Warning: contains yaoi!

Lucario trembled in fear as he felt the needle entering through his arm, while he kept staring at his other arm, which had the Lucarionite in the Mega Stone bracelet his Trainer bought quite some time ago, especially aimed at defeating Uber's Mega-Scizor and silencing him and his gang for a while. He knew quite well that wasn't his rival's true name, names like those were nicknames they usually gave so that the yellows didn't really know how to track them down. For example, Kenta was called Omega by his friends, or should he say, followers? All of those were other Trainers that, apparently, didn't have as many resources to get a win outside the gym's leaders and feeders placed all around Sinnoh so that actual contenders could buy all sorts of medicine, food and especially drugs, just like the ones he was being injected, which would drive him berserk in a matter of minutes. Just in time for their fifth battle against Uber's Mega-Scizor, which he was willing to win no matter what if that made his Trainer happy.

"Lucario, return!" Kenta shouted aggressively as he retired the needle and got his Poké Ball.
His mates' almost feral cheering, in some way, was the last thing his ears caught before that Pokémon returned to his temporary prison. Inside the Ball, he remembered how attentive the boy was with him when they first met. That blonde, green-eyed human was gentle, hard-working and optimist, who said that every single Pokémon had its place on the battlefield. Maybe it was because he wasn't powerful enough to get purebred Pokémon since that kind boy who got him into battling just lasted that afternoon. Becoming rude, ambitious and arrogant in a matter of days wasn't normal at all, even though that fool Lucario, in his sane thoughts, still kept thinking it was those powerless followers of him, whose only function was to demoralize the opponent, if possible, turned him into a heartless person, wanting only, victory, victory and more victory. The substances he had been injected were taking effect in his psyche, making those rose-colored memories disappear and creating one only need. To kill his approaching opponent.

"Still thinking you might even touch me, Omega?" Uber teasingly said. "You don't stand a chance, you faggot".
"Uuuuuuh! Faggot! YOU FAGGOT!" His rival's followers shouted in a chaotic, yet insulting way, just as those gangs were expected to do.
"You're running out of luck today, idiot! I'm sending you along with Verlix, got it?!" Omega immediately got in the same game as his opponent.
"WITH VERLIX! TO ALOLA, WITH THE AW, SO POKÉMON LOVERS!".
If Kenta turned into a jerk with surrounded by that eerie atmosphere of insulting barks to either side, the other Trainer, whose scarce hair was dark and whose expression in those yellow eyes and face was terrifying at best, was clearly a bully by nature. That one wouldn't really doubt about posting some humiliated, teary opponent in social media. The blonde boy had already done that in the past, but by the time he ended up alone since he slept separately from the gang, sometimes regrets came to his mind, but he managed to ignore those. After all, he told them to stop, got as much money as he could and let his opponent run to the nearest Pokémon Center.

"Go, Scizor!".
"Go, Lucario!".
The ambient got even more eerie, even hellish, around all that youth hostel on the outskirts of Sunyshore City, as everyone stared at the two furious, bloodshot eyed Pokémon, aware of the fact lots of blood was gonna be spilled on the simple battlefield placed for Trainers like them to get conflicts aggravated. The worst of it, by far, was the fact that everyone was excited about getting one of the Pokémon mercilessly killed.
"MEGA EVOLUTION!" Both Trainers shouted at the same time, activating their Key Stones and nullifying any sign of will from those dangerous drugged Pokémon, stopping everything around them and beginning the battle.
As both Trainers shouted moves from their Pokémon's roster, it became totally clear that a single attack landing by accident on a human would instantly kill them, even their obsessive supporters who got more excited if the Pokémon they sided with hit the opponent, who didn't seem to be careful at all. The zombified monsters were even less careful, demonstrating as much as they could they were going to slash the other one if given the opportunity.

