The next morning came along and Pikachu woke up, but things seemed quite different than usual when he opened his eyes; he looked up at the ceiling and realized that it looked much bigger than last time.
“Huh? Why does my room look...bigger?” he says to himself, looking from side to side as he lays in his bed.
Pikachu sits up, but squeaks in surprise when he hears a crinkling sound; he looks down and is even more surprised to notice a plain white diaper between his now smaller legs.
“What?!” he says out loud this time. “I’m a baby now? No, there’s no way this is real. I must be dreaming.” he closes his eyes and pinches himself only to find that nothing has changed once he opens his eyes again. “Great, just great. First I have to take care of a baby, now I’m a baby myself.”
His ears suddenly perk up when he hears the sound of faint laughter within his room.
“Huh? Who’s there?” he barks before the Jirachi from last night appears right in front of him, still slightly giggling.
“What? What the heck is a mythical Pokémon doing here? Was it you who did this?” he asks angrily.
“Why yes it was.” Jirachi responds innocently. “Don’t worry about it too much though, everything will be back to normal by tomorrow, hehehe~”
“Grrrr, what is the meaning of this?. Is this all just some stupid joke of yours?” he asks with a pout.
“Admittedly, a sight like this is quite humorous, but I assure you this isn’t some elaborate joke, for I’m just doing my job. This is what you wished for, was it not?” Jirachi replies.
“What are you talking abo-“ Pikachu suddenly remembered what he had said last night prior to being regressed.
“Maybe...maybe being a baby doesn’t sound awful at the very least.” he had said to himself just before falling asleep.
“Oh come on! I said maybe! Maybe! I didn’t wish for this and you know it!” the diapered rat says with another pout.
“Oh? You’re accusing me of being a liar now?” Jirachi says with another giggle. “I am the Pokémon of wishes, I am the Pokémon who knows the deepest desires of everyone and everything in this world. If there’s anyone in this room who’s a liar, it’s probably you.” Jirachi says with another giggle before quickly disappearing.
“What’s that supposed to mean? Hey! Get back here!” the regressed rat groans and gets out of bed, knowing that his efforts are futile at this point. “Well, at least it only lasts for a day, though I still have to deal with my brother too.” he says with another groan before waddling over to his little brother’s room, his diaper restricting his movement.
Upon reaching the other room, the baby Pichu squeaks and giggles playfully at this new sight.
“Hehehe, what? You a baby now too?” he asks with another giggle.
“Look, the less questions you ask, the better.” he responds with a glare. “Don’t think any of this means I’m not in charge.”
“Hehe, if you say so!” Pichu laughs and starts bouncing in his crib.
The regressed Pikachu sighs and waddles over to his little brother’s crib; it takes him longer than usual to undo the bars due to his smaller hands, but he eventually manages to do it.
“Okie, now wets get someting ta eat!” Pichu jumps out of his crib and quickly makes his way downstairs.
“Yea, sure thing.” he also makes his way downstairs, though the fact that he’s not used to walking around in his diaper makes this process go by far more slowly as it rustles and crinkles in response to his movement.
“Man, I don’t get how my baby brother is able to move in these diapers.” he says to himself once he’s downstairs.
He notices his little brother open up a cupboard, taking out a jar of banana flavored baby food before waddling over to the living room and sitting down; the regressed rat waddles to the cupboard as well, groaning in frustration since the jars of baby food are the only think his small body is capable of reaching.
“Guess I have to settle for this.” he says to himself as he grabs a jar of strawberry baby food from the bottom of the cupboard and waddles over to this brother, sitting across from him with a loud crinkle.
“Hehe, now wets eat!” his little brother says happily; he opens the jar and starts eating the baby food with his hands, getting it all over his face and cheeks.
Pikachu opens his jar of baby food, scooping up a small amount of the strawberry flavored mush before placing it in his mouth. To his surprise, his taste buds were greatly pleased by the sweetness of the strawberry mush and he couldn’t help but continue to eat, getting it all over his face and cheeks just like his little brother; in all honesty, he was kind of enjoying the freedom of messily eating his food without needing to abide by any kind of manners or etiquette, though whether this enjoyment was purely due to being regressed was unknown.
Pichu was also happily eating his banana flavored baby food, though the little rat also had something else in mind as his jar started to empty; he giggled mischievously before scooping up some of the baby food and throwing it at Pikachu, landing a direct hit on his head.
