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

This has been in my head for awhile now. So I had to write it out.

"Woooow!" Plutia gasped as she saw Lowee's Basilicom for the first time. "It's so huuuuge!"

"Yowza!" Neptune's eyes sparkled as she saw how tall, wide and huge Lowee's Basilicom was. "Quick! Plutie! We need to build our Basilicom even bigger!"

Noire gave the two Planeptune CPUs an annoyed look. "If you did that you'd have less time for sleeping and gaming."

"Ack!" Both Plutia and Neptune's eyes went white and blank at the thought of missing naps and game time.

"I'd hate to miss gaming too."

"Neptune's the same way." Noire nodded before blinking. "Wait, who said that?"

All three CPUs looked around before finding a young girl, about the same height as Plutia, with short blonde hair, green eyes and she was wearing a light green school-girl outfit with a short, white skirt that left her thighs visible, a green X-shaped cover on her chest, black leggings that went from her feet to half-way up her thighs and cute green shoes with white trim on them. She smiled at them and waved. "Is this your first time in Lowee?" The three nodded and her smile got bigger. "Mine too!" She looked at the Basilicom and gasped in awe. "It's so cool!"

Neptune giggled and nodded. "Yeah, who would have thought Blanc would go all bigger is better like this?"

"You know her?" The girl asked Neptune.

"Well, kind of..." Neptune giggled while rubbing the back of her head. "But man, I bet you could have lots of game rooms in this place, huh?"

"Yeah!" The girl grinned at Neptune. "What's your name?"

"Me?" Neptune smiled and pointed to herself. "My name's Neptune. This is Plutie," she gestured to Plutia, "and this is Noire." She pointed at the last girl. "What's your name?"

"Me?" The girl smiled at Neptune. "I'll tell you later." She winked at Neptune and suddenly latched herself onto Neptune's arm.

"Eh?" Neptune blinked in confusion. Sure, she was good with kids, but this seemed a bit... Weird, even to her.

"Aww..." Plutia smiled at Neptune. "Neppy made a new friend."

Neptune blushed softly as the girl practically nuzzled her. "Well..." She looked back at Noire and gave her a smirk. "I can make friends of people I just met and you're still a loner."

"HEY!" Noire yelled indignantly while the girl giggled. "Whatever, sorry girl, but you need to let go of Neptune, we need to meet the CPU of Lowee and there's no telling if she'll be violent or not."

"Aww, okay." The girl smiled and let go of Neptune. "Bye bye!" She ran off after waving goodbye.

"She was nice." Plutia smiled as they walked into the Basilicom.

(-)

Later...

Noire, CPU of Lastation, twitched in annoyance as White Heart, who was in her human form, suddenly started crying. "Whaa?!"

"Teacher!" Neptune yelled with an angry expression on her face, her eyes white and blank. "Noire made Blanc cry!"

"Hey!" Noire's eyes went white and blank as a result. "Don't make me out to be the bad guy here!"

"There, there..." Plutia smiled and patted Blanc on her back. "It'll be okay."

Blanc glared at her. "So you came here to steal what shares I have left? Between the two of you, you've done enough to steal all that I have. Just go ahead, laugh at me already."

"Nah." Neptune shook her head and Blanc looked at her. "I didn't come here to laugh at you. Noire was the one who wanted to talk to you."

"Hmph, there's no point if she's become this..." She trailed off as she heard a giggling sound. "Wait, who..?"

"Ta-da!" That same blonde girl from before suddenly burst around the corner, smiling brightly. "Hey, everybody!"

"It's the mysterious girl!" Neptune pointed as she saw the small blonde girl. "And here I thought she was a one-shot character the author put into the story for no reason!"

The blonde pouted at her. "That was mean. And I was going to take you to this really awesome diner I came across when we left."

Neptune perked up. "Really?" She giggled and rubbed the back of her head. "Sorry, sorry, I didn't mean to sound so mean then."

"You mean it?" The blonde girl perked up and smiled. "Then... Yay!" She produced a key and used it to unlock the door. "After you beat up that bald bad guy, I'll see you." She winked and ran off, her skirt billowing in the wind.

"Your girlfriend?" Blanc asked Neptune, who blushed and giggled.

"Nah, I don't know her name even." She rubbed the back of her head.

"You know that you agreed to go on a date with her, right?" Noire smirked as Neptune turned bright red. "Well, whatever, but I wouldn't date someone without knowing her name."

"Aww..." Plutia smiled and clapped her hands. "Neppy has a girlfriend."

"I don't even know who she is!" Neptune protested as the four of them left the dungeon to go deal with Mr. Badd. "Besides, what are the odds that I'll run into her again?"

(-)

A bit later...

