Hyperdimension Neptunia belongs to Compile Heart, Idea Factory, Sega and whomever else worked on it.
Yellow Heart laughed as she looked at the enemies her mommy and daddy warned her about. "Wow, you guys are strong." The large breasted blonde CPU grinned as she felt a surge of power rush through her. "Mommy said this was dangerous, but that's fine, time to go BOOM!"
Purple Heart's eyes widened as she felt a surge of energy coming from Yellow Heart. "Not THAT move!" It was a dangerous technique that any CPU could use as a last resort when outnumbered by multiple opponents. While it was powerful and almost certainly guaranteed a win, the user would be too drained to keep fighting and if they screwed up and missed, well...
Swiss cheese would have less holes in it that the CPU would.
Iris Heart turned her head to look at Purple Heart. "You know what's going on, Neppy?"
"GET DOWN!" Purple Heart dove to the ground and yelled as a red aura erupted from Yellow Heart, washing over the battlefield with power and causing Purple Sister, Iris Heart, Green Heart, White Heart, and Black Heart to all cry out in shock and pain as they were blasted into rocks, trees and into unconsciousness. Purple Heart herself wasn't spared pain from the energy as it washed over the group.
"Ahahahahahahaha!" Yellow Heart laughed as the energy attack subsided and all she saw was dust and dirt in the air. "Did I get rid of all of them?" She asked and took a step forward, staggering and slumping to one knee. "Woah, I'm tired." She put a hand on her forehead as her large breasts pressed against her left leg, which was bent but upright while her left knee was on the ground. "Well, that's it, I should, huh?" She looked up and saw a small body with short purple hair and wearing a dress laying down on the ground. "Hmm, I should get rid of her." After all, if she was a CPU then she had a job as Eden's CPU to get rid of her. Getting to her feet, she walked over to the downed girl. After she got to the girl, she grabbed her by the shoulder and flipped her over to look at her face.
Seeing a cute face grimacing in pain only caused Yellow Heart to tilt her head in confusion. "Hmm, I don't know you, oh well..." She raised her clawed gauntlet into the air. "If I take you out for good, then mommy and daddy will praise me." She grinned while looking at the downed girl's body.
Seconds passed...
Which slowly turned into minutes...
And eventually Yellow Heart lowered her hand down by her side, where it hung loosely.
"Why?" Yellow Heart asked, "why can't I kill you?" When she had been holding her gauntlet high in the air, her body refused to move and in fact the thought of doing permanent harm to the girl was so horrible to Yellow Heart that she almost wanted to stab herself in the stomach rather than hurt the unconscious girl permanently. Yellow Heart might have tried to stab herself in the chest, but she figured that her big and bouncy boobies would get in the way of her claws hurting her. "H...Huh?" Yellow Heart reached up and felt her face. "Why am I crying?" Memories of a person cloaked in shadow feeding her, smiling at her, playing with her, bathing with her entered her mind. "Who's that? That's not mommy!" Growling, she grabbed the unconscious girl and threw her over her shoulder so that her head was draped across her back. "GRRR! I'm going to find out why you make it so Pea's head hurts!"
Nepgear twitched and looked up, her eyes widening in shock and fear. "N...NEPTUNE!" She yelled as she watched, helplessly, as Yellow Heart flew off with her sister. "NEPTUNE!" She screamed as the last thing she saw was her sister's unconscious face.
(-)
Hours later...
Nepgear had a truly despondent look on her face as she told her Histoire about what happened.
"I see," the Histoire on the screen sighed softly. "I truly am sorry that happened. With the situation over here the fact that Neptune has been captured by an enemy CPU would only cause problems for everyone." She bit her lip softly. "I'll have to ask Vert, Noire and Blanc if they can help manage Planeptune while Neptune's out."
"Don't worry about that, Histoire." A new voice spoke up and Nepgear's eyes widened as a smile slowly graced her lips as she saw Uni, Rom and Ram enter behind Histoire. "We can look after Planeptune while Nepgear and Neptune are gone."
