I always wanted to write a Renamon story. I always wanted to write a blueberry expansion story. I figured "Porque no los dos?" Hope you enjoy, especially since the world is in severe lack of a Renamon blueberry!

Renamon and Impmon go on a stroll through the forest and come across some interesting blueberries, which have some interesting effects on them.

The yellow vulpine Digimon, Renamon was never one for expressing her feelings, often remaining cold and distant from those one could consider her friends. Even if she enjoyed their company, she would never outright express it, wanting to retain her collected demeanor. This did not mean that staying collected didn’t prove a challenge, especially when the tiny Impmon asked her to take a stroll in the forest with her.
Though Renamon would never admit it, she had quite a thing for Impmon. Being able to spend alone time with him was very special to her. Of course, she had trouble expressing that fact, so she did what she always did; act indifferent towards most anything.
“Th-thanks for agreeing to go out with me, toots,” Impmon worked up the courage to say. It was the first thing either of them had said since the walk began.
“Sure,” she replied with a blush and an awkward turning of the head.
The two quickly made a habit of examining trees and brushing their hands against bushes to make it seem as if they were keeping busy. Both of them were shy in their own right and were waiting desperately for the other to strike up conversation.
Finally, Impmon remembered an interesting story that he thought to share.
“Hey,” he said. “Didya hear about that new virus in the Digital World?”
Renamon shook her head.
“S’got somethin’ to do with berries. They say…”
Renamon’s mind seemed to trail off as Impmon spoke. The last thing she would have liked to talk about with Impmon was berries. She was hoping to have a conversation that was a little more meaningful. She nodded her head passively and waited for Impmon to finish so that she may bring up a topic a little more interesting than…than…
“What was he talking about?” thought Renamon.
“Ain’t that the weirdest thing?” Impmon asked as he finished talking.
“Huh? Oh, y-yeah.”
“Yeah. I thought so too.”
Impmon cleared his throat as Renamon kicked the dirt, fishing for that talking point she knew she had swimming in her head somewhere.
“Say, I’m starving!” Renamon said.
“Really? Let’s find something to eat then. Wanna find a restaurant or…?”
“Well, I’m sure we can find something out here in the forest.”
“Natural eater, huh?”
“You could say that. Berries, nuts. That sort of thing.”
“Right! Just, uh…avoid the blue ones! Heh-heh…”
“Y-yeah!”
Renamon wondered what he could have meant by that. It probably had something to do with the thing he was talking about earlier.
“Nuts, I guess?” she thought. “Yeah, probably. No blue nuts, I guess.”
The two Digimon started scrounging around for something growing off the bushes, figuring that anything in this forest should be safe for any Digimon to eat. It wasn’t long before Renamon came across a bush with berries on it.
They looked very similar to blueberries from the human world, but had a bit of a glow to them. Renamon had never seen anything like them and picked a pawful to bring back to Impmon to share.
As she brought them back, she picked one of the juiciest-looking ones from the bunch and rolled it between her fingers. It looked extremely tasty to her.
“Maybe I’ll have one, just to see if Impmon will like it.”
Without a second thought, Renamon tossed the blueberry into her mouth. As she chewed, the resulting juices seemed to splash all over the inside of her mouth. It was as if she were drinking a blueberry smoothie. It was sweet and cool, almost refreshing. When she swallowed, the juice seemed to plop into her belly. It was quite tasty, but she felt full already.
Impmon emerged from the bushes empty-handed.
“Well, I couldn’t find nothin’. Any luck on your end, toots?”
“Actually, I found these delicious looking berries back there. I brought a bunch over already if you’d like to try one.”
“Huh?” Impmon eyed the berries carefully and his eyes widened in horror.
Renamon cocked her head at Impmon’s strange expression.
“Is something wrong?” she asked?
Impmon swatted the bushel out of her paws and crushed them underneath his foot.
“Hey,” Renamon exclaimed angrily. “What was that for?”
“Didn’t you hear a word I said earlier? Those blueberries are infected with a weird new virus!”
“Th-they are?”
“Yes! I just told you about ‘em! Supposedly, if you eat one of these things, your body starts expanding and filling up with blueberry juice. You’d practically become a blueberry yourself!”
“What did you just say!?”
“Guess you must’ve heard me this time. Pretty weird stuff, huh? Good thing you didn’t eat any.”
Renamon simply stared down at the tiny purple Digimon with a look of fear in her eyes. Impmon took notice and the look of horror he had before came back in full force.
“You…didn’t eat any…right?”