It was quite impressive any of the Pokémon could understand their livid Trainers, who were barking the moves they used in a barely comprehensive way for anyone else around. Almost as if they were drugged as well. Kenta did it because he was sick of that stupid Uber, his rival... because Scizor was having a really hard time. It really seemed like things had changed now that the blonde boy could Mega Evolve his best Pokémon.
"USE CLOSE COMBAT!" Omega shouted.
"IRON HEAD!".
That mad Lucario was proving to be dominant by the time the battle was getting closer to an end. While effective, the krab-like Pokémon moves didn't seem to be enough to keep up with the jackal. And then came the disaster for Uber.
"F-FUCK! SCIZOR, YOUR STUPID PINCERS!".
Even for that Mega Evolved Scizor, the battle was taking too long for him to resist lifting his pincers around. He and his arrogant Trainer were used to, given the right amount of stimulants injected, stomp their rivals mercilessly. Just like he had done with that Lucario in the past. However, having him Mega Evolved and showing the same killer instincts was way too much for that Pokémon to handle. And he was going to pay dearly for his Trainer's arrogance.

"CLOSE COMBAT AGAIN!" Kenta yelled with a terrifying mix of bloodlust and fury. "FINISH HIM!".
"RESPOND, SCIZOR!".
The almost skinhead Trainer's attempt to get his Pokémon back in the fight was useless. After the rain of punches that Scizor had to handle, he fell knocked out on the floor, his Mega Evolution canceled.
"FINISH HIM!".
The jackal gave another rain of punches to the already defeated Pokémon, who whined in pain as he was ruthlessly hit by his rival. Unable to stand, he slowly closed his yellow eyes... until his red body stopped moving at all. By the time Lucario stopped, in pure exhaustion, there was nothing that could be done for the krab-like Pokémon. He was... dead.
"VICTORYYYYYYYYYYYYYYYYYYYY!" Omega howled loudly.
No one had still recovered their sanity. As Kenta's followers were yelling victory to their rival's, those came up with all sorts of excuses to say that was worth nothing at all or even that the winner was a cheater, defending the raging Trainer, who was giving endless kicks to Scizor's corpse once Lucario got far enough, while everyone else just stared and did nothing to stop the madness.

However, everybody, except the blonde boy, ignored the jackal, who, still in his Mega Evolution condition, trembled like a leaf while trying to walk towards his Trainer, panting and whining loudly, but not enough for the rest to pay attention to him. Once Kenta realized it adrenaline stopped making the effect it had had in his mind before and during the whole combat, finally somewhat making sense of the situation.
"Good work... L-Lucario?!" He asked, his eyes still wide from the previous battle.
It still took him a while to figure out what was wrong, but after the Mega Evolution had become canceled and Lucario collapsed on the ground, the blonde-haired human realized he was begging for help. Actually... he could be near death. In fact, he didn't remember the exact quantities of stimulants that needle had. Were the numbers all safe or...?
"Lucario, return, quick!".
Once the Pokémon returned to his Poké Ball, Kenta began making a sprint to the nearest Pokémon Center he was aware of. There was only one problem with it: it was also a regular hospital, and those medical centers were filled with yellows. He didn't care, though, he couldn't lose his strongest Pokémon, at least not so easily.

"Kenta Tanaka!".
Even though it wasn't very loud, that angry young woman's voice could be understandable by every single person in the waiting room. Everyone stared at the blonde guy getting up with disdain, while he got even more nervous. The fact that he didn't know how the jackal was and that they knew he was a contender Trainer, after giving it away by refusing to give the receptionist personal data for a good while, almost starting a good argument with him, got him on his last nerve. Outside the waiting room, there were two furious nurses in white clothes, a boy and a girl.
"What?" He responded to their gestures with an arrogant expression.
"I advise you to quit doing your faces" the male nurse said. "You have a lot to explain, and the doctor isn't gonna stand any tantrums".
"And let's not mention what you've done to that other Trainer's Pokémon... What was his name?" The girl tilted his head, trying to recall what the other nurses had told them.

