Celestia was struggling not to fall asleep. She was nearly entirely submerged in one of the warm pools of water in her private baths, her wings splayed out to either side. Her hoofshoes and such were piled near the pool, discarded to allow her to soak in her water naked.

But then she heard a muffled swoosh from nearby, and four quiet tik sounds. From the way they felt, she recognised the sound of someone landing, and she frowned a little as she slowly sat up in the water, opening her eyes. She had to blink a few times to clear the water, but she managed to discern a pony-shaped form, of some sort.

She shook her head a little, and her wet mane, as it dried, began to take to the air and flow as she looked at her visitor. Her expression changed a few times as she noticed them, comprehended them, tried to remember who- or what they were...

But she wasn't sure. After gently clearing her throat, she asked, "Who... Are you?" as one ear flopped down. To her surprise, though, he spoke in her head. Celestia was no stranger to mindtalk, but her mind was protected by layers of spells, keeping her protected from intrusion by even Starswirl himself.

But not this creature, somehow. "Sorry, I do not mean to interrupt... But I've come to ask you about something", he said, as Celestia took in the sight of his flowing... Mane, and the golden circle around his midsection.

"Okay... Well, I'm Princess Celestia, I used to rule here with my sister for quite a while... But now my student is in the process of taking my place" She said, unable to keep from putting on a proud smile as she thought of Twilight.

"But you have more experience, I would assume? I am Arceus, creator of everything in... my world, and I've come to investigate a link that's been repeatedly opened between my home and this place..." he said, taking a look around her bathhouse.

Celestia thought for a moment, then she said, "You... created everything? I'm not sure I would normally believe anything you're saying, but... Simply getting in here and speaking to me like you are without setting off alarms or defenses speaks to your... Special nature..."

To her surprise... He laughed, somewhat. His voice had more mirth in it this time, as he spoke up. "Heh... I very much did set my homeworlds into motion, I was hatched from an egg that existed before anything else... But if you don't know who I am, why do others of your kind do?" he asked.

"I just can't think of anything... okay, Is there a name for your home? Or... What do they call you?" Celestia asked.

"Well, the word my kind are given, we're known as Pokémon" he said, and in that moment, Celestia's face brightened with recognition.

She smiled as she said "O-Oh! I know about those! It's uh... well, in our world, you guys are just... you exist within a videogame, kinda, I never knew that your world was something real..."

"Heh... that's what I've heard from the others, and yes, our world has videogames as well" he said. "Perhaps there is a universe where you are merely a character in a TV show, perhaps me as well" he hummed softly.

By this point, Celestia was relaxed again. The... stallion, she decided, had a relaxing voice, and so far, she enjoyed talking to him. She giggled softly, then she said, "That sounds interesting for sure, but I'd imagine you would make for a far more interesting pony in a TV show than I would..."

Arceus had no mouth, she'd noticed. It explained why he had to talk to her through his head. However, to her surprise, he could blush, and her ears perked a bit as she noticed the slight redness on his face.

It took him a moment to respond, then he said, Well... I'm... sure you would, as well". It seemed he was... shy, almost. Maybe there wasn't anyone like her in his world, but... surely, if he had created everything, there wasn't anything that could surprise him, right?

In that moment, Celestia felt an impulse, and with a smile, she decided to act on it. Gently swishing one of her hooves through the water, she softly asked, "I imagine you've traveled quite a long way to make it here... would you want to join me? Well, if you're not busy, that is... and if the water isn't something that would hurt you... I-I don't know that much about your kind, eheh, I've never actually played a Pokémon game..."

As she asked the question, Arceus felt an impulse. Why not relax with this mare? She was... attractive, after all. A beautiful white coat of fur, a sparkling, colorful, flowing mane, a soothing voice, she'd complimented him... and it had been so, so very long since he'd... simply had a conversation with someone. Most Pokémon were too frightened by him to relax in his prescense, and even then, he couldn't let himself relax around others. He was the guardian of their entire world, the creator as well, it seemed wrong for him to indulge in things of a material nature or let his guard down.

He didn't lack experience, of course. He had urges like any other Pokémon, but they were rarely sated. Celestia stayed quiet as Arceus thought things over, and when he stepped closer to the pool, she began to smile a little. He gently dipped a pointed hoof into the water, then he softly said, "I don't see why not..."

Since Celestia was below him, she was able to see his underside, and she was somewhat disappointed that she couldn't see any sort of... well... genitals. She felt guilty for the thought, though. The creature was her guest, she was just going to have a conversation with him, it wasn't right to be looking at his crotch.