“I…”
Renamon suddenly became very aware of the taste of blueberry returning to her mouth.
“Toots? Your nose…”
“What? What’s wrong with it?”
“It’s…blue.”
“Huh?”
Renamon reached for her nose, only to see that her paw tips were becoming blue as well, that blue creeping through her hands and up her arms. Her purple armsleeves seemed to become drenched in whatever Renamon’s body was now coursing with, becoming a deep violet. The blue within her spread out along her torso, legs, and head, turning the yellow fox Digimon into a uniform shade of blue…not unlike a blueberry.
“Impmon…! What’s happening to me? I’m completely blue!”
“Gah, I thought you got the picture already! Your body’s filling up with blueberry juice!”
“Filling up? You mean…”
“This little predicament? It ain’t over yet…”
As if on cue, Renamon was dragged down by a great weight. She looked down to see her belly bloating out in front of her, along with her widening waist. The juice inside of her began filling her out as it stretched out the volume of its container, namely Renamon’s body. She felt her butt fwoomp out behind her as it started expanding like a water balloon as well, rounding out with her inflating back. Her cheeks started to fill up with the juice she tasted before, making her look as if she had just stuffed her face, which wasn’t entirely false.
She tried to clutch her belly, as it was becoming too big and heavy for Renamon to support it normally. Her limbs, however, weren’t safe from the juice making her bloat. Her arms and legs were growing along with the rest of her body, becoming a part of the big round blueberry she was turning into. Her armsleeves burst into tiny shredded fabric long ago, not being able to contain Renamon’s bloating arms any longer.
Finally becoming too heavy to handle, Renamon fell onto her fat, growing belly to relieve herself of the cumbersome weight. She could feel herself being lifted by her berry belly as she grew.
“Impmon, do something!”
Impmon didn’t respond. As she looked up, Renamon saw him with a lovestruck half-smile on his face. It was only a small glimpse, however, as Renamon’s neck began bloating as well, forcing her head straight ahead.
“No way,” Renamon thought. “Is he actually enjoying this!?”
Renamon’s thoughts were suddenly broken as she remembered her current predicament. Her round ballooning belly was making her rise even higher, making her about half as big as the largest tree in the forest. Her limbs were being absorbed into her inflating frame, creating small divots where her now-useless hands and feet were sinking into. Her head went through a similar sinking experience, though it stopped just enough to be able to look in front of her.
With a rumble of her stomach, Renamon finally felt her growing cease. She was thankful that she didn’t explode, but still didn’t appreciate the state she was in now. Renamon, once fit, supple, and athletic, was now a giant, immobile, spherical blueberry vixen comparable to the size of a Mamemon, towering over the already-tiny Impmon. Her body experienced a whole new meaning of the word “tight” as the pressure of the blueberry juice within her made her feel full and bloated.
“Ooooooh,” she groaned, rocking on her belly all the while. “I feel…way too full.”
“No kidding, toots!” Impmon exclaimed excitedly.
“Why do you sound so happy? Why does anything about me being a giant blueberry make you happy!?” Renamon yelled as she flailed her tiny useless hands in panic.
“Well…” Impmon began as he rolled Renamon in as much of a sitting position as she could get. He couldn’t help but let out a small giggle at the notion of rolling her around as Renamon let out dizzy “whoas” from all the spinning.
“Because I think you look pretty cute, that’s why!”
The blush on Renamon’s blue face made her rounded cheeks look almost purple.
“You do?”
“Absotively, posolutely!”
Impmon started to climb up on Renamon’s body, making his way up to her head.
“Hey,” she exclaimed. “Careful with those claws on your feet! I might just pop!”
“Pop? Heh, heh. No way! You’re way too tight to be popped by anything,” he complimented, clinging to Renamon’s belly and patting it. Impmon’s pats were replied to by a somewhat-solid thunk and a giggle from Renamon.
Impmon completed his ascent to Renamon’s head and rested on his side, propping his head up with his arm.
“Impmon…you really think I’m cute as a big blueberry?”
“Well, I always thought you were pretty cute, but now you’re even cuter!”
“But just look at me! I’m big and blue and bloated, and I can’t even move!”
“I ain’t gonna say that don’t matter, because now it’s part of the reason why I like you so much, but it’s definitely not something I’d hate you over. Think about it! Now you’re bouncy and round and just fun to play with! You’re like a big ball! Who wouldn’t like a dame like that?”
“Oh,” Renamon swooned. “Look at my little flatterer here.”
“Yeah, who knew?”