"PLEAAAAASE FORGIVE ME!" Mr. Badd cried out as Iris Heart and White Heart tormented him on live television.

"Uh, maybe we should turn this off." Neptune muttered and looked at Noire, who nodded. "Well, that's all the time we have for this. Now you know it was the Seven Sages that tricked White Heart to doing what she did."

"HEY!" White Heart stormed over and grabbed the mic from Neptune. "Listen up! None of you better stop believing in me again, you hear me?!"

"And we're done." Neptune sighed as the camera turned off. "Um... Plutie..." She sweat-dropped as Iris Heart pulled on Mr. Badd's hairs. "Come on, he's bald enough, you don't need to rip out what little hair he has left, do you?"

"Oww! Please listen to your friend! Oww!" Mr. Badd cried out.

"Oh fine." Iris Heart rolled her eyes and let go of Mr. Badd before giving him a kick in his butt. "Now get out of here." She huffed when he let out a pitiful whimper while scrambling as fast as his fat body allowed him. "Such a pity."

Neptune sighed heavily and shook her head. "Got anything to eat? I'm hungry."

"Weren't you going to meet with that blonde girl?" Noire asked and Neptune gave her a shy smile. "Don't tell me you forgot."

"Nah, I just don't know where she is." Neptune laughed softly before blinking as she heard a giggling sound with a pitter patter of fast-moving feet. "Huh?"

"There you are!" The blonde girl smiled and pointed at Neptune. "Come on!" She ran up, grabbed Neptune's arm and dragged her off. "I know this awesome place! Let's go!"

As Neptune was dragged off, Noire had an amused look on her face. "For a one-shot character, she sure got a lot of attention, didn't she?"

(-)

A few years later...

As they walked through Halo Forest, Nepgear looked at Neptune nervously. "Um, Neptune? Have you met the Vert of this world yet?"

"Nope." Neptune shook her head. "It's the weirdest thing too, you'd think she would have popped up already to tease Blanc or something."

Blanc gave Neptune a flat stare. "About what?"

Neptune gave her a small smile. "Nothing, you'll find out when we meet her." Personally she was beginning to miss Blanc's reaction to Vert and a good old fashioned teasing about boob sizes was just what was needed to send her into a giggling fit again. "Hmm?" She blinked a few times as they came into a clearing and saw a head with blonde hair on the other side of a large rock. "Oh! Is that Vert?! Yoo hoo! Vert! Verty! Vert Vert! Did you fall asleep waiting for us?"

There was a giggling sound and Neptune gawked as the person who stood up and walked out from behind the rock with her arms spread wide. "Nep-WAAAAA?!"

"Goodness?" Nepgear gasped and put her hand up against her mouth. "THIS is Vert? She... She... She's so small!" She couldn't imagine a Vert without giant boobs, but this girl was about the same size as Uni in boob size.

"Oh!" Plutia smiled. "Neppy's girlfriend is Vert?"

Noire gave Neptune an amused look. "How did you not know this was Vert? You went on a date with her."

"I was concentrating on food!" Neptune whined.

"I knew you'd come," the young girl, Vert, smiled at the group. "And now I can show you that I'm the best CPU in Gamindustri." She pouted at them. "But you could have chosen a better time! I had to turn my game off!"

"You were gaming while waiting for us?" Blanc asked.

"Sounds like Vert." Neptune nodded and her eyes widened. "Wait! No! Vert! Wait!"

The young girl blinked. "What is it?"

"You wouldn't happen to have a spare CPU Memory on you, would you?" Neptune really did hope that Vert had one, because otherwise this trip would be a waste for Nepgear.

"Huh?" She blinked and looked at the group again. "Oh! There's someone that looks like you. Who's she?"

"I'm Nepgear." Nepgear smiled at Vert. "I'd really like it if you had one of those on hand. I can't transform right now."

"Hmm... I might have one." Vert said and looked Nepgear over. "But I don't see why I should give one to you. After all, I'm challenging the CPUs of Gamindustri to prove I'm the best. Why would I want to fight five CPUs?"

"She has a point." Blanc nodded, "why would she want to fight five CPUs?"

"Hmm..." Neptune tapped her chin. "Hey, Vert would you please give Nep Jr. a CPU Memory?"

"Well..." Vert looked a little unsure. "Will you do me a big favor then?" Neptune looked a little confused, but nodded. "YAY!" She threw her hands into the air while she cheered. "In that case!" She reached into her pockets and pulled out a CPU Memory. "Here!"

"Oh! Thank you!" Nepgear smiled and took it. "Well, here I go." Activating the CPU Memory, she smiled as she transformed into Purple Sister. "Yay! I did it!"

"Wow!" Plutia's eyes sparkled. "Neppy Jr. is so pretty."