"Again, Fiona, the only thing they knew in the youth hostel was Uber, which doesn't tell us a lot. Apparently he disappeared shortly after KENTA" the boy repeated the Trainer's name so that everyone could hear it clearly "arrived at the emergency room with that Poké Ball in his hand".
"Whatever" Fiona shook those fuzzy thoughts off her mind. "Now, come with us. And don't dare protest!".
"I wanna...".
"What. Did. I. Tell. You".
The ponytail black-haired nurse was even scarier than ever before. It had worked so well that Omega's attitude broke off and a tad of fear showed on his face, as he clearly knew he was defenseless before those livid workers. Kenta followed them obediently through the corridor, eventually stopping in front of a wooden door, half-open and barely showed a blonde-mid-to-long-haired woman in those similar white clothes the nurses were wearing.
"Is he here?" She asked with a frown.
"Yes, doctor Williams" they both replied behind the still arrogant-looking Trainer.
"Let him in" her tone didn't change a bit from the one she used from the first sentence. "You'd better sit down, Omega ".

The way that doctor said his nickname was almost provocative, aimed to tease him, even if she wasn't joking at all and his full name wouldn't be a secret for anyone in that hospital. On the desk the boy sat in front of, there was a folder towards the woman's body.
"Well, Kenta, do you want me to start by the symptoms we detected or by the anomalies in the blood test?".
It was subtle, but the medic's tone had a bit of anger in it. He hadn't realized it, but she was doing the best to avoid start yelling at him. Especially after what they had found.
"Oh, sorry, I recalled Trainers like you just seemed to have a bare idea of what they're injecting their Pokémon" the woman continued sarcastically after she got no response. "Once I read the symptoms for you, you'll be able to figure out what results a drug test would have spat out".
Omega looked at that doctor in a defensive way as she got some of the papers out of the folder.

"So" she began reading the report, "as soon as your Pokémon got out of its Poké Ball, it grunts aggressively to everyone around, presenting excessive salivation. After just a minute of that, abnormal trembling is detected, to the point the subject can't stand on its feet. Fainted by the time it could be put on a stretcher ".
"May I continue for you, doctor?" Fiona asked as the doctor was talking more nervously.
"Y-yes..." The medic also mumbled in rage before the nurse relieved her.
"Well, after he got on the stretcher, and ignoring the injuries, we found hyperventilation, tachycardia, excessive sweating, continuous spasms on his limbs and some on the rest of his body. We had to put your Lucario an intravenous tract for preventing him from dehydrating and calming him down. And I don't know which ones, but we ran his blood sample and it returned positive for at least three drugs, all stimulants, even after it being altered by the sedatives" if the doctor was nervous, the nurse girl was livid by that point. It was amazing she wasn't yelling yet. "Just tell me, stupid kid: what the hell did you inject him? How do you have the balls to use whatever needles you're keeping in that bag in this time of the year?".

"Wait" the other nurse interrupted his partner. "Was that Lucario a male?".
"That's exactly the problem" she replied with anger.
"Oh, yeah, thanks for reminding me, Fiona" the doctor sounded calmer but still furious. "Do you know we're in heat season? You know, the time of the year where Pokémon...".
"YES, I DO!" Kenta replied rudely. "AND I KNOW THE STIMULANTS CAUSED...".
"Hey-hey-hey-hey-hey" the older woman, behind the desk, scolded the Trainer, as she was starting to lose it, "don't go all that bold there, kid, not after what you did to your Pokémon. The fact that we're in heat season made matters worse for that Lucario".
"The fuck?".
That finally made Dr. Williams get up from her chair, no longer holding back.
"Hadn't we acted quickly enough, that Pokémon would probably be DEAD, just like the other Pokémon you made him kill" she only paused once she noticed the Trainer's surprised face. "Yes! The youth hostel's owners told us about the incident and the corpse! Once we track down that Uber or whatever, we'll make him know Volkner is aware of this incident and has decided to close the gym for three weeks".

"Aw, c'mon, you're kidding!".
"She isn't, Kenta" Fiona said. "That should give you time to fully understand why shouldn't drug your Pokémon, and much less during heat".
"Pfft, you stupid yellows...".
"What did you call...?".
"Fiona, wait".
Even though she was as furious as the nurses, the doctor managed to somehow not completely lose it.
"Before you pull his hair out, he should know what heat season does on males" she said. "You can sum it up by saying it increases their aggressivity and sexual desire, but it also increases levels of hormones those needles are based on, thus making it super dangerous for them. The results in this blood test" she pointed at the folder "are a perfect example of that. He's so lucky to be alive after what you did".
"Now, get up, you're coming with us!" The other girl said.
"I wanna...!".
"Yes, you're gonna see your Lucario" the other boy interrupted Kenta, "and then you're gonna come back with us to hear what we have to say about him".

