’t you have just made your balls bigger but not your dick? Where does it help us here that you have a big dick?” 

“There are a couple of reasons why I’ve enlarged my cock. It just didn’t look right, big balls but only a small dick. And I also really wanted to have a big, fat cock,” Chichi explained surprisingly factually while he rubbed the slick liquid all over Rowin’s asshole. 

”Oh, fair enough. But be careful with that thing, alright?” Once the sylveon was well prepared, Chichi got into position. The little vulpix aligned his humongous shaft with his partner’s ready hole and slowly pushed it in. Of course, Rowin was surprised by how big it felt. He had used some similarly large toys, but he had never had a real cock of this size inside him. The sylveon had always been the bigger one of the two with his respectable eight inches of manhood. And now, the little vulpix had an even larger prick. Aided by lots of lube and Rowin’s experience, Chichi managed to push in most of his member. They savored the moment and both got used to it. The whole situation wasn’t only new for the sylveon, but for the vulpix as well. Never before had he felt such a tight hole, and it gave him a whole new level of pleasure.

Chichi grunted and squeaked as he pounded the sylveon with slow, imprecise thrusts. Sure, he had given himself the strength to handle his massive endowment, but he still had to learn to direct his new strength. But the smart, little vulpix was a quick learner. Struggling with his partner’s sheer size, Rowin grabbed a pillow, clutched it tightly, sank his fangs and claws into the soft fabric. His cute, tiny lover fucked his ass with deepening and passionate strokes, savored his snug, wet hole, and already prepared himself to give the sylveon the first of many loads. Encouraged and driven by overwhelming pleasure, Chichi came in just a few minutes. He gripped Rowin’s tail, rammed his cock deep into his anus, and blasted his hot cum into the big sylveon. 

“Yes, breed me!” the sylveon exclaimed. All the warm, sticky sperm splashing through him suddenly made him feel all fuzzy and elated like he had been drugged. His body responded to the hot filling completely on its own. He didn’t do anything willingly, his anal muscles contracted rhythmically, and started to suck the cum out of the vulpix dick. The force of those contractions was strong enough to pull the little male against his butt. His body was lusting for more of his partner’s warm essence and tugged on Chichi’s cock until he had spent every single drop of his virile load. All throughout his partner’s orgasm he felt a new type of pleasure wash through his mind that he had never felt before. The sylveon didn’t touch himself, but his cock just kept swelling and throbbing. His arousal was high enough to make his shaft leak a substantial amount of clear precum.

The little vulpix hadn’t had enough yet. With a horny growl unusually guttural for him, he spread the sylveon’s legs, grabbed his hips, and started plowing him with unbroken vigor. Now it was Rowin’s turn to cum and he didn’t hold back. Only a low, muffled grunt escaped his lips, but his body reacted ardently and unloaded his cum onto the sheets. The force of his orgasm made his cock swing and flail wildly. His seed was flung as far as to his pillow and up against his belly, coating his entire midriff with his own milky load. Chichi, however, didn’t hold back just because Rowin was cumming. No, he rammed his swollen rod through the convulsions and contractions of his climaxing lover’s sphincter. This felt even better than the first time, the little vulpix thought with a lustful, horny grin. He focused his powers to give him even more strength. Now he only had to think of moving and a strong force did all the work for him, pushing his pelvis back and forth. 

The sylveon grabbed his pillow even tighter and subsequently ripped it into pieces while his little partner bred his asshole. “Fuck, how are you doing this?” Rowin growled. Fortunately, the vulpix had taken the necessary precautions and enchanted the lube. Otherwise, he would have never been able to take a cock this big with such ferocity. Chichi drove it in with lewd, raunchy groans. Never before had he seen his cute, petite and so polite lover become such a ravenous beast.

Having stepped up the speed, it didn’t take the vulpix too long to cum again. Hot spurts of thick, heavy spunk were blasted into the large sylveon and he felt this very sudden and off-putting high again. “More, more, more!” he cried desperately. “I need more of your cum! Please, breed me harder!” He groaned lewdly as his asshole started contracting again. It milked Chichi dry, it pulled and tugged on his massive cock until the flow of his lover’s cum stopped. Now, with already two big creamy loads inside him, the midriff of the well-trained sylveon was noticeably bulging outward. Behind his back, the vulpix was getting ready for something. There was a sinister grin on his face the sylveon couldn’t see. All of a sudden, Rowin felt something move inside him without him or his partner moving. Chichi’s prick felt fuller, bigger, and more swollen and it stretched his ass even wider. “Hey, what are you doing?” he stammered in surprise. 

