Chapter Text
On the south western corner of the Kanto region, slightly north of the small settlement known as Pallet Town we find a familiar sight.
“Come on Pikachu! Please Listen to me!” yelled an annoyed Ash Ketchum as he stared at his starter pokemon, a rebellious male Pikachu that he had dragged all the way out before letting it go and watching it run up a tree.
Ash himself was admittedly an attractive young man. He stood at 5’7” with a lean muscular build and tan skin. He had decent muscles on his arms and legs and a toned stomach, however he did have a set of abnormally big round pecs with large perky nipples, and a matching plump bubble butt. Both had gotten him plenty of ridicule growing up by his peers, especially one Gary Oak, but he did his best to ignore it. He also sported a surprisingly large 15 inch long 4 inch thick dick with a pair of large round 10 inch diameter balls, though he did his best to hide him since he feared getting bullied because of them as well. He had amber eyes, spiky black hair, and a set of Z-shaped marks on his cheeks. He wore a tight black shirt that hugged his ample pecs tightly, a short-sleeved open blue jacket, long jeans that did little to hide his fat ass, a set of black and white sneakers, and black fingerless gloves. Lastly he wore a red and white cap with a green mark on the front.
“Pika,” the Electric type pokemon huffed, ignoring Ash as it sat up on the tree branch. The tree was too tall and skinny for Ash to try and climb up after it.
“Fine!” Ash yelled angrily. “I’ll just catch a Pokemon myself!” He had tried to catch a wild Rattata and Pidgey, both of which had run away and smacked the pokeball away respectively. Angrily, Ash decided to try throwing a rock to ‘weaken’ the next pokemon he saw. He spotted a particular rock and picked it up. “There this should-huh?”
Ash stopped his actions when he noticed that the rock he had grabbed was no ordinary pebble. It was a crystalline dark purple stone with a glowing pink heart-shaped center.
“What kind of stone is this?” Ash asked in confusion. Pikachu looked over to Ash and saw the stone in his hand, curious about it as well. Suddenly, the stone’s soft glow began to brighten, and an aura of purple/pink energy spread from the stone onto Ash. “H-Hey!” Ash said, trying to throw the stone away in reaction, but it was mysteriously stuck to his hand. “W-What’s going on?!” The stone’s energy quickly spread from his hand to all over his body and infused into him. Once it finished, the stone dulled, turning pitch black and then crumbling to dust in Ash’s hand. “What was that abou-HNG!!!”
“Pikapi?” Pikachu said, curious about the stone but caught off guard by Ash’s sudden grunting. He did notice that the bulge in Ash’s pants was starting to get bigger.
“F-Fuck! W-What’s happening to me?!” Ash gasped, feeling an intense heat well up inside him unlike anything he had ever felt before. His body began to sweat, but the biggest point of tension was centered directly in his crotch. His dick was getting hard, so hard that it was actually somewhat painful, which was doubled because of its restrained state inside his pants. “N-Need to g-get free!” While under normal circumstances, Ash would never do such a thing, the overwhelming need to release was taking over his rational thinking. Ash fiddled with his pants, trying desperately to get free before finally undoing the zipper and lowing his pants and underwear to let his hefty cock spring free.
Pikachu went wide eyed at the sight of Ash stripping down out in the open. He knew that humans were finicky about being naked out in the open, which had always confused him, so it was quite the surprise to see Ash do such a thing.
“S-So h-hard,” Ash gasped out, his cock feeling like it was on the verge of release. His right hand went down and grasped the engorged veiny member, causing Ash to throw his head back and moan from the sensitivity. Even so, Ash knew he needed to cum, nothing else mattered in his over-aroused mind at the moment. With that, he started jerking himself off, letting out needy moans and gasps as he did so.
Pikachu watched with bated curiosity as Ash pumped his huge length out in the open like this. He had never seen a penis so big except on some fully evolved Pokemon that were in their mating seasons, and he definitely has not expected a human to have such a huge one. For some reason, Pikachu found himself unable to look away from Ash as he jerked off.
“Nnnngh!” Ash grunted as his hand started moving faster along his length. The raven haired male was in such need for release. Whatever force caused this intense arousal drive Ash wild and he felt like if he didn’t cum, he would explode! He had taken to using both hands to jerk himself off, his hands causing much friction along his length. As he pumping his length, he felt himself getting closer and closer to release. “Nnnnngh! C-Cum!” He gasped loudly. “G-Gonna C-C-CUM!!!”
Like an out of control firehose, Ash’s cock unloaded a thick stream of hot sticky white cum. The streak of spunk jettisoned across the air, and ended up hitting Pikachu directly in the face!