“Hey!” “What was that for?” he said with a mix of surprise and annoyance.
He wanted to get angry at his little brother for doing that, yet for some reason that anger quickly subsided and was replaced with a playful giggle.
“Huh, why do I feel so relaxed all of a sudden? I feel like I should be angry at my baby brother but I’m...not? Is this a side effect of being regressed?”
However, he quickly sets that thought aside and scoops up some baby food before throwing it at Pichu in retaliation; these silly antics quickly devolved into a full-fledged food fight between the two rats, causing some of the baby food to splatter on the walls and all over their bodies as they threw the rest of their jar’s contents at each other.
When the food fight reached its end, they plopped onto their bottoms and laughed. He may not have wanted to admit it, but Pikachu was enjoying himself in this regressed state; he felt a great sense of freedom from the act of playing with his food, as he’d likely be heavily scolded for doing something that was deemed immature for his actual age.
“Hehehe, dat was fun!” Pichu giggles and cleans himself by licking his face and scooping up the rest of the baby food on his body before putting it in his mouth.
Pikachu does the same, but it’s not long before he feels a certain pressure from down below, his bowels now being far weaker in this regressed state.
“Noooo, come on! It’s already bad enough that I’m a baby! I’m not gonna poop my pants like a baby too!” he says to himself as he does a dramatic potty dance, putting both his hands on the back of his diaper and stomping his feet in place.
“Hehehe, you gonna go poopy!” Pichu says with a laugh upon noticing Pikachu doing a potty dance.
He feels his bowels shift, straining and continuing to clutch at the back of his diaper as he desperately tries to hold it in.
In spite of his resistance, his bowels only continue to shift before he eventually loses control.
A warm and squishy mass plops into his diaper, causing a bulge to form in the back.
“Ewwwww, gross!” he recoils at the rancid stench coming from his own diaper.
“Hehehe, tinky diapees awen’t dat bad!” Pichu says with a giggle, playfully wiggling his bottom before he gets into a squat.
Pichu drops an even bigger and stinkier load into his diaper as it bulges and protrudes in the back, giving a dopey sigh of relief and patting the back of his diaper.
“Ugh, seriously? Yea, that’s easy for you to say cause you’re used to pooping your diapers all the time. Now, I don’t know about you, but I’d rather not be standing in my own filth.” Pikachu says with a sigh, recoiling as an even more rancid odor emanates throughout the room.
The rats make their way to Pichu’s room, their mobility reduced to a slow waddle due to the bulky messes in their diapers. However, upon entering the room, they run into the predicament of being too small to reach the supplies they need.
“Mind giving me a lift?” Pikachu asks, glancing at his brother.
Pichu then lifts him up, and after a few moments, Pikachu jumps up and grabs onto the top of the changing table; he squirms as the weight of his messy diaper slightly drags him down, but he is eventually able to climb his way up. Pikachu grabs the pack of diapers, the box of wipes, and the bottle of baby powder and throws them to the ground before carefully making his way down from the changing table.
“Alright, now lay down so we can get this over with.” he says to Pichu.
Pichu nods and lays on his back before Pikachu starts to undo the dirty diaper; he initially fumbles with the tapes due to his smaller hands, but he soon manages to untape it before waddling over to the trash bin and plopping it in there. Pikachu then waddles away from the trash bin and takes out a few wipes from the box, wiping Pichu’s bottom before powdering it and snugly taping a clean diaper around it.
“Now ish youw tuwn!” Pichu says as he stands back up.
“Yea, I know, just try to be quick about it...” Pikachu replies as he slowly lays down, trying his best to not sit in his own mess.
Pichu slowly untapes the dirty diaper and starts wiping Pikachu’s bottom; he squirms and fidgets in response to the cold wipes, but he couldn’t deny that having someone clean up his own messes for him was nice in its own right. Pikachu’s bottom is then quickly powdered and diapered before he stands back up.
“Well, since that’s all over with, what should we do now?” Pikachu asks, looking at his brother.
“I wanna pway outside!” he replies with a wide smile.
“Didn’t we already do that yesterd-“ Pichu excitedly runs downstairs and out the door before he can even finish his sentence.
“Oh, alright, guess it wouldn’t hurt to go outside for a bit.” he says before waddling downstairs and making his way outside.
Pikachu walks onto the grass, though something about it feels different compared to yesterday; it has a softer and more cushiony feel to it, giving him an extra spring to his step. These new sensations give him a sudden urge to run around in the grass, and that is exactly what he did; the regressed rat ran and frolicked around the grass for a little bit, smiling while doing so.
