My Little Pokémon: Grander World

Equestria. Ponyville. Carousel Boutique. Day.

Currently, at Ponyville, things were rather simple at the moment, with residents living their lives as usual. It was a peaceful day, with the sun shining bright and the sky being clear. But little did they know, some of them were about to be hit with a Young Surprise.

Sweetie Belle was tending to her Pokemon. She was currently brushing the hair of her Meowstic, making sure she was kept well looked-after. Her other Pokemon that consisted of Pluse and Minun were happily sitting down with a smile watching her trainer work on their appearance and make them as shiny and clean as ever.

They had to look their best for the Pokemon Contests, even if there weren't any going on now. But when they did, she always had them prepared. Very soon, Equestria's first-ever Grand Festival would begin, giving Coordinators the status of Top Coordinators. The very thought made her smile at all the fame.

"I'll be a great coordinator soon. And everypony's looking at will finally notice you and love you guys the best~" She hummed sweetly as her Brick Break Pokemon, Crabrawler began to dance along with her, listening to her cute humming as it seemed he took up her passion and spirit in a sense while she spoke. They all looked excited and confident while the other nearby passerby watched, finding them a delight and quite endearing.

Then suddenly, opening the door ever-so slightly was a familiar figure. Smaller and younger now was none other than Sweetie Belle's older sister, Rarity. But after drinking from the Foutain of Youth, she was no younger than her own sister.

Rarity was feeling a bit mischievous now, wanting to prank her sister a little before saying she was her sibling and that would be fun on its own. She silently crept up behind the unicorn while her sister was currently preoccupating, her Pokemon playing, bouncing from side to side playfully.

"Meow?" That is until Meowstic spotted Rarity with an alert aura in eyesight as her ears raised a bit, alerting Sweetie Belle.

"Hm?" Sweetie Belle turned her head after hearing her Pokemon alert and saw Rarity creeping up at her. "Who...?" Sweetie stared at Rarity, locking onto her. "R-Rarity?!"

"Jackpot." Rarity thought to herself. Instead of just saying that she drank from a Fountain of Youth, Rarity wanted to get a bit creative just to mess with her sister. With Sweetie Belle already stunned by the fact that this little one that looked much like Rarity was approaching, with that devious, but adorable young grin too, she knew that something had happened to this version. "I am Rarity. But I'm from the past."

That was her approach. Time.

"Time?! Did you go back in time?!" Sweetie's eyes widened to their fullest point.

"That's right." She replied, nodding. "Willingly too. I..." Rarity paused for a moment, trying to come up with something. She reached a major problem she didn't take into account. While she had the plan to make it seem like she went through time, she wasn't sure what to say afterwards. "Curses. I thought I could use inspiration from one of the movies I was a part of...but this is harder than it looks!"

"...Hm." And Sweetie Belle saw right through her. She knows how her sister is. "Time, huh?"

"Heheh." Rarity sheepishly grinned, seeing that she had been figured out that quickly. She couldn't really blame her. If the roles were reversed, she'd find out too. "Drat. You figured me out...Truth is, all I did was drink from a Fountain of Youth and that's why I'm this way."

"Wait. Fountain of Youth?!" Sweetie was amazed, knowing all about the mythical liquid that could grant one youth. It was an urban legend but a fun one nonetheless. "There's one in the world?!"

"Well, not here. At least, I don't think so. Most likely, there's one in this world of ours. But no. I and the others visited another Universe for that. It was an amazing experience. I'm 7 again!"

"But why?" Sweetie Belle didn't understand it whatsoever. "Why would you wanna age down? Seems kinda pointless."

"For fun, Sweetie Belle. That's what matters. And it's only for a little bit. So no need to worry."

"Hm. Personally, I wouldn't wanna be a kid again even for fun. I'd wanna be older, just like you, Ash and the others." Sweetie Belle explained. In her eyes, she wanted to be older since all of her favourite folks are much older than her. All those close to her and all those she looks up to. Whether that'd be Rarity, Twilight, Ash, Dawn, Fantina and so on. The only exceptions are some of her Pokemon and her friends from school who are around her age.