And yet, she couldn't shake the shred of attraction she felt. Arceus lifted a hoof, reaching back to grab onto the metal protrusion surrounding his midsection. Celestia frowned slightly, realizing that being mounted by Arceus would involve also being stabbed by Arceus, but perhaps that thought was the price to pay for her other thoughts. To her surprise though, Arceus simply... removed it. He lifted the metal ring off of his back, and he very slowly set it down on the edge of the pool, just like her hoofshoes and her collar.

Once he noticed her expression of surprise, he spoke again, mirthfully saying, "Did you think that was attached to me?"

"I... well... yeah!" Celestia said. The creature simply chuckled inside of her head again, then, he smoothly slid down into the water. Once he was submerged to the neck in the pool, he seemed to relax, but then he closed his eyes. Somewhat like a changeling, a shimmer of some sort of magic ran down his body from head to tail. The golden parts of him turned Turquoise, with pink spots. His eyes and the markings on his face turned pink as well, and the ring he'd removed from his body changed color as well.

He opened his eyes, and to Celestia's surprise, she heard him take a deep breath, then a few of the lines on his face parted as he opened a mouth, and he spoke with a real voice. "In this form, I actually do possess faculties to talk, and everything else... the people in my home world don't have a name for this version of myself, actually. I can mimic the typing of any other Pokémon, but this form has no type, because it's simply an altered version of my body to allow myself a more physical body..."

"That's... cool..." Celestia said, smiling at him a little. She moved backwards slowly, leaning up against the opposite side of the pool. Suddenly, it seemed... rather small. "Well, I-I like this form, you have a really nice voice..." she softly added, one ear flopping down.

Then, she got to see the Pokémon begin to turn red again... which brought a smile to her face, which made him begin to look embarassed. Acting on a whim, she spoke again, "And you look just as nice in those colors as you did before!" she chirped, grinning a little bit as met his eyes. Yet again, the redness in the Pokémon's cheeks grew stronger, and she couldn't help but feel the tiniest smirk edge into her smile.

It was... cute. And she was having fun with it as well. Arceus nodded softly, saying, "Well, I... quite like... your mane, especially the way it flows in the air like my own..."

Celestia pushed away from the edge of the pool, and she swam to Arceus' side. As she approached him, she said, "You know what? I'm not sure what Pokémon do with friends, but... I'm really glad you came to visit, and I'd like to be your friend, if you'd like..." she said, wrapping her arms around the odd creature as she hugged him. She nuzzled him as well, smiling happily as she spoke again to add "Oooh, you're soft as well, and so smooth..."

Arceus was... frozen. Paralyzed, perhaps. This attractive mare was hugging him, showering him with affection and more compliments, or... was she flirting? By the time he realized what was about to happen, it was too late to stop her without having to use a move, and he simply braced himself, closing his eyes, and he cringed as he felt things stirring below him in the water...

As Celestia hugged the Pokémon, she gently swung her body to the side, so she could move in front of him. "One more hug, then I'll let go..." she hummed, giving his neck a playful nuzzle as the back end of her body slowly sank back into the water, heading towards Arceus' lap.

Of course, she planned to let go of him before she actually sat down in his lap, but... then she felt it. Pressing against her belly, she felt the unmistakable sensation of a cock touch her, and she glanced up to see the... pained, somewhat, expression on Arceus' face.

To his surprise, she apologized. "Oh, I... Arceus, I'm sorry, I didn't... I didn't realize, I didn't mean to... make you uncomfortable..." she softly said, as she let go of him and backed away a little bit.

He took a deep sigh, and he said, "No... it's not your fault, I am the one who can't control his own urges".

He sounded annoyed with himself, so Celestia waited a moment before she softly said, "It's not your fault, though..."

He lifted a hoof out of the water just to gesture it at the water, then he said, "I should be able to control myself, I am Arceus, I can't simply be allowing myself to lust after someone I've just met, regardless of how stunningly attractive they may be, because it's expected that I'm the most pure being..."

Arceus happened to look back at Celestia while talking, and it suddenly became very hard to talk. Primarily due to the smirk she was wearing, and the clearly obvious bedroom eyes above the smirk. "What was that about Stunningly attractive~?" she hummed, reaching out with a hoof to set it on his chest.