“PIKA!” Pikachu screamed as he was hit in the face by Ash’s projectile ejaculation. The electric mouse felt like he was struck by a stronger than normal Water Gyn attack, his face being covered in the white splooge. Some of it got into his mouth, and he inadvertently swallowed, but found it didn’t taste as bad. In fact, the electric type found Ash’s cum surprisingly good! After wiping the seed off his face, Pikachu took it into his mouth and swallowed it. “Chaaa~” Pikachu coed as he savored the cum.
“Oh…fuck that felt good,” Ash said, moaning in relief after finally managing to cum. With his arousal momentarily cleared, Ash realized what he had just done. “Wait…What the heck is wrong with me?! Why did I start jacking off like that?!” He saw the streak of cum that had landed on the ground, and saw Pikachu cleaning himself of the remaining seed. “Oh my gosh! I’m so sorry, Pikachu! I don’t know what came over me!”
“Pika-Pika,” Pikachu said, not really caring about Ash’s apologies. The electric type pokemon was more interested in how good Ash’s cum had tasted and was curious if he could get more. Suddenly, Pikachu felt a random surge of energy come from within. “Pi? P-Pikachu!”
“H-Huh?” Ash said as he turned towards his starter Pokemon. Pikachu was panting heavily as a purple/pink glow surrounded its body. “P-Pikachu? A-Are you alright?” He asked worriedly for his starter pokemon.
Pikachu panted heavily, closing its eyes as it struggled to stand the energy that was coursing through it. The glow covered its entire body, making it hard for Ash to see anything other than Pikachu’s general shape. He did however see Pikachu wobble and fall from the branch towards the ground.
“Pikachu!” Ash cried out, rushing quickly to catch the glowing pokemon in his arms. “I gotcha buddy,” he said worriedly, holding the glowing pokemon in his arms.
“Pi-Pi-PIKACHU!” Pikachu screamed as the energy inside it exploded, and its entire body began to change before Ash’s eyes.
Ash stared in both shock and awe as he watched Pikachu’s body change within his arms. For a second, he almost thought it was evolution, but something about this felt different. Pikachu’s entire body grew and stretched, quickly changing from the small mouse form he had before. Its arms and legs lengthened, its torso stretched and grew, its head became bigger and rounder with a thinning neck, and its tail and ear became bigger as well. Ash had to adjust his arms to keep a better hold of his transforming pokemon.
Once it seemed that the transformations had settled and stopped, the glowing aura that surrounded Pikachu began to dim, showing off his new body better. Ash’s eyes went wide as he stared at pokemon in his arms that had been his starter.
Pikachu had gone from a cute small mouse pokemon and had changed into something different. He was now 4’9” and had an almost humanoid body shape with yellow fur all over his body. He had kept his long pointed ears with black tips, round red cheek-sacks that distributed electricity, brown stripes on his back, and a large lightning bolt-shaped tail which had grown to 4 feet long. Those were the only parts to remain relatively the same as the rest of his body had changed. His head was now rounder with a thin neck beneath it and he had spiky light-blonde hair with large bangs in the front. His arms had lengthened into lean forms with hand-like paws, his legs had become longer with thick thighs and three-toed feet, he had a lean torso and this waist, wide hips with a large bubble booty, and a shocking yellow 10 inch long 4 inch thick dick with a red head and a pair of yellow 5 inch diameter nuts.
As Ash stared at his transformed pokemon, Pikachu’s eyes fluttered open. The brown orbs looked the same as before. “Pikapi?” he said as he recognized Ash.
“P-Pikachu?” Ash said, stunned by how his starter pokemon had transformed. He was trying hard not to stare at Pikachu’s shockingly attractive body, which was resulting in him blushing heavily. “H-How do you feel bud?”
“Pika,” Pikachu said, huffing slightly as a pink glow surrounded its eyes. “Pikachu!”
“H-Huh-MMPHMPHM!!!?” Ash’s confusion was quickly silenced with shock as Pikachu reached up and slammed his lips against Ash’s. Ash was so caught off by the sudden kiss that he fell backwards, landing on the ground with Pikachu on top of him, still kissing him. Ash tried to move, but Pikachu had pinned him down, using his new large body mass to keep his stunned trainer pinned.
Pikachu kissed Ash passionately, grinding his body against his trainer’s. His yellow dick became rock hard and rubbed against Ash’s half-limp member, causing it to re-harden. Pikachu’s paw-like hands reached under Ash’s shirt, snaking up his abdomen before reaching his pecs and giving the large chest muscles a firm squeeze.
“MMHHMM!!!” Ash bucked as he felt Pikachu squeeze his tits. Not only were they big, but they were also very sensitive. Pikachu’s small hands groped and squeezed the round pecs, teasing the hardening nipples with his pointed thumbs. That along with the grinding of Pikachu’s dick against his own was making Ash’s mind swirl and cloud with growing lust.