“Hehe, you wanna pway on da pway stwuctsha too?” Pichu asks from the top of the play structure.
Pikachu stops running in the grass and nods as he starts waddling to the play structure. Perhaps it was cause of his regressed state, but climbing up the play structure also proved to be quite the enjoyable experience; it was like he a climber making his way up a colossal mountain range as he slowly but surely made his way up to the top, taking in the view of the house and the grass upon reaching the top as if he was looking at the vast horizon below a large mountain.
“Come on, now wets go down da swide!” Pichu says before happily making his way down.
Pikachu soon follows suit, giggling and laughing happily as he plops onto his crinkly tush and slides down. After sliding down to the bottom, he gets back to running around the grass, playing and frolicking around without a care in the world. While he continues to run around, he spots a butterfly gracefully fluttering its wings; it may have been but a simple creature, but it seemed to fill his mind with a greater sense of wonder and curiosity and he couldn’t help but start chasing after it. However, as Pikachu continued to give chase, his mind came to a crucial realization.
“These pleasant feelings...they’re just like the ones I had in that memory from yesterday.” he said to himself as his mind made a connection to what Jirachi had said to him this morning.
“Oh? You’re accusing me of being a liar now? I am the Pokémon of wishes, I am the Pokémon who knows the deepest desires of everyone and everything in this world. If there’s anyone in this room who’s a liar, it’s probably you.”
Pikachu realized that Jirachi was exactly right; the urge to suck on Pichu’s pacifier, the memory of him being little along with the pleasant memories that came with it, none of it was a farce. To reclaim those times of being carefree and innocent was his true desire all along, but he had kept those desires repressed.
Upon further pondering these thoughts, he realized that they stemmed from feelings of jealousy; he was jealous of his little brother for being able to live a life free of stress and responsibility, the very thing he also desired but couldn’t achieve, at least not until today. After coming to this realization, he looked back on yesterday with guilt and regret.
“My annoyance towards my little brother came from nothing but my own jealousy. I could have spent more time with him yesterday, yet I did all I could to put in as minimal of an effort as possible .”
However, this guilt soon manifested into a great epiphany.
“Being regressed has made me remember the wonderful feelings of being little, so it’s only fair that Pichu gets to have the same while he’s still young; my pettiness drove me to stifle that joy from my brother just because it was something I didn’t have, but that’s not going to be the case anymore.”
A sense of relief came over Pikachu and he eventually got back to running around in the backyard, wanting to savor the time he had in this carefree state before things returned to normal. He ran around for quite some time, but then he felt a familiar sensation from down below; unlike last time, Pikachu didn’t have any resistance towards the sensation and simply stood in place before getting into a squat.
“Mmmph!” he tensed up and gave a big push.
Pikachu started filling up his diaper, causing it to immediately start sagging and expanding. He grunted again and smiled as he felt his stinky mess continue to pile up into the back of his diaper while the front of it swelled and absorbed the contents of his bladder; it was such a wonderful feeling for him to not have to worry about abiding by the rules of potty training for a day and to simply squat and go in his diapers wherever and whenever he wanted to. Pikachu then sighed in relief once he completely emptied himself, grinning as he looked down at his full diaper.
“Wow! Youw diapee ish so fuww!” Pichu says as he gives Pikachu’s diaper a playful pat.
As if right on cue, Pichu’s tummy gurgles and he feels a pressure building from down below.
“Uh oh! My diapee ish gonna be fuww too!” Pichu giggles and gives his diapered bottom a playful shake before putting his hand on his knees and squatting.
“Mmph!” he grunts and his little tail hikes up.
Rude noises come from his bowels before his diaper is suddenly flooded with a mushy mess, causing it to quickly slump and stain brown.
His bladder then empties, causing his diaper to sag some more and stain yellow in the front; he sighs in relief and wiggles his bottom again once he’s finished.
Normally, Pikachu would be extremely grossed out at Pichu using his diapers, but due to his newfound acceptance of this regressed state, he simply laughed and wiggled his bottom as well; they played around in their dirty diapers for a little longer before eventually heading back inside and making their way to Pichu’s room to get cleaned up.
“Hehe, me fiwst!” Pichu says, being the first to lay down.
Pikachu grabs a diaper from the pack before quickly undoing Pichu’s dirty diaper, wiping and powdering his bottom thoroughly as well. Pikachu then diapers him up before laying down on his back.