Meanwhile, Lucario was barely awake in one of that hospital's rooms, connected to several machines that monitored his condition and kept him correctly hydrated and calm. He had probably achieved his Trainer's desire, to kill that Scizor, although he did it while going insane, hence he remembered the incident vaguely. If that Pokémon didn't recall having gone through such a rough battle, he couldn't have found an explanation for his injuries. That didn't matter for him, though, that Lucario just wanted to see his Trainer. He felt so lonely, so sad, he had just enough energies to keep his eyes barely open, waiting for that door to open and show the blonde boy. Even with that sadness within him, his hope didn't die. And that canine was eventually compensated: Kenta had finally appeared, escorted by two familiar humans who had attended him while still under the effects of those drugs.
"Lucario..." The boy mumbled, getting closer to him along with the two nurses. "Are you okay?".

It was Kenta's voice, the one that he could recognize even when controlled by external impulses. Letting out a sad whine, he hugged the human's torso and began crying, begging for him to stay. It clearly wasn't an illusion, his body moved as he breathed, and that was enough for comforting him, even if he got no reaction from his dear Trainer. The one who became nuts when surrounded by all those jerks.
"It's okay, little one" he could hear a familiar female voice as he kept shedding tears on Kenta's shirt, also feeling a gentle rub on his head. It wasn't the boy who did it, though. "The nightmare is over, you can relax now...".
Yes, he could relax, now that he knew the Trainer wasn't gone, that he wasn't alone.
"Come outside when you're done".
It was another male voice who said that, probably from another nurse who looked after him once he arrived in the hospital. He fell asleep after some minutes, but not even that prevented him from noticing Kenta eventually walked away, and especially the fact that someone outside was yelling like crazy.

Even if he could spend a night with his gang, Kenta decided not to do so. No matter how defensive the Trainer looked before the nurses, the reprimand he had been given was actually leaving a mark on his thoughts, especially after he heard the same Lucario he had in front of crying desperately and after he felt that tight hug, that gave away the Pokémon wanted him to stay. He was fine now, but knowing what he had gone through, he felt... guilty. For the first time since he was a Trainer.
"If you care about your Pokémon, even in the slightest, you should release them all and forget about being a Trainer. You're so dangerous for their health!".
That definitely sounded like a yellow speech, but they usually attacked the Trainers and treated the Pokémon as if they were uncontrollable weapons. But those nurses... Especially the one who put his report paper into a shredder, and before he could say anything, that girl said:
"In this medical center, we protect Pokémon, not Trainers like you".

The more he thought about it, the more he realized he actually had been treated all of his Pokémon like living weapons, that could be easily replaced. He couldn't care less about those, other than how time-consuming it would be to buff another one if he lost one of them. But Lucario... He never refused to have those substances injected, unlike most of his Pokémon he had been training. And that was strange, considering how scared he looked when he put a needle on him.
"Do you even have an idea of how WE also suffer when taking care of Pokémon in that condition? Yes, we worry about those, way more than you Trainers seem to do, and that's another reason why everyone here hates dealing with guys like you! And we're not being shy about it anymore, not in this hospital at least!".
The way he treated his Pokémon... He had never considered it since that was how most Trainers, who weren't feeders placed for them to get money, trained them. After just a few needles, the excitement from battle promoted in ads and whatnot disappeared from their faces, and when not aggressive, they would look... rather indifferent.

However, that Lucario... He did want to win, and the reason was simple, even if Kenta didn't want to realize it: he loved his Trainer, ever since their paths crossed. That jackal wanted the boy to be happy, even at the expense of his sanity or his health. He had always been hating that gang of his, knowing those he didn't make him smile, rather they made him become an entirely different person. The same type of jerk he continuously fought, creating the need in him to battle for being the alpha male between them. Lucario just loved Kenta as he was, and he hated Omega, even though those were the same, and he knew losing for Omega would mean saddening Kenta.
"Hey, Lucario".
The jackal looked at the boy with curiosity.
"How do you feel... about battling?".
Even if he tried to reply, his response wouldn't make any sense for the boy. Besides, what sense did that make to ask? Kenta was the one on charge, after all. He couldn't protest even if he wanted to.