"That's because you're not a big sister like me. I like to have the role of being the mature one. But even a big sister needs some time to be a kid." Rarity told her. "Besides, this is just for fun. It's a break. It'll last for a while. And I promise you, being an adult isn't the most perfect thing in the world."

"I know. But that just means I'd get to do a lot more by myself!" Sweetie Belle said with glee, mostly wanting incredible free will as an adult.

"You do realize that you have incredible free will as a young teen, right? Being an adult doesn't give you full control."

"I know. I know. But still, as an adult, I'd have no curfew or anything! I'd be free to go anywhere, do whatever! Boy, I wish there was a Fountain of Old or whatever it would be called! That would be so great!" She said at the top of her lungs, wishing for such a thing to exist, even if it already does.

And her voice could be heard.

The palace continued to float through the skies, moving slowly. It was far fro its original location which was Unilight itself. The nation itself has not been revived unlike this and other things from that lost universe.

Eventually, the floating palace came to a stop. This was all due to what it had just heard. All around it were various sounds of many kinds. Sounds from people living, sounds of nature, sounds of the universe and so on. It could hear it all and among one of those things was Sweetie Belle's wish.

And by hearing this, the sparkle lashed for a moment and the palace reacted. The palace had responded to a desire. And this desire was a powerful one. A wish so pure that not even a being from the past, who knew what to do, would dare deny it.

"How long has it been since I've heard the wish of another?" The sparkle's voice was soft, almost as if it were whispering to itself. It spoke so quietly that even if one were right next to him, they would not hear it. "This Universe...It's similar to what once was. But it's not quite there. Perhaps I can bring back everything that was lost by fulfilling some wishes. I think that'll be a good test run."

At that moment, the castle would suddenly begin to shine, letting out a powerful light.

The sparkle spoke these words, and the castle's interior began to glow brightly, a brilliant rainbow-coloured light enveloping everything inside the building. A massive amount of magical power surged forth, filling every corner of the castle with it. The light then shot out, moving across the world to find somewhere to land.

It travelled faster and faster until it reached Manehattan, crashing into the sea of this city. Upon touching it, the rainbow would spread rapidly, covering the water for a moment. As this happened, the rainbow began to shift and change, slowly shifting colors, and becoming darker and darker, until it had turned black.

Then, as if something had pulled the plug, the rainbow sank, plunging into the depths. As soon as it did, the ocean began to bubble, the waters boiling.

In an instant, a beautiful fountain appeared, one with the shape of a Vase, and a rainbow-colored stream flowing out of it. This vase was filled with sparkling rainbow-coloured water.

It was as beautiful as any rainbow, shining brightly, its radiance visible for miles around. The water itself seemed to glow, and a light could be seen emanating from the water.

"I'll call this, 'Rainbow Vase'." The sparkle muttered. "Her Majesty would've loved that name."

Naturally, the residents of Manehattan saw this vase, its beauty captivating them all. They marvelled at it, speaking about its sudden appearance.

Everyone approached the vase, drawn to its beauty, its mysterious nature and its strange powers. Some were afraid to approach, and others were afraid not to. As the people got closer, the sparkle felt its connection to the vase. It could sense its magic and how strong it was.

"Patrat." A Patrat went up to the large lake, deciding to dip its paws in out of curiosity.

With that, the magic within would flow and enter its body. It was a simple process and one which wasn't harmful at all. It entered its mind and the Patrat was surprised for a moment, stumbling and almost falling. However, it remained standing and was still conscious, so that was good.

Once the magic was inside, the Patrat suddenly glowed. A brilliant light engulfed it and its body was beginning to transform. A powerful surge of magical energy flowed through its entire body, and the creature's body grew and changed.