Vert nodded. "Yeah. Anyway," she was engulfed in a white flash of light and when it ended, she was in her HDD self. "Call me Green Heart like this."

"Uh..." Both Neptune and Purple Sister gawked at the transformed Vert. While her hair and eyes were the same color that they knew, Green Heart's hair was a short and loose ponytail, her outfit was primarily black and was as revealing as they expected, with her chest and upper abdomen mostly exposed along with her thighs and she was only a bit taller than she had been in her human form.

But what shocked the Nep sisters was the fact that Green Heart, this Green Heart, wasn't extremely busty. "Goodness!" Purple Sister gasped in shock. "She's about as big as Uni is." She blushed at the look Neptune gave her. "...What? I bathe with her, you know that!"

"Hmmhmmhmm.." Green Heart's voice was just as girly as her human form's voice, everyone noticed. "Let's see... It's time to fight." She held her left arm out and a guard formed over it with a blade sticking out of the tip. "But fighting five CPUs would be tough..." She ignored Noire and Blanc as they transformed while focusing on Plutia, who had just joined them. "Hmm... Oh Neptune!" She smiled sweetly at Neptune, who hadn't transformed yet. "Can I ask for that favor now?"

"Uh..." Neptune sweat-dropped. "I hope you aren't asking for Nepgear to join you, because I'd have to say no to that."

Green Heart tilted her head in confusion. "Nepgear?" She looked at Purple Sister and shook her head. "No no! No way!" She pointed her right hand at Neptune. "I want YOU to join me and fight the others."

"Well, if that's all..." Neptune smiled while giggling before realizing what Vert had said. "Wait, what?" Her eyes went white and blank.

"Why Neptune?" White Heart asked as she looked at Green Heart in confusion.

"Because," Green Heart sighed as she gave Neptune a look that could only be described as pure adoration. "She's the perfect girlfriend! She hates to work! Loves video games! And she laughs at my jokes!"

"But the one with the squirrels was funny." Neptune protested. "Boy, this is weird, I mean, I'd expect Vert to want Nep Jr., not me."

"And the reason she likes video games and hates work is why you want her?" Black Heart asked, trying to wrap her mind around that. "...How does that work?"

Green Heart closed her eyes, crossed her arms over her small chest and huffed as she floated there. "She knows what it's like to have an annoying person in charge nag on you to do work you don't want to do, day in and day out."

"Yeah, but Histy's just..." Neptune tried to protest when Green Heart opened her eyes.

"And she likes all video games!" Green Heart squealed in delight. "She's the perfect girlfriend!" She gave Purple Sister an annoyed look and huffed. "I bet you're the kind of person who's a complete wall-flower, does your best to please everyone, never gets into trouble for anything, even if you screwed up and everyone always praises you, huh?"

"Uh..." Purple Sister blinked in confusion. "...Do I?"

Both Black and White Heart shrugged at her.

"Can you get to the point?" Iris Heart asked her.

"My point?" Green Heart asked. "Why do you think I became a CPU?" She smiled brightly. "After all, mom can't make me do homework, clean house or claim I'm lazy for playing games all day if I'm the CPU, now can she?"

"...She's the perfect girlfriend for Neptune." Both Black and White Heart said at the same time.

"Goodness!" Purple Sister gasped in shock. "I'm so used to Vert trying to get me, I'm not sure how to react in this situation."

"Uh..." Neptune sweat-dropped as both Black Heart and White Heart pushed her over to Green Heart. "No offense, but why me?"

"Well..." Green Heart smiled at her. "You not only love video games and love to play them all the time, but you're not an old hag like that girl," she pointed at White Heart, who twitched and glared at her, "you're not overly serious like that stupid whiner," she pointed at Black Heart, who growled at the insult, "you're not annoying like little miss perfect here," she pointed at Purple Sister, who looked saddened by the insult, "and you're not a scary psycho bitch like her."

Iris Heart twitched. "...Neppy, if you move out of the way, I won't hurt you while I teach her a lesson."

"Uh..." Neptune sweat-dropped at the angry looks on everyone faces before transforming into Purple Heart. "I have this feeling that if I do, you'll permanently hurt Vert, sorry, Plutie, I can't let you do that."

Green Heart let out a girlish squeal. "And this is why I love you so much, darling! You go from someone who's silly and loves video games to a cool big sister!"

"...Darling?" Purple Heart muttered in confusion and sighed at the looks her friends were giving her. "...This is going to suck, isn't it?"

She just hoped that her main character plot armor still applied.

There is concept artwork of Ultra Vert as a child, including a child Green Heart and I couldn't help but run with this.

Plus it would be different for her to go after Neptune rather than Nepgear. Seriously, I would have loved a young Vert for Re;birth 3.