"You're having the injections... just for me, right?".
The Pokémon could just reply by nodding, and putting a paw on his chest, looking straight to his Trainer's green eyes.
"I sometimes think about the humiliations we do with others, but the... things like the battle from a few days ago... I can't do that to you. Not after...".
At first, Kenta didn't really understand why Lucario hugged him and cried like that upon seeing him, but once the nurses yelled all those things to him... He did get the Pokémon had been suffering greatly, unlike the rest. He had had a Pokémon severely injured from a battle before, but not like that jackal. It was either that or the fact other nurses had just beared it without protest. However, now he realized only that Lucario would beg for him to stay. And that...
"The things I've made you go through are just... too cruel. You don't deserve that, especially after how hard you try. Making YOU suffer like that isn't worth it".

Lucario tilted his head with a little smile, observing his pretty face, which he had seen become so dark when facing other contenders. At least he could enjoy that and hugging him... Or maybe more since he was in his time to mate... Or maybe not. Kenta had pulled out his Poké Ball, and knowing what he had been saying...
"From now on, you won't have to battle again".
He tried to protest, but the Trainer just shook his head.
"I don't mean you must just walk away, I'll be glad to have you around if that's what you want, but I'm not training you anymore. A good Trainer like me isn't what you deserve".
A blue light surrounded him, then Kenta got up and smashed the Poké Ball against the ground, stepping on it as well. He sat back down on the tree they were under and said:
"If you love me so much, then I guess I should respond back properly. By doing what I think it's best for you. Also... do you remember the Sir Aaron costume you saw once? I might buy it for you, just as compensation".

That Pokémon didn't really make any sense of Kenta's words beyond hearing respond back. The idea of that boy, even if he wasn't his Trainer anymore, having mutual feelings about him made him the happiest Lucario that could exist. He slowly crawled to the human, cuddling him lovingly as he wanted that pretty face closer to his.
"Now that I know for sure that being a wild Pokémon again doesn't change your feelings... I just can say... I'm sorry".
Having been released made his feelings even stronger, especially since he could now lose track of that boy. His desires were flooding his mind more persistently as well. Somehow, being in that Poké Ball prevented pheromones from kicking in, but after that, his male instincts were free to unleash. And the idea of pleasing his former Trainer was something he couldn't let go. When not being influenced by the gang, he could say the human was... quite handsome. But being in heat, he was his ideal mate. Sure, knotting females felt great, but he wanted to know how a human dick would feel inside his rear, especially once as big as Kenta's.

"Hey! Lu...!".
The Trainer got interrupted by a sloppy kiss that Lucario gave him. That feeling sent shivers through his whole body. He had never been kissed by someone else at will, rather he usually forced his way into girls' mouth and body as much as he could... And that gentle pressing felt way better than he thought a kiss would feel. He ended up kissing back just as lovingly, his face getting red in embarrassment. When the kiss broke, he could barely mumble:
"What did you...?".
Lucario just replied with a tender smile, as he began sniffing the boy while blushing as well, seeking that male scent which would probably be similar to his own, although not as strong as the Pokémon's. Things were getting quite hot between both of them... Until the jackal found what he wanted: his crotch. He nuzzled and gave it some slow licks, managing to somehow get a moan out of Kenta's mouth.
"D-do you even know what you're doing, buddy?" He panted out heavily, his eyes staring at that Lucario as if he was an alien.