When the transformation finished, a completely different being stood in the place where the Patrat had once stood. The creature now stood tall, its legs muscular and strong. It didn't quite look like its evolution, Watchog, but instead, taking on an older appearance of its current form. It was now older, bigger than most of its species and undergoing a few changes.

Naturally, it didn't take long for children to get involved, their hooves touching the water. Upon contact, they would soon

One pony touched the fountain and his whole body was suddenly enveloped by a brilliant, golden light. A powerful surge of magical energy flowed through him. The light quickly spread throughout the entire body. Soon, his body had undergone a huge transformation. His mane and tail grew, becoming longer, more colorful, and brighter.

Other ponies followed suit, all of them experiencing the same transformation, all of them growing in height and growing in size. They all aged up, straight from kids to adults or adults to elders.

A filly gasped as her body grew. She felt taller, stronger, bigger, and more powerful than she had ever been before. As she was surrounded by this bright light, she began to realize something. The transformation was affecting not only her, but everyone else. All around her, the other ponies, as well as the Pokemon, were also transforming, their bodies undergoing changes, growing in size, and growing stronger.

One by one, they all became bigger and bigger, their bodies becoming larger, and more powerful. Eventually, the light subsided and the group were now much, much older.

Many were confused by the change, especially the filly who had touched the water. The adults were all looking at each other, some trying to figure out what had just happened. Others were shocked by the change and didn't know how to respond.

Some of them were even trying to speak, but they couldn't find the words to describe the situation. But there was one factor in all of this. Those who went from Kids to Adults saw an advantage here. The new elder ponies groaned, already feeling the limits of their bodies.

"Hang on...We can do whatever we want." One pony who was now an adult, said, his voice was deeper and his voice was cracking. "Like...for real this time. Even more than what we can do as trainers."

"We could literally go wherever we wanted. Do whatever we wanted." Another pony chimed in. "We can even skip school!"

"Whoa...this is kinda cool. We have no one telling us what to do or when to do it!"

"So, that means..." The little filly from earlier was amazed. "We're in charge right now. I don't have to listen to my dad or mom. They're not even here."

The rest of the crowd, both adults and children, all turned their heads and looked at her. Their eyes widened as the realization hit them.

"You're right. We're in charge!"

"Yeeeaaahhhh!"

Everyone was cheering and whooping, laughing and crying and everything in between. They all hugged and high-hoofed, and then began celebrating, all of them having fun. They were going to use this change to the best of their abilities and the elders already didn't like the sound of that.

Most of these ponies were kids who were always eager to do more and have a life that their parents would never allow.

"Oh gosh." One elderly stallion shook his head. "This is gonna be trouble."

The adults and elders were now stuck in this situation. They couldn't tell their children or friends what to do and they were going to use this newfound freedom. They would have a ton of fun, causing a bit of trouble and having the time of their lives.

However, due to this new Fountain pouring its magical water into the lake, it was only a matter of time until it would spread out across the other seas. Other regions would get this water, and it would change people. Not only would it cause their bodies to change, but it would also give them an extended lifespan, as well as the ability to age at their own will.

And that's exactly what happened.

In an area near the Unidentified Town, a fountain made its appearance, and it had an amazing effect on everyone and everything.

A group of foals were playing, splashing and messing around with each other in a small pool. All the children were enjoying themselves, splashing around and playing in the water. Suddenly, while playing, each of them aged up, resembling their parents.

The magic would spread in different ways too, already entering sinks and taps. There was a family with two twin foals, one boy and one girl, who had their cutie marks together. The magic of the Fountain had caused them to age up and become young adults, and even then, they were still identical. The parents were stunned to see their children looking just like them, growing up faster than they had imagined.

Soon, across the land, this would spread, affecting all the towns and cities and all the people, ponies and Pokemon who lived there. It wouldn't be long before everyone had undergone some sort of change. Some would have a more drastic change than others, depending on their personality.