"Uni!" Nepgear practically squealed in delight. "Thank you!"
Uni blushed softly as she saw her friend looking so happy. "Don't think I'm doing it for you, okay? I just want you to have something to come back to so I can prove that I'm superior to you is all."
"Yeah." Nepgear smiled at her. "Thank you."
"Please, it's not like we haven't been in this situation before." Uni's face was slightly flush as she looked away in embarrassment. "After all, when you and our sisters all got caught in the graveyard for three years, we had to watch after our nations without much help."
"Don't worry, I'll save Neptune and get us both back home if I have to." Nepgear said and blinked as the image started to fill with static. "Um..."
"Dimensional turmoil, I'm afraid." The small Histoire said as the line cut off. "Due to the fact that we're moving at one year to their one day it makes it hard for connections to remain stable."
"It's fine." Nepgear said softly. "At least I know Planeptune is in good hands with Uni, Rom and Ram."
The door opened and the Noire of the dimension Nepgear was in, along with Vert and Blanc, walked in. "I'm more curious about being caught in a graveyard for three years." Noire, in her blue and black halter top and miniskirt crossed her arms over her chest and raised an eyebrow. "The way Neptune is around here, you'd almost think that the CPUs of your world are completely incompetent or something."
"Indeed," Vert nodded, a concerned look on her face, "it almost sounds like the little sisters are better at running the nations than our other selves are."
"It's almost a wonder that your nations haven't fallen completely apart." Blanc, dressed in her red miko outfit, nodded in agreement.
Nepgear twitched as she looked at them. "You don't know how things are over there."
Noire scoffed at her. "I know that *I* would never allow myself to be captured for three years." Both Vert and Blanc nodded in agreement behind her. "And with how pathetic your sister is at so much, I mean, getting captured like that, sheesh..." She shook her head.
"Indeed." Vert nodded in agreement. "It's a miracle that she was able to last as long as she has, CPU or not."
Blanc was about to say something when she noticed that Nepgear was looking at the floor and trembling. "Do you have something to say?"
There was a flash of light and Purple Sister was hovering there for a moment before rushing forward, grabbing Noire by the throat and slamming her against the wall, glaring at her.
"GAK!" Noire gasped, utterly shocked at what Nepgear was doing.
"Now you listen here!" Purple Sister growled as all three Ultradimension CPUs stared at her in shock. "You don't know a DANG thing about what happened when we got caught. All four CPUs and I went to fight the bad guys and they had someone so strong that she makes Yellow Heart look like a fat dogoo, and if I remember, didn't all of you end up on your butts against Yellow Heart?" Her eyes were watering up as she remembered that time, being bound in tentacles, having her shares drained out, being semi-conscious for three years and unable to do anything about it, of being so powerless that she just wanted to die. "And besides that, if you want to know something, the CPUs of my world are better people than you three are. The Noire of my world helps when one of her friends are hurting, and yes, despite how much Neptune teases her for being a loner, she actually has friends, how many do you actually have?" She let go of Noire, who coughed and fell to the floor. "And you!" She pointed at Blanc, who's eyes widened. "My Blanc might be rough around the edges and almost as much of a Tsundere at times as Noire is, but at least she wasn't manipulated into making the people hate her enough to lose her shares!"
Blanc twitched at the memory. "...That hurt. Neptune told you?"
Purple Sister nodded and glared at Vert, who held up her hands in a peaceful gesture. "N...Now Nepgear, calm down, I'm sure that..."
"My Vert might try to NTR me away from Neptune, she might tease Blanc and Neptune constantly and she plays too many games," her eyes glowed fiercely in anger, "but she never made me fight against my sister! And she never broke down crying and threw a big temper tantrum when she lost!"
"Neppy Jr.," Plutia spoke up as she walked up to the angry CPU. Purple Sister glared at her and was about to speak when Plutia grabbed her and hugged her. "It's okay, I'm sad Neppy's gone too."
