Ada patiently watched as her trainer scrawled something down on a small notebook with that terrible handwriting of his, before producing a small high-tech device from his pocket. A pokégear, she had heard humans call it. Quite a marvel of technology, although the 'poké' part of the name had no reason to be there since it was a human invention. It boasted many useful functions, from the classic telephone to advanced calculators and maps. William pressed a sequence of buttons on the device to trigger the one utility he was interested in right now: a recorder. He cleared his voice, then began to speak into the gadget to test that it was working correctly.

Ada began to poke at him with a finger, growing impatient. "Are we starting already or what? What do you even need to use the recorder for?"

"To keep an account of this examination for documentation purposes, Ada, so that we may later scrutinize it to find if there are any avenues worth investigating further." William gave her a sidelong glance as he kept tinkering with his pokégear. "It's more practical this way, since I expect my hands will be busy. Or would you prefer me to stop in the middle of the action to scribble stuff down?"

"Oh god no. Do what you must, Will." Ada sat down on the grass, stretching out her legs as her tail wagged behind her. "So long as you bone me at the end."

William glared at her with tired eyes, holding back a sigh. "We've talked about this. I'm not merely boning you, Ada. This is supposed to be a systematic, scientific review of a pokémon's body in order to ascertain her compatibility with a human in a concupiscent context. Our goal is to figure out whether sex with a Braixen is safe for a human before your first heat arrives, now that you can still hold on to the rational part of your brain."

The pokémon laughed in that sneering yet sultry way that William both despised and adored. "That's a lot of cute justifications and pretexts, Will, but at the end of the day we're going to have sex. You can disguise it all you want in pretenses about furthering our understanding of human-pokémon interrelationships or whatever, but you just want to bone me. You can be honest, Will."

"I do want to bone you. I'm not pretending otherwise. But it's also important that we advance with caution and properly determine what is the safest way for us to engage in sex, or if it is safe at all to do so, specially in anticipation for your incoming first estrus in a few weeks." The human stashed his notebook into his bag, still holding onto his pokégear in his left, then stared at the Braixen, who was smiling widely. "I still can't believe you managed to convince me of this, Ada."

She raised her head high, her nose pointing up. "I am that great of an orator, plus having this explosive racy bod is for sure a nice boon." Her expression grew tamer next second, her maw flashing him an odd endearing smile. "Still, I am thankful that you're doing this for me, Will. It shows me that you think highly of me, highly enough to consider me as a potential mate. I understand there are risks involved due to our different species, but I trust our bond will allow us to overcome anything." She hurriedly looked aside. "Okay, that was a bit of an embarrassing spiel."

"No, that tender streak in you is charming too," he said as he crouched by her side to pet her head, which only made her flush redder. "And although I want to help you and make sure you won't suffer during your heat, it's not like I'm doing this only because of the inextinguishable good in my heart. I do find you attractive, and I want to do this too, in spite of everything."

Her embarrassment seemed to vanish in an instant, a knowing grin coming to her face. "See? I knew that at the end of the day you were doing this only because you wanted to bone me." She beckoned at him with a hand to come closer, and he obliged. "You've made me wait for too long, Will. Too long. But I know a good gentleman like you won't make a fair lady wait much longer."

Ada shifted around to adopt a more comfortable position, still sitting on her butt. William, who was starting to grow a little impatient too, was quick to kneel down by her side. "So where do I even start, Ada?"

"Wherever you want," she said with a giggle as one of her hands traveled down her chest and the other traveled across one of her legs. "All of this body is yours to enjoy, my dear trainer."

"No, but seriously, where do we start? Because it's preferable that we carry out this inspection of your body in a systematic, orderly fashion to make sure I'm not leaving anything important out."

"Ugh, always so businesslike!" She raised one of her toned legs and pressed her foot against the human's free hand. "There. Never a bad idea to start at the very bottom."

Almost on instinct, William began to caress the Braixen's pink paw pads. "Oh? Do you want a foot massage now?"

"Wouldn't mind one, certainly. Would get me in the mood." Ada chuckled, shoving her foot against his hand as he rubbed it. "Why do you not give me massages anymore, Will? You used to."