Unova. Undella Town.

In Unova, Cynthia was at her vacation home in Undella Town, ready to get herself a drink. It was supposed to be a simple cup of cold water, but when the Fountain's effects came, it had a huge effect on the water. She would've gotten herself a regular cup, but after she opened the tap, a huge stream of blue and yellow water poured out.

Her eyes widened, her mouth agape, and she stared at the fountain for a moment.

Cynthia looked into the sink and saw the fountain flowing into the sink, the water gushing out at a steady rate.

She had no idea what was happening, and was frozen in shock and disbelief. Then, the fountain began to flow faster and faster, and the water began to grow, the fountain growing in size. She quickly shut the faucet off, and the flow of water slowed. The water stopped completely and Cynthia took a step back.

"What was that?" Cynthia wondered. If she hadn't had spotted it, she too would've drastically aged up, being transformed into an older version of herself.

Alas, the same can not be said for everyone else. Some in this vacation spot had already taken a drink of the Magical Water, and they too would be affected.

"Oh my."

Canterlot.

"Aahaaa! What a delight!" At Canterlot, the sound of Twilight Velvet being over the room rang through her home as she was currently holding a younger Twilight Sparkle in her hooves, over the moon. "I knew you could do it! Twilight brought me a Granddaughter! Now I have two1 You and Flurry Heart!"

"B-But I'm not-"

"You look just like my little Twily." Twilight Velvet was ecstatic. "Oh, we've got so much to do, honey! We'll have to get you all new clothes and a haircut, oh and maybe a trip to the spa! I knew Ash could do it. I had faith in him."

"What makes you think it's Ash's kid?" Night Light questioned his wife. "I don't see a hint of Ash in her. Not even in her eyes. Or even that lightning bolt birthmark.

"Of course, she is. Don't be silly, honey. It was always going to be Ash. This is our granddaughter." Twilight Velvet said to her husband. "She's just as beautiful and smart as our little Twilight. And I bet she can do magic just like her. She can probably teleport too. Come on, Twilight. Let's get a better look at you."The foal was held high, getting a good look at her face.

"Moooom...!" Younger Twilight groaned.

"Mom? Well, I don't mind if you call me Mom too! It'd be like having a second daughter!" Twilight Velvet squealed in delight. "Oh, this is a dream come true."

"It's me, Mom. The real Twilight. I-I'm not Ash's kid." The younger Twilight decided to come clean. In the end, she didn't even need to prank Twilight Velvet. She jumped to conclusions instantly.

The mare gasped, feeling a shock, but she didn't drop the foal. "S-So...No Granddaughter?"

"No New Granddaughter." Twilight shook her head as the sound of a mirror cracking echoed across the room. Twilight Velvet trembled before gently putting Twilight Sparkle. "Mmm...T-That's fine! I can still wait! Y-Yeah! I'll get a second Granddaughter later down the road for sure! I can't be disappointed! Not when I have an adorable foal here with me and Flurry Heart exists! Ahahahaha!"

"Oh dear..." Night Light muttered, shaking his head. He knew how her wife felt. She wanted new grandchildren so badly. But he didn't want to put any pressure on Twilight. "Sorry, sweetheart. Maybe in the near future.."

"So embarrassing..." Twilight Sparkle blushed, her face turning red after her mother brought up Ash. Her face was still a blushing mess, especially with the thought of her and him starting a family.

"Ahem. So...What did you get yourself into now for this to happen?" Night Light questioned while Twilight Sparkle grinned with innocence.

Kanto. Pallet Town.

A place that had not yet been affected was Pallet Town. Currently, Delia was at home, washing the dishes after Ash had a good meal. She was humming a pleasant tune and her mood was bright, though it wasn't exactly sunny. There was a bit of a dark cloud hanging above her, as if a storm were coming. Quite a rainy day today.