After what seemed like an eternity, Pikachu pulled away, letting Ash get some dazed breaths into his lung. “Pikapi~” Pikachu said lustfully, licking his lips as he stared down at the dazed look his trainer had. Pikachu pulled his hands out of Ash’s shirt, and proceeded to quickly strip his trainer from his clothing. Ash was in too much of a daze to stop the electric type, leaving him completely at the mercy of his very horny pokemon.
First, Pikachu removed Ash’s jacket and shirt. When he did, Ash’s round tits bounced free, jiggling about in an alluring fashion. Pikachu giggled at his trainer’s fat chest, wondering why he would ever hide such treasures. He then proceeded to pull down Ash’s pants and underwear, letting Ash’s legs be free and prevent Ash from trying to hide his now fully erect member.
Now that he got a closer look, Pikachu was truly astonished by Ash’s size, having originally thought that Ash was acting so high and mighty before because he was compensating for something. That was far from the truth as he stared at his trainer’s impressive length and hefty balls. Along with that, Pikachu marveled at Ash’s fat plump ass, wondering how he missed it before. All of this told Pikachu that his new desire to mate with his trainer was the right one.
By the time that Ash was finally starting to get his senses back, Pikachu had left him fully nude as he was. “H-Huh?” Ash said as he regained his conscious thought. He realized that he was buck naked before his pokemon. “P-Pikachu?! W-What’s going on?!”
“Pika-Pika~” Pikachu said hungrily before tackling Ash’s naked body. Pikachu smothered his face in Ash’s plump pecs, motorboating the round tits. His strong squeezes made Ash moan out, unable to resist. Pikachu’s dick rubbed against Ash’s, both of them leaking precum onto each other and Ash’s stomach. Pikachu’s dick was letting off small electric sparks that tickled Ash’s member, making him squirm.
“A-Aaah,” Ash moaned as Pikachu teased and pleasured his body. His limbs felt numb, unable to move or resist Pikachu’s advances. His pecs and dick tingled from Pikachu’s groping and grinding. Ash then felt Pikachu stop his teasing, earning a confused groan. “P-Pika-HMGPHM!”
“Chaaaa!~” Pikachu cooed happily as he slammed his erect dick down into Ash’s mouth. The electric type wasted no time, he wanted to fuck Ash’s cute mouth and was gonna do so. He took a firm hold of Ash’s head before thrusting in and out quickly, ramming it yellow length into Ash’s mouth and throat at a rampant pace. His balls smacked against Ash’s neck with each thrust.
Ash was completely caught off guard by Pikachu slamming his dick down his mouth and throat. Despite the shock, his body betrayed him and reacted in wanting for Pikachu’s hard plowing of his mouth and throat. Had he been able to think clearly, he would have realized that he was lacking a gag reflex, and that his mouth and throat were able to stretch and take Pikachu’s decent endowment without issue.
“Pikapi!” Pikachu cried out happily, lost in utter bliss as he skullfucked Ash with all his might. The horny pokeboy wasted no time thrusting his dick in and out of Ash’s mouth, not seeming to care at all about how hard or fast he was plowing his trainer’s mouth and throat. As he did, electric sparks emanated from his member, lightly shocking Ash’s mouth and throat. As he fucked harder and faster, the shocks became wilder and started to mess with Ash’s nerves and mind. He kept on fucking without stop, pushing is hard length in and out of Ash’s mouth at a rapidly increasing pace, holding his trainer’s head until he finally reached his limit. “Pika-Pika-Pika-Pika-Pika-Pika-CHUUU!”
With one hard thrust, Pikachu unleashed both his load and a powerful electric shock right into Ash. Ash felt like his brain was being fried from the inside out as Pikachu unloaded electricity from his dick into his skull. He was so overwhelmed by the electric shock that he lost control of his own member that he ended up shooting off his first load as well into the air. Ash’s seed went airborne before cascading onto his own body. At the same time, Pikachu’s spunk shot down his gullet and directly into his stomach, filling it up and causing it to bloat out. His stomach bulged from Pikachu’s spunk, making Ash look like he was a couple of months pregnant.
“Chaaa~” Pikachu moaned out happily as his release ended. He sat back, pulling his somehow still hard cock from Ash’s mouth. Ash just laid there with his mouth gaping and his eyes glazed over, looking like he had been fucked stupid. Pikachu sniggered at Ash’s dazed expression, as he was far from done.Before doing anything else, Pikachu took a handful of Ash’s cum and tasted it. He was surprised by how good his trainer’s cum tasted, and knew he would want more. But he had something else to do first.