"Because you always end up moaning and it gets weird and uncomfortable fast."

"Oh, but we want it to get weird and uncomfortable this time."

"You know? Fair enough." William proceeded to offer the Braixen a gentle foot message with his right hand, all while holding the pokégear in his left and keeping it close to his face to speak to it. "A Braixen's hind paws are extraordinarily supple, with both her metacarpal and digital pads feeling soft as velvet to the touch, squishy like cushions. Caution is advised though, as kneading a Braixen's paw can lead to her nailed toes squirming and curling in excitement."

"Y-You don't need to put that on tape," Ada said with a slight fluster in her voice, although she made no effort to rescue her paws from the human's assault on them. "Maybe this was a bit of a mistake…"

William released the button to stop recording. "Be glad I didn't mention how cutely you were purring," he said before adding a short chuckle. "It's okay. This is just for private use for me to write down stuff later. No one else will get to hear it."

"No, not that. I meant the massage might have been a mistake." She cupped one of her heavy breasts from below, lifting it. "That got me hornier than I thought. Look how big my nipples got! This is entirely your fault, Will."

"Wait, wait. Let's respect the planned order. This is supposed to be a systematic, scientific review of a pokémon's body. I'm still dealing with your feet, you cannot ask me to immediately jump all the way up to your tits. I first have to check your legs, then your waist, your tail…"

"Well, then get going already!" Ada said before standing up in a rush and giving her own thigh a strong slap. She was never a patient one, and arousal only weakened her composure.

Still sitting down, William analyzed the legs in front of him, covered in thin black-fur. They were long compared to the Braixen's body, even if the pokémon herself wasn't as tall as him. "They always look so slender and smooth. Legs are particularly aesthetic, like a testimony to female beauty."

Ada looked down to her legs as a cute chuckle escaped her lips. "You have always been a leg kind of guy, Will. No surprises here. You don't spend this many years traveling with someone without learning what makes them tick."

William pointed a finger at her legs. "Long legs suggest good nutrition, while shorter legs are linked with a higher risk of obesity and cardiovascular problems. So long legs are a sign of good health! See? I'm not a degenerate for liking those meaty gams! I'm just obeying evolution's plan for us!"

Ada crouched with her hands on her knees, a gentle smile on her face. "You don't need to justify yourself. I'm cool with it. That just means one more body part to seduce you with, and judging by the spasms I'm noticing under your pants, it's working pretty well. This entire body is yours to enjoy, my dear trainer. So go on, touch them. I know you're dying to."

The human didn't need to be told twice. He grabbed her right foot once more to give her pads one last rub, then moved up to her slim ankle. To think showing this part of the body used to be considered risque in the far past! Next he checked her lower leg, reaching around to test her squishy calf, marveling at its softness. Lastly, he ascended beyond her knee towards her silken ebony thighs, rubbing them up and down as the Braixen gave a girlish giggle. They were not too thick, not too lean, and luscious all about. He wouldn't describe her legs as muscular, but they were elegantly toned, athletic. The Braixen wasn't a physical brawler, but she was agile and fit nonetheless. Overall, William regarded legs as being sensual rather than sexual, something to excite the imagination.

That was a juicy pair o' gams.

He spoke into his recorder while still keeping his free hand on her thigh. "It is well known that the fine delicate fur that covers a Braixen's legs grants them an appearance similar to that of black pantyhose, highlighting their curves as if they were wearing lingerie all the time. But they also feel like pantyhose — they have a smooth touch like that of silk, giving them a waxy feeling of sorts. The way the exquisite sable fur of a Brixen's legs contrasts with the brighter hues found over the rest of her body only serves to further accent her features and enhance the visual experience."

Ada began to caress the thigh that William wasn't already caressing. "Do you think that maybe my species evolved this high-contrast fur coloration as a way to bring attention to our groin areas and attract potential mates, specially humans?"

"Wouldn't surprise me. It's working on me, that's for sure." William slowly withdrew his hand from her leg, although he never stopped gawking at it. "Wait, why specially humans?"