The water she was using had not yet been affected by the Fountain and it was normal. Delia would've finished her task by now, but then she would notice something strange. Or someone strange. The door had opened as a certain individual came through. It was Ash. Much, much younger than before.

"Hey, Mom!" The 7-Year-Old said with glee.

The sight of the younger version of her son caused her to drop her plate, dropping it in the sink and shattering it. "Huh?" She was in utter shock. "Ash?!"

"Hehe! Surprised?" Younger Ash, his body now being that of a Year Old, was grinning ear to ear. He ran over to his mom with intense energy, leaping through the air.

"You're a lot more energetic than usual, dear." Delia was caught by her child. "H-How is this possible?!"

"My friends and I tried a Fountain of Youth." Younger Ash replied, smiling. "Pretty cool, huh?! I was thinking of pranking you, but I couldn't think of anything."

"Well, you certainly came back with a wonderful surprise." Delia laughed. "This is quite the nostalgic sight. Oh, my boy." She hugged the smaller version of her child. "You're still so cute!"

"Ow, Mom!" Ash groaned. "Too tight! Too tight!"

Delia laughed, hugging the boy. "Ahaha. Sorry. I'm just so excited." She smiled and released him, letting him stand on his own. "It's been a long time since I've seen you at this age. But my, the way you ran up to me was how you used to do at this age."

"Huh. Yeah, I did." Ash acknowledged it. "Oh, right! I think it's because it affects our minds too, so I guess I'm acting like how I was back then a bit. Still, not sure how this stuff works."

"It's quite alright." Delia chuckled. Just then, the TV started playing, catching the mother's attention. They both turned their heads to the TV, seeing that it was a news report. Specifically, a report about the sudden influx of people, ponies and Pokemon growing up to become much older.

"This is the newest news we have. The phenomenon occurring in other places has now reached us." A newswoman explained, appearing on the TV. "Currently, our sources say that it is a phenomenon similar to the 'Pokémon Mega Evolution' but rather than that, the trainer is instead, transforming into an older form of themselves. It seems to be something in the waters that causes this."

"Wait, are they talking about me?" Younger Ash tilted his head.

"I don't think so." Delia agreed. "It seems to be the reverse of that."

"We've confirmed the water has magical properties and has changed the entire biology of the individuals, making them much stronger, faster, and even changing their appearance slightly." The newswoman added. "It doesn't just age them up. The source of it seems to have come from Manehattan as a fountain had suddenly spawned there."

"Woah! So everyone's growing up?!" Ash was shocked by this. Quite a sudden surprise considering what he was doing.

"Now, this has raised a few problems." The newswoman continued. "Certain cities are currently being overrun by the children who are now much older. Reports say that adults cannot do much in their current elderly states. Location after location is being flooded with children running amock. Some have even started taking over places such as stores, businesses, homes and other important buildings. A current hotspot appears to be here."

The place shown on the screen was the shopping centre of Manehattan, where it all started from. In just a few minutes, the children have overtaken the entire shopping center, declaring it to be theirs.

"Goodness. Little rascals." Delia smiled at this while Ash hopped out of her grasp.

"Oh, man! I gotta get down there!" Ash exclaimed. "This is gonna be fun! But uh...I also gotta stop them too. I don't know what's going on but it can't be good."

"Ah, Ash. You haven't changed at all." Delia chuckled, turning her head towards the window, watching the clouds.

Ash laughed, running out the front door. As he left, his mother had a certain memory hit her. A memory of when her husband had left for his adventure, and when she had said those same words to him. She knew that one day, her child would go out and make a life for himself, just like her husband did. But this was quite a nostalgic sight.

The rain would soon follow and it was pouring heavily. Delia watched her son leave, watching him run outside. The boy didn't even bother bringing his umbrella. He was soaked by the rain. Unbeknownst to him or even Delia and Pikachu, the raindrops had been affected by the magic. At this very moment, very slowly, Ash was beginning to age up but at a much slower rate as the journey continues.

Chapter 590 End.