The vulpix giggled and purred, “You wanted more, so I’ll give you more.” Not only the vulpix’s dick expanded but also his already massive, oversized balls. They made a loud thud when they got big enough to hit the mattress and they still didn’t stop growing. His tiny partner was now sitting on them like on an exercise ball, his stubby legs rendered completely unusable at this point. He tried to stretch his little feet as far as he could, but his toes failed to touch the ground. “Get ready, fuckboy,” he laughed and started fucking him again. Now, it was completely impossible for Chichi to use his body’s musculature to penetrate Rowin. So he just did everything with magic. This had a couple of further benefits. Both of his paws were now free and he started fondling himself, played with his nipples, and slipped one finger into his ass. His body was moving on autopilot and it mechanically slammed his enlarged shaft into the large sylveon.

Chichi heard an unusual sound. Was Rowin moaning, he wondered. He usually never made such noises during sex, had he driven the big, manly sylveon to a point where he moaned like a slut? Rowin’s next groan was a lot louder. The sylveon was so aroused that he simply didn’t care anymore. He screamed with pleasure, his voice was loud, intense, and full of passion. “Yes, scream for me, my little sylveon slut!” the vulpix roared. ”Ah, fuck, I’m cumming!” Chichi filled his lover once more. The amounts of seed the little creature had ejected the first two times had already been ridiculous, but this time, with even bigger balls, the sheer volume of cum he pumped into the sorry sylveon was out of this world. It felt like someone had attached a hose to his ass and turned on the tap all the way. 

“More, MORE, MOREEE!” he bellowed before he succumbed to his own climax. The sylveon grabbed his twitching, spurting cock and jerked himself off with rapid, lusty strokes. His belly was now swelling in real-time with a constant gurgling and creaking. He felt his own belly fur touching his paw and it took him a second to realize what was going on. The sylveon looked beneath himself and watched the strange miracle unfold. Within two whole minutes, his little fluffy partner had turned him positively pregnant with cum. Rowin felt so incredibly full and stuffed. He felt amazing and wanted to stay like this forever.

Chichi quickly realized that it would be rather tedious to move around with such large testes. Now that they had served their purpose, he prepared to shrink them. He focused and reduced their size so he finally could stand on his feet again. Finally, the exhaustion set in. It was very tiring to work so much magic, and maybe he had overdone it a little. He managed to pull himself free with his remaining power and left behind a huge, pulsating gape. Rowin’s asshole had been stretched wide and Chichi could see all the way inside him. He looked around and searched for the largest butt plug he could find in the wide variety of their collection. It was a black monstrosity that was almost as big as the head of the little vulpix, but it was only barely big enough to keep his partner’s enlarged hole plugged. “There you go.”

The sylveon was just as exhausted from this wild romp as his little friend. He sluggishly rolled over on his back and proudly displayed his completely bloated, inflated belly. He was now filled with an immense amount of his best friend’s cum. “That’s enough for a start, don’t you think?” he whispered weakly. 

The vulpix nodded, “Yeah, maybe I’ve gotten carried away a bit and overdone it.” 

“No, don’t say that. That has been one of the best fucks I’ve ever had, Chichi. I don’t care how much stuff you had to do to make this work, but it was more than worth it. However, there’s one thing I need to ask you. There was this weird feeling that I experienced every time you came. What was that? A side effect of the collar?”

Chichi replied abashed, “Not a side effect. This was intended.” 

“Oh, really. Is there anything else you haven’t told me yet? Now would be a great time telling me, you know.” 

“No, this is the only one. Upon registering the partner’s orgasm, the collar makes sure that your body takes in as much cum as possible. It actually feels a bit like you’re having an orgasm yourself. However, thinking about it now I don’t think it was really necessary. I mean, a fraction of it would probably have done the job. You’re hopefully not mad at me for, well, going to extremes with you?” 

“Next time just tell me everything from the beginning, okay. I want to be able to trust you, Chichi.” 

“Yes, sorry. I’ll make sure to do so from now on, promise.” 

“Great!” Rowin stated with a warm smile. “Now come here. You look just as exhausted as I feel right now.”

“Gladly.”

The little vulpix got right next to him and snuggled into his side. He put one of his tiny paws on his partner’s inflated belly and stroked it softly. “It’s so full,” he whispered incredulously. 

“And all from you, Chichi.” 

“Sometimes, I get frightened by my own powers,” the fluffball admitted. 

“Oh, don’t think about it. Come here, let me pull you closer.” Rowin draped his large arm around the lithe figure. Feeling all warm and fuzzy, his little companion’s eyes got droopy and he snoozed off in a couple of minutes. After watching him sleep for a little longer, he closed his own eyes and patted his mildly sloshing midsection. “I hope you’re right about the collar,” he whispered silently to himself. “I hope this really works.” But he wouldn’t mind if it took a little longer to get pregnant from this. Rowin was already looking forward to a few more rounds of wild sex with his beloved, little vulpix.