Ada brought a finger to her orange eyes, and winked one of them at the sitting human. "Different species have different types of cone and rod cells in their eyes that allow them to view the world in different colors. It seems to me like my fur colors and patterns are uniquely suited for the specific form of trichromatic vision that humans sport. As a starter species that co-evolved with humans, it would be highly advantageous for us if our coloration worked in service of highlighting the location of our genital area for potential human mates."

"That sounds like a just-so story, but I choose to believe it. Further investigation required."

"So what part of me are you checking out next?" She slapped her thighs with each paw. "Or would you prefer that we took a quick rest and I gave you a thighjob?"

William gawked at those unblemished black stems in awe, imagining how it would feel to have them wrapped snugly around his hardening dick, enveloping him in that velvety fur that covered them. The tightness in his pants was starting to hurt a bit. "I would absolutely fucking love that, but let's not lose track of our goal here. We're trying to figure out to what extent it is safe for me to interact with the body of a fire-type. We don't have that much time until your first heat, do we? If you made me come right now we would probably have to leave it be for tonight."

Ada held her thighs together, letting out a disappointed whine. "Aw, you like my legs a lot, so I wanted to give you a bit of a reward for being so nice and always putting up with me. Maybe we can do that after my heat is over. Or during my heat. We will probably try every position under the sun during my heat."

"I will make sure to cash my prize later, then. But for now, we keep traveling upwards from your legs to… I'm guessing your hips and waist are next." He knelt by her side, letting his hands hover near her waist. "May I?"

"I get that I can injury you if I'm not careful, but I don't think the reverse is true, Will. I already told you that the entirety of this body is yours to fondle. Go ahead. No need to ask."

He wouldn't admit it not to hurt her, but William was a little apprehensive since he was dealing with a creature that could spawn fire if she lost control, and he was starting to draw too close to her genital area. Noticing his hesitation, Ada shook her hips once and that's all it took to get him in the mood again. William placed one hand on her slim waist and the other on her wide hips over her yellow fur-skirt. It's not like he didn't know she had a slender figure, but he hadn't really stopped to consider how feminine her frame was. Since Ada was such a strong and fierce fighter, it was easy to forget how dainty yet curvaceous her body actually was.

"Will, you don't need to feel my hips through my skirt," she said as she pulled on the strands of fur that covered her upper legs like a skirt, revealing her black-furred groin and her pink pussy beneath. "You're supposed to be cumming inside here in a few minutes if all goes well. So let's not be shy now."

William was in a bit of a shock upon seeing that slit of a soft color that contrasted with all the dark around it. It was dripping wet. Had she gotten this aroused just from rubbing her legs a little? Well, he couldn't stop now. William slipped his hand under her skirt to feel up her hips directly, making her squirm in delight in the process. Hidden under her skirt, her hips were covered in the same silken black fur that extended all over her legs. If her legs reminded him of pantyhose, her hips made him think of garter belts.

He withdrew his hand from her waist to grab his trusty pokégear, still massaging her hips under her skirt with the other as he recorded his voice. "The fine texture of the fur on a Braixen's legs extends all the way up to their hips, hidden under their furry yellow skirts. It seems a well-trained Braixen will develop a thin waist balanced by wide hips, which is often identified as an indicator of good health in humans." He stopped the recording, left the pokégear on the ground, and returned to caressing both her hips and waist at the same time. "But seriously, your waist-to-hip ratio is something absurd."

"Will, did you know that the waist-to-hip ratio is often used as a measure of fertility?"

"Uh, yes?"

"Food for thought."

William withdrew both of his hands and started to type some quick notes into his pokégear as he spoke. "You are a textbook example of an hourglass figure, Ada. Many human women would kill for a body like yours. And it's quite curious that you have such humanlike proportions, since you pokémon don't bear live young and instead lie eggs, so there should be no benefit to having wide hips."

Ada shook off her skirt to clean it, making sure to do it in a way where her trainer would get a peek at her nether regions. "We pokémon aren't exactly viviparous like you humans per se, but those 'eggs' we lay are closer to cradles so… Look, it's complicated. And regardless, I would argue that females of starter species like mine have adapted hourglass figures after eons of evolution precisely because it is the body shape that better appeals to human males. Attracting a human mate being an enormous evolutionary advantage for us and all." She turned around, moved her tail away, and placed both of her hands on her buttocks. "Which is also the reason why so many pokémon often develop such round butts. Although I guess perky butts are seen as attractive by most species."