That didn't stop the blue canine at all, though, who was quickly returning to face the Trainer's face tenderly. An instant later, he had pecked his lips again, hoping for the boy to respond back roughly. That didn't happen, so the now wild jackal decided to go a different route: his neck. As his nose and tongue worked carefully in stimulating it, his paw was locating his package in order to give it a good squeeze.
"Aaaaaaaaaaaaah..." Kenta groaned out lowly, his blush getting darker as he started feeling a little ache on his crotch. "G-get off... I need to...".
Not sure about whether the human wanted to do something, he needed to breathe, or whatever, Lucario decided to step back a little bit, enough for his boner to be visible for the Trainer, even if there wasn't a lot to see: only his tip poked out of his sheath slightly.
"Holy fuck... Haaaaaaaa...".
The boy was actually taking off all his clothes, overwhelmed by the stimulation he had just been given, showing his full body after a few seconds. It was just average, what a regular human teen would show at the end of puberty. Not only his muscles, but also his stiff shaft.

It wasn't like Lucario was disappointed by the size, as he jumped on it and began sucking it eagerly. However, while Kenta moaned out his strange enjoyment from having his dick wetted up, his former Pokémon proved to have a considerably bigger member than the human, which was a lot considering his former Trainer was way taller. Regardless, once he suckled the human shaft for some more time, the jackal stepped back and put in all fours, facing his ass to the boy's face while his tail wagged like crazy and he whined lowly in need.
"What the...?" The human couldn't believe his eyes. "Do you really want me to... breed you? That must be...".
The canine interrupted him by whining louder in need, almost as if he was a female in heat. He had been wanting to do it since he first saw Kenta pumping it in private while camping away from the gang.
"Well, if you want it soooooooooo badly..." The boy smirked, rubbing his cock softly. "What the heck, you're keeping me hard. In fact, you're so cute right now...".

The only response Lucario was willing to give was howling lowly and lustily, his blue and black face blushing as he slowly got harder, even though he did try not to show his erection, half fearing the Trainer would end up stepping back. Upon feeling a sudden slap on his lap, those fears vanished from his mind as he let out a needy moan.
"Heh, you're doing an even better job than most bitches you can pay for a round or two" Kenta commented in his cocky way, trying to show his Omega side off. "I just hope you can resist the rough pounding you're begging for, boy".
A satisfied smile drew on the jackal's face as he was mounted by the human, and he started making faces in pleasure as he felt his wet cock entering his ass, immediately thrusting back against it as he attempted to make things quicker and more pleasurable.
"Dang... It feels so damn tight..." The Trainer said as he hugged Lucario from behind tightly, then he moved his mouth to his big ear and whispered: "Now get ready to be bred".

It didn't even get close to Omega's rough way of demanding prostitutes to beg for him, but it was close to Kenta's tired-at-night, yet happy tone. That was making the canine howl and moan in pleasure like crazy, loving how he was being locked in place while being thrusted and hearing that boy's pants on his ear. In the meanwhile, his big doggy shaft was bouncing freely under his belly, his rear stretched around the human cock.
"Aaaaaaaaaaaaaah... Mmmmmmmmmmmm... Uuuuuuuuuuuh..." were the only sounds that jackal was able to make at all as his face contorted in bliss and his arms attempted to bring his former Trainer closer to him.
"Holy fuuuuuuuck..." The human groaned just as pleasurably. "Dammit, feels so good...".
He couldn't resist thrusting his throbbing member inside that Lucario even faster and rougher, trying to get more pleasure out of that dirty, forbidden act. Apart from getting way closer to his own climax, Kenta was managing to make the Pokémon whimper in pleasure and shed tears because of that overwhelming sensation he was being given.

The canine tried to warn the boy he was about to blow, but whatever taps that landed on his body only made him even more excited, making him cum first in a great orgasm.
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH!" He whined loudly as his milk landed on both his body and the Trainer's, squeezing his dick with his spasming ass unconciously.
"Fuuuuuuuuuuuuuuuuuck..." The human moaned out, releasing his load inside that tight ass while his heart was racing and his whole body was trembling in ecstasy.
Both males smiled at each other as they basked in the afterglow. However, that didn't last for long, as they were so tired that once they calmed down, their eyes started closing very quickly. Even though, Lucario's nose was still twitching slightly. Being a wild Pokémon again, his nostrils were very sensitive to heat again. Add to that the stimulants' effects hadn't completed disappeared, even if it wasn't even close to dangerous for him.

