Hyperdimension Neptunia belongs to Compile Heart, Idea Factory, Sega and whomever else worked on it.

It was a pleasant day in Planeptune, the sun was shining, people were having fun at the local park, and the CPU was in a pitched battle against her sister.

Histoire could only stare as the sisters battled it out, normally she would be trying to stop them, but this was so intense and amazing that she couldn't bring herself to stop them.

"I've got you this time, Nepgear." Purple Heart said as she made her attack.

"No you don't! I'll win this one!" Purple Sister declared as she countered Purple Heart's attack with one of her own.

"No way." Purple Heart's eyes widened as she saw the results. "That's not... It's not possible! I can't lose here!"

"I got you!"

"K.O.!" The announcer yelled as Purple Heart's character in the fighting game was laid out. "Player Two Wins!"

"YAY! I won!" Purple Sister cheered as she jumped in the air.

Purple Heart shook her head as both of them returned to their human forms. "A bet's a bet, Nep Jr., I'll skip the game conference to go to that tech conference with you."

"Thanks, Neptune!" Nepgear smiled happily. Sure, she could have gone by herself, but she wanted to spend time with Neptune. She had asked Uni, but Uni had stated she was going to be spending that day with Noire and Nepgear didn't want to be alone. While she could have asked Vert, she was a little worried the other CPU would try to NTR her away from Neptune again.

Neptune was a little sad, she really wanted to go see the new games, but seeing how happy Nepgear looked, she could put up with it. "So it's in three weeks, right?"

"What's in three weeks?" A new voice spoke up and Neptune and Nepgear turned to see IF walking into the living room.

"Hey, Iffy!" Neptune smiled happily. "We were just talking about a tech conference that Nep Jr. really wanted to go to." She tilted her head and blinked before her eyes widened. "AH! It's little Iffy!"

IF blushed as Neptune pointed a finger at her. "Don't call me that! Sheesh, ever since the two dimensions synced up and we could move back and forth freely, you took to calling me and Compa little before our names."

Neptune giggled and got up before running over to IF. "Well, how else are the readers supposed to tell you two apart if you're here with my childhood friend?"

"Um..." Histoire and Nepgear said at the same time. "Neptune, while I can understand you're excited to see someone you spent a lot of time with in the other world, how were you able to tell her apart from the IF of this world?"

Neptune smiled brightly. "Heh heh heh! It's simple when you know what to look for." She pointed to IF's left eyebrow. "See this small scar here? She got that when she picked a fight with a boy when she was twelve and ended up needing stitches."

"I remember that." Nepgear nodded, "that was a deep cut, she was lucky there wasn't any brain trauma."

IF blushed hard. "He was picking on Compa and you guys were busy dealing with Eden back then." She'd do it again in a heartbeat for Compa too.

"And then here." Neptune pointed at IF's left ear. "She's missing a little bit of her ear from when she and I were at the river skipping rocks across the water, one of the rocks I threw hit a big rock and came back really hard. You were eight, right?"

IF nodded, remembering that time. That hadn't been fun. "At least I'm not missing a big chunk of my ear." It was why she wore her hair long on one side.

Neptune grabbed IF's right hand and lifted it up. "And the finger-less glove on her right hand is thicker than the one on her left from that time she rode a bike when she was thirteen and broke her hand in several places."

Nepgear winced, IF had been a real mess from that accident, cuts and bruises everywhere.

"I bet I can still find where your chicken pox marks were if I took your shirt off." Neptune grinned and IF groaned in dismay.

"Please don't, that was an embarrassing time."

"What happened?" Histoire asked and Nepgear giggled nervously. "Nepgear?"

"Well..."

*Flashback...*

"Nep..." IF, a young girl of eight years with brown hair, green eyes, who wore a blue coat with shorts and a tank top under it, was looking a bit sick at that moment. "I don't feel good."

"Uh oh." Neptune stared in shock. "You've never gotten sick before." She put her hand on IF's forehead and her eyes widened. "Oh wow, you're burning up."

IF was panting and sweat was forming on her forehead. "I..."

"Come on, let's get you out of those clothes." Neptune didn't even wait as she stripped IF down to her panties and stared in shock. "What's with all these splotches on your skin?"

"Huh?!" IF looked down, staring in horror. "Wh...What's going on?"

"Iffy! Nep Nep! Ge Ge and I are... Iffy!" Compa, a young blonde girl about the same age as IF, stared in horror as she saw IF. "What's wrong?"

"Uh oh." Nepgear gasped as she saw IF. "Are you okay?"