William was a bit taken aback to be suddenly facing her cute derriere. The Braixen couldn't be said to have a large ass, but it was delightfully plump nonetheless. Ada lifted her skirt from behind to give William a clear view of her hindquarters as she looked back to him to gauge his reaction, shaking her bum coquettishly as her tail swayed from side to side. "Nice view, uh? Wanna plunder this booty, cap'n?"

The human began to fondle the twin apricots in front of him, which were so smooth and squishy that he could just sink his fingers into them. "It's not even that big."

She looked back, pouting. "Excuse me?"

He pushed her tail aside gently and traced a finger along her back, making her whole frame quiver. "But you've got a pretty feminine spine." While one of his hands petted her back, the other got ready to initiate the pokégear's record function. "Much like in humans, a pokémon's spinal curvature can offer the illusion of shapely buttocks. The attraction of most biped species to large bottoms could be explained due to this being an indicator for a healthy vertebral column, plus the potential benefits of an appropriately curved spine during childbirth."

"So I have a very bubbly butt, is what you're saying."

She once more began to shake her bum in front of him, the sway of her hips and swirling of her fur-skirt becoming hypnotic to him. "It is cute enough." William had to restrain himself from dropping down his pants, spreading her cheeks, and shoving it in. But his attention was next captured by her tail wagging adorably like a sensual pendulum. He couldn't possibly resist the temptation to shove one of his hands inside her bushy tail, making her wagging stop and coaxing an excited yelp out of the fox.

"O-Oh dear, you're more interested in my tail than in my ass?"

"Uh, kind of? It looks so fluffy."

"You know? I can work with that."

William felt a comfy warmth spread through his entire body as his hand rested inside the soft fuzz of her tail, careful not to hit against the branch stuck in it. The tail began to tenderly push back against his motions, as if cuddling his hand. This felt divine. The first thought that came to his mind was how nice it would feel to rest his head on this tail and take a snug nap on the best pillow in the world while the Braixen petted his head. The second thought was how good it would feel to hump his cock into her fluffy tail, how that fur prison would envelop and caress and rub against the head of his penis whenever he entered it. The duality of man.

And then the Braixen began to actually rub her tail over his groin. "Fancy a tailjob, handsome?"

"Yes, absolutely. But that's not why we are here for, Ada. I'm supposed to explore your body to gauge our compatibility."

"Then I am supposed to explore your body too! Don't think I haven't noticed that painful-looking bulge under your pants! I think it's about time I got to fondle you for once."

"That is… kind of fair, I guess."

So soon as Ada received verbal permission, because that mumbling totally counted as verbal permission, it took the Braixen all of three seconds to grab the wand in her tail and focus her mind's energy thorough it to exert her telekinesis on the human's clothing, taking down both his pants and underwear at the same time in a sweeping motion, leaving him naked from the waist down. He covered his nether region with his hands on instinct, more out of surprise than embarrassment.

Ada grunted playfully. "Either you move your hands away, or I slap them off."

William gulped. In all truth this was a little embarrassing, but he didn't want to leave her hanging. He moved his hands away to reveal his full length. "Look at this behemoth."

Ada discarded her wand, to retrieve it later, then got on her knees to give it a closer look, her mouth agape and slightly salivating. "Whoa… It is m-my trainer's cock. I really have it in front of me…"

Okay. He was expecting her to tease him or taunt him, so her earnest reaction kind of caught him unguarded. Somehow this was more embarrassing that if she had outright mocked him. "Glad you think I have a cool cock, I guess."

Without another word, Ada grasped his shaft in her white-furred hands, forcing a small cry out of him. The first thing he noticed was how warm her hands were. Not uncomfortably so, but far hotter than human hands, or most pokémon hands for that matter. They felt more delicate than he had anticipated too.