The jackal opened his eyes as he moaned lustfully, panting quite a lot along with his heavily twitching nose. He couldn't describe all the different scents that were tempting the canine to stuff his member into someone's ass and have an endless night of sex. That is if the strongest and most delicious smell didn't come right from his former Trainer, the one who had taken his virginity away. His ass didn't feel that pleasing anymore since the boy's cock wasn't hard at all, so he decided to pull it out of his rear.
"Aaaaaarrrrrr..." He growled lowly.
His own member was hard and throbbing, and the plethora of scents mixing right on his nose only made his desire even greater, making him even ache in need. Fortunately... He did have someone to have fun with, totally asleep before him. Lucario began wondering whether it would actually be a good idea to use Kenta's body in order to please himself, as he sniffed his neck slowly. He perfectly knew humping anything without consent could be dangerous, not to mention how badly the human would react to a Pokémon... actually raping him.

However, the jackal's reasoning gradually vanished from his mind, his nose now intoxicated by the asleep boy's delicious musk, to the point his mouth was drooling and he couldn't help growling lustfully. If anything, his chest's spike was preventing him from humping his former Trainer like crazy. The only pleasure he was getting was from rubbing his dick along his body slowly, searching for his rear in order to start humping away. Lucario did eventually find it, pushing himself just a little bit in order to know he was where he wanted.
"Aaaaaaaaah...".
The canine was surprised by that low moan, that came... exactly from the human's mouth, whose face was blushing quite a lot as his body's smell became more intense. That's when the Pokémon couldn't resist it anymore: he pumped himself roughly into Kenta's entrance, his feral, lusty sounds mixing with another low moan from his sleepy partner. It was at this point that he realized how easily he could advance inside the boy's ass, precisely because of his leaky dick, which was now stuffed and begging for more pleasure.

Lucario didn't hesitate in humping as fast and hard as he could, feeling the need of breeding so intensely, while letting out all sorts of pleasurable moans, growls, and huffs, staring at his former Trainer's pretty face and body. So slim, with those noticeable muscles, showing how fit he was... Totally able to resist a little horny bastard like himself. And yet his sleepy groans and his intense scent made the jackal want even more of his ass.
"Aaaarrf... Rrrrrrrrrr... Mmmmmmm... Oooooooh..." He growled and moaned in pleasure.
Kenta's body was also reacting well to those humps, thrusting back against his leaky canine shaft as drops of drool fell from his chin, his sight lost in desire as he gritted his teeth even harder and he pumped even harder against the human.
"Aaaaaaaaah... Oooooooooooh..." The boy moaned under him, still totally unconscious, but clearly enjoying the pounding on his ass.
The Pokémon's knot was starting to come out as he kept thrusting just as roughly as his own body demanded, letting out louder growls as he neared his climax. Suddenly, his greatly leaking dick felt like it was being squeezed, noticing after a good amount of humps that his former Trainer was already cumming.

"AAAAAAAAAAAAAAAARRR! OOOOOOOOOOOOOOOH!" The jackal howled in ecstasy, sticking his knot inside the clenching ass he had been pounding mercilessly.
Lucario's semen flooded Kenta's butthole as he was unable to thrust anymore, growling and huffing as he enjoyed his climax. After feeling his inner desires calm down enough for him to reason properly, a happy smile drew on his messy mouth, cuddling his former Trainer, the one he didn't want to leave behind, for any reason, as sweetly as a genuine human lover would do... Until he tried to pull out and felt a weird ache. All his attempts from then on to get his dick out of that ass were unsuccessful and leading to such an annoying sensation. In fact, he felt he was still ejaculating inside the human. If he couldn't unmount him, the jackal would clearly get caught after such a dirty act of the asleep boy. Thinking about Kenta not trusting him after having raped him wasn't something he wanted to think about, so he had to do something about it.

However, his hands... Were pulling his butt towards himself, even if he didn't do it consciously. Lucario finally gave up, knowing he couldn't go anywhere and thus he'd have to face the music for what he had done. He could offer his ass as a way of saying sorry, anyway. His former's Trainer's dick felt soooo good... That thought was enough for him to smile as his eyes became heavy again, wanting to get some sleep before the sun would rise.