Suddenly Purple Sister reverted to Nepgear and buried her face into the smaller CPU's chest, sobbing hard and crying out for Neptune.
Plutia just patted Nepgear on the back and let her cry. She may have been a sadistic bitch at times, especially when she was transformed, but she genuinely did care for her friends.
And Neptune was probably her closest friend and even though she had been mean to Nepgear, Plutia still liked the CPU Candidate.
After a half an hour, Noire coughed softly. "Um, Nepgear," she waited until the distraught Candidate looked at her and she winced at seeing the genuine sorrow on her face, "I'm really sorry, I shouldn't have said those things." Her face was slightly red as she looked away. "I, um... Really."
"Me too." Blanc said softly, looking down, shame all over her face, "Neptune was there to help me when I needed her the most, I shouldn't have said those things either."
"I'm not as close to her as you all are, but..." Vert bowed to Nepgear, "please forgive my foolishness, you were right, however."
Nepgear nodded, smiling though she still looked sad. "Thank you, I forgive you, just don't do that again."
They nodded at her.
(-)
Meanwhile...
"Well, this is odd." Anonydeath, a man in a pink power armor, said as he looked at Neptune, who was unconscious and in a pod with wires connected to her at various places and a band over her forehead, as he worked his wizardry over her. "I didn't expect the bond between little Peashy and this one to be so strong."
Rei Ryghts, a blue haired woman wearing a black business suit with a horn on the left side of her head, looked at him, then at Neptune, then at Peashy, who was in another pod getting the same treatment. "S,s, so what are you going to do?" She asked, stuttering over her words.
"What am I going to do?" Anonydeath said, his voice almost sinister. "Nothing, I'm just changing some things, but there's a LOT of memories to go through with this one. Unlike little Peashy, she's been a CPU for a long time. Hmm..." What seemed like a light bulb went off above his head as an idea came to him.
"GAH!" Rei screamed and covered her eyes. "What's with that light bulb?!"
"Huh?" Anonydeath sounded confused before he looked up. "Ah! My newest invention! I call it a LED light. The whole purpose of this light is to make it painful to look at and impossible to see into the dark if you're under it as there's no ambient light, it's all concentrated in one spot."
Rei sighed as he turned the light off. "That was t, too, too painful." She stuttered. "S...So now what?"
"Give me a few days." Anonydeath sing songed. "Meanwhile, we need to announce Eden to the world."
"Y, yes." Rei nodded.
(-)
Three Months later...
In a forest between Lowee and Eden, Purple Sister groaned as she, Black Heart, Iris Heart, White Heart and Green Heart faced off against Yellow Heart for what had to be the thirty-fifth time since Eden had been announced, so far the group had lost every confrontation against Yellow Heart, but she seemed content to beat them up and then leave and only fight when they got close to Eden.
"DEYAH!" White Heart yelled as she slammed Yellow Heart with her ax, sending the extremely busty CPU flying into a rock face. "Plutia! Noire! Now!"
Iris Heart rushed in, her sword glowing with energy. "Fighting Viper!" She yelled as she struck Yellow Heart twice with the crackling sword, which exploded and sent Yellow Heart into the air, where Black Heart met her with a glowing sword.
"Tornado Sword!" She yelled as she slashed Yellow Heart and sent her crashing to the ground.
"I can't believe it!" Purple Sister's eyes lit up happily as she turned to look at Green Heart. "We're winning."
"Yes," the black-clad CPU nodded, "but we can't let our guard down, she has that very powerful explosion technique if things get bad."
Purple Sister nodded and rushed in with Green Heart.
Yellow Heart looked up, her eyes glowing. "I'm gunna make you all just..."
"Yellow Heart," a new voice had everyone stop, turn to look at the new person slowly and stare in absolute shock. "Are you seriously having trouble with these five?"