Impmon placed himself in front of Renamon’s face, resting his head on his hands and lifting his legs like a schoolgirl at a sleepover.
“Can I let you in on a secret, toots?”
“Please,” she answered shyly.
“I’ve liked you for a real long time.”
“Funny. I’ve liked you for a long time too.”
“I guess that means we’re boyfriend and blueberry girlfriend now.”
“So it would seem,” she said with a giggle.
“Does that mean I can kiss my blueberry girlfriend now?”
“You’re really hung up on this blueberry thing, aren’t you?”
“More so on the girlfriend part, but this is just icing on the cake. I gotta say you wear it pretty well.”
“Really?”
Renamon rocked herself back and forth as much as she could. Impmon laughed and clung to her tightly to avoid falling off. She had to admit, though feeling a bit odd, being a giant blueberry was something she could get used to. Heck, she could even learn to like it. In fact, she’d say she was well on her way to that right now.
“I do look nice and ripe, don’t I?”
“No kidding. Now about that kiss…?”
“Hee, hee. I’m surprised you haven’t already.”
Impmon giggled and grinned before leaning towards Renamon, giving her a big kiss on the lips. He could taste the blueberry juices inside her mouth which made the kiss that much more enjoyable. He took his hands and gently grabbed Renamon’s bloated blue cheeks, shifting and squeezing them to get more of the juice out. The two of them giggled as he did so.
As they kissed, Impmon couldn’t help but start drinking the juice from her mouth. Like a baby at a bottle, he began sucking rhythmically at the kiss. He stopped for a bit to catch his breath.
“Seems like someone’s a bit thirsty.”
“Couldn’t help myself. You just taste delicious.”
“Then by all means, drink up, Impy.”
Pleasantly surprised at getting permission, Impmon immediately went back to earnestly sucking the juices from her mouth through their passionate kiss. Her cheeks were practically deflating as Impmon drank more and more blueberry juice. It seemed that her body was producing more, however, as her cheeks would always fill right back up as soon as Impmon sucked all the juice out. After a short while of drinking, however, Renamon suddenly became aware of a growing pressure on her muzzle. Impmon started growing!
The juice, however, seemed to have a different effect than the actual berry. Rather than simply inflating into a blueberry, Impmon started fattening up at a frighteningly quick pace. His belly flabbed outwards with each swallow, and his chest was deforming into a pair of pillowy moobs. His tail, while becoming flabby and chunky in its own right, was slowly being lost in-between the two gelatinous orbs that were now his soft, giant butt. His thighs surged outward until they squished together, so that they’d always be touching no matter how he moved them. Renamon giggled the entire time as she watched Impmon drink himself into a fatty. Though he must have heard her through their kiss, as he stopped to ask “What’s so funny?”.
“Oh, nothing,” she snickered. “It’s just…you drank quite a lot.”
“I did?”
Impmon got up only to suddenly realize that he seemed heavier than he was only a few minutes ago. He looked down to see just how fat he had become from drinking all that blueberry juice. He grabbed his belly by the lovehandles and lifted it up with great strain. When he let it flop down, he looked behind him to see his great big butt sticking out. He put his hands to his face in shock, only to discover his cheeks were now rounded and flabby. He squished them around and squeezed them just to see how fat they had gotten.
“What the heck happened ta me? I’m a big fatso!”
“A big, handsome fatso, at that.”
“Guh!?” Impmon exclaimed, blushing at being called handsome. “You serious, toots?”
“Of course! You just look so warm and huggable, not that I can actually do that now. But you’re just a big snuggly handsome fatty to me.”
“Huh.”
Impmon hefted his new gut proudly and squished his moobs together playfully.
“I guess this ain’t so bad after all. Especially if you think it’s cute.”
“Oh, it’s more than cute. Trust me.”
“Really now?”
Impmon started posing and dancing suggestively, shaking his flabby butt in Renamon’s face, making her laugh and sigh blissfully.
“Enjoying the show, toots?”
“Absolutely, my big handsome man.”
With some effort thanks to his new weight, Impmon made his way down to the ground and waddled behind her.
“What’s say you and I make our way back to my place and partake in some berry fatty loving, huh? It’s definitely big enough to accommodate my big berry byoots,” he asked her alluringly as he cradled Renamon’s berry bum and bumped it with his own fat butt, enticing a giggle from her.
“I would love nothing more, my big Impy.”
Gently and slowly, the fatty Impmon rolled the big blueberry Renamon back to his home, their love for each other having grown in more ways than one.