“Alright, now it’s my turn.” Pikachu says, lightly kicking his feet.
Pichu smiles and quickly changes his brother into a clean diaper as well; the two rats giggle and playfully wiggle their diapered butts at each other before their tummies start to rumble.
“Heh, I could go for something to eat” Pikachu says as he waddles downstairs with Pichu following him.
Pikachu opens the fridge and takes out a container of berries before the little rats make their way to the couch and sit down.
“Hm, how about we watch some TV?” Pikachu suggests as he places the container of berries in between himself and his brother.
“Yea!” Pichu crawls to the other side of the couch and grabs the remote before crawling back to his original spot and turning on some cartoons.
The cartoons didn’t really have any defined plot or structure to them, and while Pikachu likely would have deemed them to be too senseless and childish under normal circumstances, in his regressed state, he really couldn’t have asked for better; it was very relaxing for him to simply snack on berries and absorb the mindless and silly antics of the show without much thought, all while enjoying the comfort a soft and crinkly diaper between his legs. His brother also seemed to be in this same state of relaxation as he laughed at the cartoons and messily ate his berries.
They watched a few more episodes and ate the rest of the berries before Pikachu turned off the TV; he then glanced at his brother only to notice that he was fast asleep.
“Man, has time really gone by that fast?” Pikachu says to himself as he glances through the window, noticing that it’s pretty dark outside now. After a few more moments, he yawns and feels his eyes grow heavy.
“Well, it sure has been a fun day. As much as I want to stay like this for longer, I know that I still have a little brother to take care of.”
He falls asleep on the couch alongside Pichu, though he feels a slight pressure building up after some more time passes.
“Huh, I must have eaten more berries than I thought. Well, might as well let it all out since I’ll be back to normal pretty soon.”
Pikachu softly grunted, smiling as he felt his diaper fill up with a warm and mushy mess. He sighed in relief and gave the back of his diaper a pat before drifting further into sleep with a wide grin on his face.
The morning sun eventually rises and Pikachu is the first to wake up, yawning and stretching before hopping off the couch, surprised to see the house now in pristine condition in spite of the mess he and his brother had made of it yesterday.
“Seems like everything is back to normal now.” he says to himself while he examines his body.
He smiles and paces around the house for a bit before Jirachi suddenly appears.
“Well, you seem to be much happier compared to the last time we saw each other,, don’t you think?” Jirachi says with a chuckle.
“Ha, yea, you’re right about that.” Pikachu replies with a chuckle of his own. “Anyways, thanks for making me realize how petty I was being to my little brother.”
“How kind of you to say, but you don’t need to thank me for that. Yes, I was the one who fulfilled your wish, but in the end it was you who realized your own faults, not me.” Jirachi says with a wide smile. “I will accept thanks for cleaning up the house though.” Jirachi says with another chuckle.
“So, is this where we part ways?.” Pikachu asks.
“It seems so, though perhaps this won’t be the last time we see each other. Jirachi says before promptly disappearing.
Pikachu then makes his way back to the living room, smiling and affectionately patting Pichu’s head as he wakes up.
“Morning, little bro.” Pikachu says with a wider smile on his face.
“Good mowning, big bwo!” Pichu smiles back at him.
“Hehe, sounds like someone slept well last night.” Pikachu picks up Pichu and hugs him, softly patting the back of his diaper.
“I did! I did!” Pichu giggles and happily shakes his tail, greatly comforted by the pats.
After a few moments pass, Pikachu’s ears perk up and he hears the sound of a car entering the driveway.
“Oh! I think Mom and Dad are back!” Pikachu says as he walks outside with Pichu still in his arms.
A male Raichu and a female Ampharos hop out of the car, smiling at the two rats.
“Aww, I’m so glad to see my boys again!” the Ampharos says as she hugs Pikachu and kisses Pichu on the head.
“So, how did babysitting your brother go?” the Raichu asks.
“It was great!” Pikachu looks at Pichu and nuzzles his cheek affectionately.
“I wuv you, big bwo!” Pichu says, nuzzling Pikachu’s cheek back.
“Aww, I love you too, little bro!”
Although the past two days had been quite a strange sequence of events, they made Pikachu a more caring and appreciative brother, and he was extremely grateful for that; he looks up at the sky, as if to thank Jirachi one more time, before going back inside and looking back at his brother with a warm smile.