IF shook her head. "I don't feel good."

"Hey..." A drowsy voice spoke up as a young-looking girl with lavender-colored hair in pastel-colored pajamas walked into the room. "Why is everyone so... Oh, Iffy's getting Chicken Pox."

"Chicken Pox, Lady Plutia?" IF was a bit relieved, at least that sounded normal enough if Plutia recognized it at a glance.

"Waaaaaah!" Neptune suddenly shouted, her face pale as she jumped back and pointed at IF. "You mean Iffy's going to turn into a chicken?"

"Goodness, what?!" Nepgear's pupils shrank in shock. "We're going to have an IF hen running around?"

"NOOO!" IF put her hands on her cheeks and started to panic. "I don't wanna be a chicken!"

"But that's..." Plutia tried to interrupt.

"Oh, Iffy! I'm sorry." Compa pouted, she didn't want IF to become a chicken. "But I'm sure that you'll lay really tasty eggs."

"NOOOOO!"

A flash of light caught everyone's attention and everyone suddenly tensed up as Iris Heart stood there. "Now that I have all of your attentions, calm down. First of all, Neppy, don't give poor Iffy bad information. Iffy, Chicken Pox is just the name, you're not going to turn into a chicken. You will, however, need to get some creams for your skin because you will be very itchy and drink plenty of fluids."

"Oh." IF sighed in relief, she really didn't want to be a chicken.

"Compa, make sure you stay close to Iffy, okay?" Iris Heart smiled at the little girl who nodded. "Anyway, it's something that I got when I was younger, before I became a CPU. It'll go away on it's own, but it's miserable while you have it."

"Oh." IF nodded and sighed in relief as Iris Heart turned back into Plutia.

"Oh, and Iffy, don't scratch, it'll get worse if you do." Plutia told the young girl, who nodded.

Within the hour, Compa would start to develop her own Chicken Pox symptoms and the two were laid up for almost two weeks.

*End Flashback*

"Turns out that was a really bad case of Chicken Pox." Nepgear finished her narration. "It was kind of fun nursing Compa and IF though. Compa slept most of the time but IF wanted to run around and play."

IF grumbled. "And mine came back only three days after it cleared up even!"

"Yeah, you really had it bad, you kept recovering and then getting it again for almost six weeks." Neptune nodded at her. "So what's up? I'm sure that you didn't just come here to talk about old injuries or see if I still have the photos from when you and Compa had to practically bathe in cream to keep you two from scratching the sores."

"Neptune," Histoire spoke up, "how is it that you were able to tell this IF apart from our IF so easily? Surely such detail is generally below your notice."

"Well," Neptune giggled softly. "It's simple, really, this Iffy isn't as good at pulling off the deadpan snarker look as our Iffy is." She laughed as both Nepgear and IF face-faulted at that.

"You're still the same as ever." IF grumbled as she got up. "Um, Nep, are you busy in three days?"

"Huh? I don't think I am." Neptune tapped her chin as she looked at IF in confusion before turning to Histoire. "Histy, how bad is the paperwork?"

"For once, it's actually in decent condition." Histoire muttered, "so if you want to take a day off in three days, I don't see a problem with it."

"Sweet!" Neptune smiled brightly and turned back to IF. "So, yeah, I'm good."

IF smiled back. "Good, will you and Gear come to Lady Plutia's Basilicom around noon in three days then?"

"Sure." Neptune looked at Nepgear, who nodded. "We'd love to."

"Great!" IF smiled. "I gotta go, it's my day off and Lady Plutia got me a motorcycle for my birthday."

The others waved IF off and she ran off.

"Hey, Neptune..." Nepgear looked at her sister. "What did we get IF for her birthday anyway?"

Neptune gave her a flat look. "Remember the bike I asked you to make a few months ago?" Nepgear nodded, realization dawning on her face. "That's why I asked you to make it."

"Oh. That explains why you wanted it to be able to drive anywhere really fast then." Nepgear suddenly sweat-dropped heavily. "Did we ever figure out how IF got her bike stuck in that tree when she was fourteen anyway?"

"She went too fast and hit the curb and went flying." Neptune answered, getting a weird look from Nepgear. "I, um... Did the same thing as her and got MY bike stuck in the tree after we got hers down."

Nepgear face-faulted again.

(-)

Three days later...

"Neppy! Neppy Jr.!" Plutia smiled brightly as she saw her best friend and best friend's sister walk into the Basilicom.

"Plutie!" Neptune's eyes lit up happily and she ran over to hug her friend. "So why is little Iffy having us meet here?" She asked as the two let go of their hug.