"Ada?" William cried her name, but the Braixen didn't react to his voice, instead rubbing her fingers all over his length as she gaped at the succulent treat before her. "Ada? Are you there?"

"U-Uh?" Ada hurriedly looked up to him, accidentally pressing a little too hard against him with her hands for a second. "S-Sorry. I got a little carried away here. I mean — I have my trainer's dick in my hands! I feel so powerful and so goddamn sexy and — u-uh, it's a starter thing, you wouldn't get it, Will." She looked down to his rod again, her gaze voracious. "So how are you liking the handjob? I, uh, just wanted to check that the warmth of my hands wasn't too much for you. Totally in the interest of science, you see."

"O-Oh, that's pretty good, yes. But should we be doing this? I haven't finished exploring your body to ensure it is safe for us to do this."

"Well, we see now that my hands are safe. Oh, and you've also checked my legs and tail, so we can use those too!" Ada removed her hands from his penis, who suddenly felt really cold, and then leapt at him to push his body down onto the grass below until William was lying down with the Braixen sitting on top of him, Ada's legs surrounding his still hardened but confused member. She tilted her head as she looked down to him, worry painted all over her face. "I didn't push you too hard, did I? I got a little too excited there."

"I'm good." William lifted his torso, lifting himself up with his arms, but the Braixen was immobilizing his legs so he couldn't move those. "But, uh, what are you doing exactly, Ada?"

Ada, sitting on his lap, opened her legs wide to give him a nice view of her moist pussy and then closed them again around his schlong, holding it in a tight clasp between her thighs. "What am I doing? Testing what we can and cannot do." She began to thrust away, humping her upper legs against the penis trapped in between. A deep moan escaped the human as he felt the juicy limbs stimulating the sensitive skin of his penis. "Penetrative sex might be dangerous just yet, so I figured we could start with intercrural to get your body acclimated to my body's high temperature. I promised you a thighjob, remember?"

William gave a single slow nod, and the Braixen began to speed up. He wasn't entirely sure if this was a good idea or not, but it felt too good to stop now. And Ada was right that this could help him get accustomed to a fire-type's high body heat before engaging in more intimate sexual practices that could prove riskier. Rubbing her legs should be relatively safe.

William's face went pale when he noticed Ada bringing one of her paws down to rub the head of his cock while continuing the assault of her silken thighs. He threw his head back, screaming out. He was just now discovering that his young body could feel this kind of pressure.

Ada began to speak in a whisper. "My legs, my hands… oh, we should test my tail too." The hand that was massaging his cockhead plunged all the way down to his testicles to fondle them, her tail taking its previous place instead on the top. Her fuzzy, voluminous tail was flexible enough for her to shove it to the front and use it to cover the human's dick as it gently rubbed its tip before she began to thrust her tail down and up his length in between her thighs.

The human wasn't certain if the scene happening before him was taking place in a dream or reality. The Braixen was playing with his balls using one of her hands, careful not to scratch him with her sharp claws, and also rubbing her fingers over the base of his penis. A little higher up, her delectable thighs were constantly smashing and rubbing against his rigid shaft, assaulting him from all sides with thin black fur as if made of the finest satin. And lastly, even higher up, her tail kissed the twitching head of his penis and swept around it, then absorbing the top of his cock into this impossibly smooth and comfy prison of fur and warmth, coaxing pre-cum out of him, which her receptive tail gladly soaked up. Balls, shaft and head being simultaneously attacked by paw, thigh and tail.

Other than the unimaginable pleasure that was rendering him speechless, the other sensation that jumped out to William was one of intense warmth. Ada's hand and legs were hot, which in turn made his testicles and shaft sweat like they were in an oven, although the sensation wasn't entirely uncomfortable. Moreover, the inside of her tail was blazing hot due to the high volume of fur and the fact that she was a fire-type. The way her tail's fur squeezed his dick and flooded him with steamy heat made him wonder if her vagina would feel similar, but even more intense. If so, this was probably decent practice for the real test. He needed to take a moment to throw away his shirt, as every time he humped into that inviting tail he felt another host of sweat drops cover his forehead.