Arceus felt his cheeks nearly burning for the first time in centuries, and his heart leaped in his chest. He hadn't felt like this in centuries, but he refused to let his confidence wane any further. "I meant what I said, you're the most alluring creature I've ever met, which I suppose gives me somewhat of an excuse as to why I've dropped so much composu-"

And then Celestia made it even harder to keep composure. Hearing the creator of its own universe describe her as the most alluring creature he'd ever met was more than enough, and she latched onto him once more, hugging herself close. Then, moving one hoof behind Arceus' head to press against his smooth mane, she pulled him into a kiss.

Arceus was stunned for a moment, but he managed to recover within a few seconds, and Celestia felt one of his hooves press against the back of her head, trapping her in the kiss as well when Arceus began to return it.

Celestia decided to wriggle her tongue into Arceus' maw, excited to feel what his tongue was like, but she quickly learned that she was outmatched as Arceus' much larger tongue fought back, plunging into her own maw and then down her throat. His tongue slid deeper and deeper down her throat, bulging it out, making Celestia shudder as she pulled herself even closer to Arceus. Her hips slid into his lap, and his cock was squished between them as Celestia's heavy, plump teats cushioned the base of Arceus' cock. She could feel the tip of his cock somewhere near her chest, and the realization that he was very well hung made her moan into the kiss as she felt his tongue worming towards her stomach.

Thankfully, he stopped before he actually pushed it into her belly, then he slowly pulled his tongue back out of her, stopping on the way out to engage with hers, prench-kissing her for a full minute before he finally released her head and broke the kiss. This time, Arceus smirked a little bit, looking down at Celestia as he asked "Are you sure you think you can handle the most powerful Pokémon to ever live?"

Celestia returned his smirk with one of her own, and she closed the gap to give him a brief kiss. "Bring it on, sexy~" She growled, following up with a seductive lick to his jaw. "You can't just sneak in here with a cock like this and expect to keep me away from it..." she added, leaning back just slightly so she could place a hoof on the shaft between them. She could barely see it thanks to the light reflecting off of the water, but just from touch, she could tell he was a very gifted stallion.

Arceus began to grin, but he tensed up as he felt a tingling sensation surround his body. A moment later, he realized what it was- Celestia's horn was glowing, and as he watched her, she slowly lifted him out of the water, setting him on the edge of the pool directly in front of her. As the water dripped off of his now-exposed cock, the magic field disappeared, and Celestia stood on her hind legs in the pool in order to properly look him over.

"Damn...." she quietly whispered, shudders of arousal running through her. Arceus was huge. He was just as tall as she was, albeit bulkier due to being a male (and a totally different species...), and his cock was larger than his size would imply. In fact, as Celestia touched a hoof to the bottom of it and pointed it upwards, the tip of his cock came up to his chest, giving her a vague estimate of how deep inside of her it would be going. Though for something this big, Celestia would rather be using a cum-belly to hold the deeper parts of his cock rather than trying to fit it within her body...

Surprisingly, unlike the rest of him, his cock was... standard. It looked like any other stallionhood, aside from its impressive size. He had two huge balls resting on the smooth bath stones below it, and Celestia smiled as she nuzzled her snout beneath them, taking a deep breath of Arceus' watered down musk. It was faint, but she still liked it. Next, she tasted him, slowly licking each of his balls, then slowly licking the base of his cock, then catching a line of precum as it ran down his shaft... he tasted like a stallion as well, but just different enough that it was exotic and exciting.

While Arceus had a dark gray underside, the area between his hind legs was black, as well as his cock and his balls. Celestia looked up to him with a playful smirk on her face, but to her surprise, Arceus looked... vaguely unhappy. It brought brief alarm to Celestia's expression, and she quickly asked "Is everything okay?"

She successfully startled him out of his thoughts, and he gave her a weak smile as he said, "Oh... please, don't take this as a challenge, but... I very much doubt that you're going to fit me very well..."

He didn't know her well enough though. To Celestia, that made it... double challenging. The smirk returned to her face as she set her hooves on his thighs, quietly saying, "Oh, really now?"

"You can try, but I don't want to harm you..." Arceus softly said, even as his cock firmly twitched above Celestia, producing a small gush of precum that ran down its length befoe the Princess caught it with her tongue.

Celestia just giggled, and she grabbed his cock with a hoof, aiming it towards herself. "I like to take things slow, but just for you... allow me to show off just a little, okay~?" She hummed, following it by winking at him. He just offered her a nod in return, and he watched as she pressed her lips to the tip of his cock.