"I don't know." Plutia said, a confused look on her face.

"NEPTUNA!" Peashy yelled as she dove, head first, into Neptune's stomach, causing her to cry out in pain as she flopped onto the floor. "AHAHAHAHAHAHAHA! You're still so weak, Neptuna!"

"Ngh, I think it's less that and more how strong you are." Neptune groaned as Peashy sat on her stomach. "Have you grown? You look like you're bigger than the last time I saw you."

Peashy just laughed. "Silly Neptuna, you know that CPUs don't get bigger!"

"Well, you do." Neptune giggled and ruffled Peashy's hair before hugging the small girl. Idly, she wondered if Peashy hadn't taken a CPU memory in when she was five if she would look something like Yellow Heart, since that was over ten years ago. She was kind of glad that she wouldn't find out, because having to beat boys or girls off with a stick who wanted to do lewd things to a busty Peashy didn't seem like a fun time.

"Okay, Peashy," Compa called out as she and IF walked into the room, "get off of Nep Nep."

Peashy smiled and got off of Neptune, who sat up and idly rubbed her stomach to get the pain to go away. "So, Compa, Iffy, P-Ko, what's the occasion?"

The three looked at each other and smiled and for the first time, Neptune, Nepgear and Plutia noticed that the older two were holding items behind their backs.

"Happy Mother's Day!" The three said at the same time and IF and Compa pulled out boxes from behind their backs.

"Nep, what?" Neptune was stunned as IF handed her a box while going over to Nepgear and giving her one as well while Compa went to Plutia and handed her a box.

"Um, but I'm not..." Plutia began.

Compa had a bashful look on her face before she hugged Plutia. "Even if you, Nep Nep and Ge Ge aren't our mothers, you three raised us from when we were in diapers, you taught us, fed us, clothed us and took care of us when we were sick, you punished us when we were naughty, played with us when we asked you to, never asked for anything from us, so..."

IF was blushing softly as she looked at Nepgear. "I know we were hard on you when we were little, Gear, but... You're just as much of a mother to us as Nep and Lady Plutia are."

Nepgear was blushing, but her face was showing pure elation and happiness. "Goodness, this almost makes all the teasing and worthless titles I got when I was living here worth it." Opening the box, her eyes started to sparkle. "Wow... Is this a wristwatch-pdf-phone?" Such things had gone out of style years ago in both the Hyper and Ultra Dimensions, but they were really cool for collectors and made for neat gadgets.

"I know how much you like gadgets, so, um..." IF was shocked as Nepgear pulled her into a tight hug. "Aaaaaaaaiiiiirrr!"

"Ooops! Sorry." Nepgear blushed as she let go of the hug. "I just couldn't help it, things like this are really rare and neat."

"Here you go." Compa smiled at Plutia, who took the box and opened it up. "I noticed you were running low on yarn and other sewing products, so..."

"Thank you, Compa." Plutia smiled as she put it down and hugged the girl. "I'll make good use of it."

Neptune smiled as she looked at them before opening her gift up. "What the..?" What she saw surprised her and filled her with a surprising amount of warmth.

Inside were two game cartridges, the labels were faded with time, but Neptune instantly recognized them.

They were the first games she had played with IF and Compa after Peashy had been captured.

"You guys..." Neptune smiled as she looked at IF and Compa. "Thanks."

"We're not done yet, Neptuna!" Peashy giggled and ran into the kitchen before coming back out with a big serving tray over her head. "Look! I made pudding!"

Neptune smiled as she took a pudding off the tray while Peashy went around the room to share with IF, Compa, Plutia and Nepgear. She looked up as she saw the mini Histoire of the Ultra Dimension float into the room. "Hey! Mini-Histy, I was wondering where you were." She giggled at the small pudding dish in her hands. "That looks big in your hands."

Histoire pouted at Neptune before smiling. "I'm glad to see you're okay, Neptune." She snapped her fingers and a small camera drone hovered up behind her. "We should get a picture of this."

"Yeah!" Everyone cheered as they got together. Neptune and Plutia sat in the middle with Peashy between them and in front of them while IF stood next to Neptune, Compa stood next to Plutia and Nepgear stood behind the group as a whole while Histoire floated over and sat on Peashy's head.

"CHEERS!" They all smiled as their picture was taken.

So there's a fic called "Mother's Day: Ultra Dimension Style" on this site, but sadly the author never did a chapter for Neptune and Plutia with IF, Compa and Peashy, so that's what inspired me to write this one-shot.