Ada needed to employ an inordinate amount of self-control to keep herself from shoving that enticing cock trapped between her thighs into her leaking puss. Her vagina was desperately crying out for her trainer, for her male, but the rational part of her mind didn't want to risk hurting him. It was however becoming too much to bear for the young, inexperienced pokémon, so she threw one of her paws into her loins and began to finger herself to keep her lust in check, while also lifting her thighs a little so that they could also rub against her clit.

Now that they had reached a good pace, Ada figured it was about time they tested the limits of the human body. The final goal was to later have that delicious penis buried deep inside of her, but they would need to prepare first. When a human partnered with a pokémon for years, they would develop a natural resistance to any hazards related to that pokémon. That's how you got humans that could ride a Rapidash without burning, hug a Muk without being poisoned, or touch a Rotom without getting shocked. The exact causal mechanics behind this behavior were a mystery to the pokémon scientific community, but all that mattered to Ada was that it was possible for the human body to adapt to a pokémon if they were bound by a strong tie. But she had to test the waters first.

Tail Whip, Agility, Fire Punch. Those are three moves she had learned and employed in battle at one time or another, and perhaps she could repurpose them to help William acclimatize to her body heat. For his cockhead she used Tail Whip, shaking her tail faster to produce additional heat as she rubbed him all around. For his shaft she used Agility, increasing the speed at which she humped him with her thighs, heating his rod up. And for his testicles she used a very, very light variation of Fire Punch where she kindled only the tips of her fingers to transmit a bit of extra heat to his scrotum. She had a lot of practice with each of these moves, so she trusted this would be safe. William groaned at first as the calescent coat enveloped his full length from base to tip, but he soon became accustomed to it. It was hot, but he could take it.

William focused his gaze ahead. The sight of his beloved Braixen partner, his best friend for years, masturbating fervidly in front of him while fondling his balls, giving him a tailjob, and simultaneously rubbing her thighs against his cock and against her clit sent William over the edge. This was too much. Not even his best fantasies were this degenerate. It was so hard to hold back his urge to just plunge his dick deep into that needy damp hole in front of him, and he knew the loyal Braixen would never say no, she would just cry out his name in pleasure. Goodness, she was probably doing this on purpose to incite him, the crafty vixen.

"Ada, we should be stopping now. I'm really close."

"Stop?" Ada slowed down for a second, confused, but soon recovered her normal pace. "Wait, did you think I was stimulating you to the edge of climax to later make you pull out and cum on the grass or something?"

"Uh… yes?"

"Uh, no." She sped up her pace in a very obvious fashion. "Honestly, it is kind of cute how unexpectedly innocent you can be sometimes, Will."

His hips were shaking uncontrollably and he knew he wouldn't endure much more. "B-But then I will come into your tail and make it sticky?"

"Leave the logistics to me! Just enjoy the ride!"

It's not like William could possibly resist for much longer even if he wanted to, so he figured he might as well give in. The spasms of his cock grew in intensity and frequency as if it were trying to escape this blazing prison of pleasure, but the vixen would offer no reprieve. William cried out Ada's name as he glanced up to the skies. He could feel the hot hand of the Braixen kneading his balls and pushing his seed towards his shaft. He could feel her squishy thighs thrusting upwards as they held his member in a tight lock, forcing his seed to travel up in rhythm with her thrusts. And he could feel her warm and cozy tail kissing and sucking on the tip of his manhood, sleek furs tickling the sensitive head of his cock until he felt his seed burst out in a series of massive spurts, tainting the inside of her tail white. Her fluffy tail kept cuddling and fondling his penis almost to the point of overstimulation, coaxing load after load out of him, the high volume of semen eventually dripping down from her tail onto her thighs.

By the time it was over her tail was drenched in dripping white and her thighs were covered in erotic splatters. The fox kept fingering herself, and in a few more seconds she would reach her own climax, which was less explosive but still managed to capture William's entire attention while in the aftermath of his own. Then, a few seconds of silence were spent in the glorious afterglow of their first sexual encounter. They had done it. There was no going back now. Human and pokémon, engaged for the first time in the most fervent of unions.

William needed a brief moment to rest. At least there was no way the Braixen wanted to continue for the night, right…?