Pikachu then got off of Ash and lifted his trainer’s legs, spreading them apart to expose Ash’s right entrance. Pikachu stared hungrily at Ash’s puckered asshole, his dick twitching with excitement for the main course. Pikachu licked his lips before leaning down and kissing the ring of muscle. He nibbled on Ash’s asshole before thrusting his tongue inside, stretching the entrance with his tongue. After a few minutes of eating his trainer’s ass out, Pikachu pulled back. He pressed his hands on Ash’s big round balls before lining up his hard member along with Ash’s entrance. He gripped Ash’s ass before pushing his dick against the hole, and plunging inside.
Ash had slowly been recovering from the electric shock to the skull from Pikachu’s orgasm. He had been able to regain conscious thought when Pikachu started licking his asshole, getting a small moan from him. That soft consciousness was speared through as Pikachu slammed his dick into Ash’s asshole, making the trainer cry out as he saw stars. “H-HAAAA!”
“Pikaaa!” Pikachu cried out happily after burying his rod into Ash’s arse. As soon as he got a good feel of Ash’s insides, the electric type started pounding away at Ash’s ass without mercy. “Pika! Pika! PIka! Pika! Pika!”
“P-PIkachu! H-Haaa! G-GAAAH!” Ash screamed as Pikachu fucked his ass so roughly. His arms and legs were still numb, meaning he could do nothing to resist his starter pokemon’s forceful fucking. As Pikachu smashed his ass, Ash’s dick, stomach, and pecs bounced about in tandem with Pikachu’s thrusts. Pikachu’s cock stretched his insides and pressed hard against his prostate, making Ash see stars. His dick, which had remained hard even after he came before, was smacking against Ash’s cum-covered stomach, leaking more precum while Pikachu held his balls firmly.
Pikachu was completely ignoring Ash’s cries, focused solely on his own pleasure. “Pika-Pika-Pika-Pika-Pika” Pikachu said as he kept on thrusting in and out of Ash’s ass. His hips smacked against Ash’s plump cheeks with plunge. As he fucked Ash, his hand-like paws squeezed on his trainer’s bulbous balls. Pikachu’s cheeks and dick were releasing more small sparks, the later making Ash’s insides spasm with pleasure as well.
Ash’s screams quickly turned into moans and squeals of pleasure. His eyes were glazed over and his mouth was gaping with his tongue hanging out. Any thoughts he had about his journey, becoming a pokemon master, worrying about Pikachu’s transformation, and stopping Pikachu from fucking him were long gone. All he could feel and focus on was how good his body felt and how good it felt with Pikachu fucking his ass. His pecs jiggled wildly and his dick bobbed about with each of Pikachu’s thrusts. His ass felt like it was on fire with Pikachu’s electrified pounding. All his mind could center on was the mind breaking pleasure he was getting.
It was the same for Pikachu. He didn’t know why his body had changed or why, not that he was really thinking about it. All he was focused on was mating with Ash as much as possible and filling him with his seed. The electric type’s thrusts became faster and harder, smashing into Ash’s ass at a quickening pace. The electric sparks coming off his cheeks and dick were getting bigger and wilder, coursing all over its body and around Ash. “Pika-Pika-Pika-Pika-CHUUU!!!” Pikachu slammed his dick fully into Ash before releasing a second ejaculation accompanied by another powerful electric shock that coursed through Ash’s entire body.
“KYYYAAA!!!” Ash screamed as he felt Pikachu’s electrified release go through his body. His entire body was alight with electricity, his entire body buzzing while supercharged spunk shot up into his guts. His already somewhat inflated stomach began to grow even larger. It was practically glowing as Pikachu’s electric type cum blasted into him. Overwhelmed by the electricity running through him, Ash’s cock once more erupted, shooting streaks of sticky white spunk into the air and across his own body. Some made it to his pecs and few droplets even reached his own face.
The two males came together, their cries of pleasure across the open grasslands, catching the attention of several pokemon in the nearby areas. Some were Kanto natives, others not so much.
As both of their releases came to an end, Pikachu stopped releasing electricity. He slumped forward, landing on Ash’s body with his head in between Ash’s pillowy pecs. Ash was breathing roughly, but had not gone unconscious from the second electric shock, seemingly gaining a resistance to it. He was in a dazed state, but he was still able to think and slowly regain cohesive thought.
“....t-that…was crazy,” he managed to breathe out. His dick was half-limp and pressed between his cumflated stomach and Pikachu’s humanoid body. “A-At least we’re done now.”
“Oh we’re not done yet, Ash~” Pikachu’s voice sounded off. Ash went wide-eyed as he saw Pikachu smiling at him between his pecs. “Let’s keep mating until we both get tired!”
Before Ash could question how he was able to understand Pikachu now, the electric pokemon lunged forward and kissed him again. He then felt Pikachu’s dick, which was still inside him, get hard once more, and the starter pokemon started pounding away into Ash once more.