"Neptune?!" Purple Sister gasped in relief as she saw her sister in HDD hovering just off the ground, her familiar purple and black body suit, the light pink transparent strip that covered her from just above her crotch up to between her boobs and showed off her abs, her large katana in one hand and the wings on her back. "Where have you been? I was so worried about you." She called out and flew towards Purple Heart.
"Nepgear, wait!" Black Heart called out when she saw Purple Heart grip her katana tightly.
"Huh?" Purple Sister jerked in surprise as she saw Purple Heart narrow her eyes at her. Instead of the usual cool, but loving eyes she was used to seeing, she saw cold indifference and ego in those eyes. "Neptune?"
"You think you can call me by that name?" She sneered before rushing in and slashing at Purple Sister, who could barely block the attack. "Nice block, too bad you're still open." Pushing hard, she forced Purple Sister's arms back and above her head before she leaned back and slammed her head against Purple Sister's face with a loud crunch sound, sending Purple Sister to the ground grabbing at her nose.
"Neppy Jr!" Iris Heart called out in shock before glaring at her friend. "It seems someone needs a spanking." She rushed forward, fully intending to deal with Neptune harshly.
Black Heart, White Heart and Green Heart all sighed in relief, if Iris Heart was fighting Purple Heart, then they wouldn't have to.
Iris Heart stabbed at where Purple Heart was, only to stare as she twisted to the side and the blade missed her chest and shoulder by scant millimeters. Turning the stab into a slash, Iris Heart watched as Purple Heart leaned back to avoid the slash and flipped her body so that she was upside down. Then, to everyone's shock, Purple Heart kicked at Iris Heart, who was forced to block over and over again as not only did Purple Heart do stomping-style attacks, but she spun and kicked before flipping back up, her feet hitting Iris Heart on the head and knocking her off balance. "Neptune Slash!" Purple Heart called out before slashing twice in an X-pattern so fast that it looked like one slash and Iris Heart, off-balance and stunned from the kicks was sent crashing to the ground, where she reverted back to being Plutia.
"No way." Black Heart gasped, her eyes wide. "She beat... Iris Heart... On her own?"
"How the HELL did she do that?!" White Heart gawked, unable to hide her shock.
"...Is this how Neptune fights when she's truly serious?" Green Heart asked, unable to believe it. Suddenly a truly terrifying realization came to her. "If she's truly capable of fighting like this, what kind of monster was able to beat and capture her and the other CPUs of her world for three years?"
Both White and Black Heart instantly paled as they realized that Nepgear hadn't been saying that to mess with them, that whomever was strong enough to do that would have made Yellow Heart look weak in comparison.
"AHAHAHAHAHAHAHA!" Yellow Heart laughed as she flew over to Purple Heart. "You're so strong, Purple!"
Purple Heart smirked at her and looked at the other CPUs as they gathered their downed comrades. "You know, how about we end this right now?"
"Yay!" Yellow Heart bounced, literally, in excitement. "Let's do that special move!"
"Yes." Purple Heart nodded as they both started to glow. "Let's go, HDD Yellow Heart!"
"YAY!" Yellow Heart yelled as she glowed brightly and transformed into a gauntlet that flew forward. Purple Heart rushed forward and punched forward.
"Punching connect!" Purple Heart yelled as her fist slammed into the gauntlet.
"Purple, this feels weird, but kind of good." Yellow Heart's voice came out of the gauntlet, sounding a bit flustered and weird.
Purple Heart ignored her as she held up her gauntlet-covered fist before pointing it at the other CPUs, who were looking at her in shock. "Here we go... ROCKET... PUUUUUNCH!"
When the gauntlet was launched at the group, Nepgear, who had reverted back after her sister headbutted her, could only bite her lower lip in dread. "As Neptune would say... Oh fish sticks."
When the fist collided with the ground with a loud explosion that knocked all of them out, she was proven right.
Part 1 of ? (probably 2)
Just an idea of "what if Neptune was taken in by the Seven Sages and fought against her friends?".
What happens next? You'll have to see in the next part when I write it up.