Celestia opened her mouth wide, and she popped the flare inside without much difficulty. Then... she pushed. Inch by inch, Celestia pulled herself into Arceus' lap, shoving his cock down her throat. Slowly, a thick bulge traveled down her neck as Arceus' cock disappeared inside of her, and she barely even paused for his medial ring.

"Oh... oh... Celest...." quietly hissed the stallion, unable to look away as his cock disappeared down her throat. To his surprise, the white mare hummed with pride as she mashed her snout into his crotch, where somehow, she took a deep breath of his musk. It must be some of that magic she possessed... perhaps it would be worth asking her how it worked?

Right now though, the only thing on Arceus' mind was how good Celestia felt. Every inch of his cock was gripped tightly by soft, warm flesh, and it wasn't something he was used to. His cock was already gushing a gentle supply of precum as Tia kept it warm, and then she began to move.

The princess started off slow, pulling back until she felt his medial ring leave her throat before she pushed her head back down. It seemed like his flare was close to her stomach, he was so deep, but she found that hot. Tia's eyes went half-lidded as she poured more focus into sucking his cock, though her eyes never left Arceus', drinking in his reactions as she drank down his increasingly-plentiful precum.

The poor stallion must have been pretty badly pent up... it didn't take very long for Celestia to feel his cock starting to flare, and as soon as it did, she sped up. The princess began to shove her snout into Arceus' crotch over and over, and she even began to let out faint little groans of pleasure as she drank in his taste, the feel of his cock buried down her throat, the sound of his moans...

Celestia's ears perked forwards to listen as Arceus began to moan, his voice a deep rumble that made her heart flutter and her marehood wink, but she didn't realize it was a warning. As she stuffed his cock down her throat again, she felt something grab her horn. Her eyes widened as she realized that Arceus had grabbed her horn, and she could only squeak as he used that leverage to shove her down into his lap, stuffing his cock as deep as it could go as he closed his legs, trapping her snout between his thighs as they began to tense.

She felt the shaft bulging, the tip flaring just a bit more, and strong shudders of arousal ran through her body as a strong blast of his cum fired off inside of her, splurting deep down her throat so strongly that she could hear it as well as feel it. He wouldn't know it yet, but grabbing her horn like that and holding her down as he came... Celestia loved it. The white mare had been doing everything she could to resist the urge to pleasure herself while she sucked Arceus off, but as the stallion moaned and rode out his orgasm down her throat, she couldn't stop herself from snaking a hoof between her teats to press firmly against her drenched marehood, and she began to moan as she gently humped against her own hoof, seeking out her own pleasure as Arceus flooded her belly.

Of course, he still had limits. This was only one orgasm, and it did more to reawaken Arceus' libido than it did to actually drain his balls... as his climax began to fade, he released her horn, and Celestia began to slowly pull off as the splurts of his cum grew weaker. She made it to the tip just in time for the last few pumps, and Celestia groaned weakly as Arceus painted her tongue white, letting Celestia get a good taste of his seed. She pulled off, leaving his cock spotless, and she made sure he was looking as she swallowed it. Forcing herself to pull her hoof away from her pussy, Celestia swished it through the water to clean it off and grabbed the edge of the bath, lifting herself out of it.

Arceus was panting, and as he rode his afterglow, he couldn't look away from the princess' wet fur clinging to every last curve she had... like the most graceful Rapidash to ever live, but twice as beautiful. As he watched, the mare lit up her horn and cast some sort of magic, that ran along her body and cast away all of the water soaking her fur, leaving her almost completely dry as she shook away some of the last drops of water. Then, she looked at him, wearing an odd expression that for some reason, made his slightly-soft cock twitch.

"You...", she said, as she walked over to him, bringing her snout close, "Are going to breed your princess in her own bed tonight, you got that...~?" she hummed, gazing down at Arceus as she admired his expression, which was admittedly difficult to read.

Well, if not for the bright red blush. "I...", he said, not sure what to think about the implication that she ruled over him. But... he was an intruder in her world... and he very, very much wished to join her in bed. He quickly nodded, saying, "...would love to, if you would show me there...~"

He picked up the ornament he often wore, and Celestia picked up the scattered golden regalia that she wore, then she leaned in, and she pressed her lips to his for another kiss. He tried to return it, but as her horn glowed brighter, everything went white for Arceus.

Author's Note

sex

edit: Saphira is not part of this story sorry about the mixup