Kingdom Hearts Kairi Uzumaki The lost Sister
Disclaimer: I do not own Naruto or Kingdom Hearts. Naruto is owned by Masashi Kishimoto Kingdom Hearts is owned by Tetsuya Nomura and Square Enix respectively. Certain elements of this story were inspired by other Naruto/Kingdom hearts crossovers. Credit for the title is given to TalkingSalad12 who suggested it through a PM.
Posted July 20, 2021(Tuesday)
Word count (I am counting the AN as I put effort into writing them)-3841 words
EDIT: December 20, 2020(Friday) the PM emails notifications returned!
AN1: I am SURE people might not be happy if I choose to have Namine and Kairi paired with Naruto (I think people might be okay with Xion) bit honestly I feel MOST Naruto/KH stories are just Naruto with a Naruto-verse girl anyways. Just saying. Also Aqua is a shoo in btw.
Thanks for all the follows, faves and reviews. When I post this I was at 99 follows, 94 faves and 16 reviews!
Chapter 2 Another 'sister'
"Wait?! You are serious? He is actually your twin?" Lea asked skeptically as he tilted his head gesturing how they appeared to be physically different ages.
"Yeah! I know in my heart he is my brother! I felt it when he passed some chakra to me! I felt his heart and his soul connect to mine!" Kairi declared placing a hand on her chest while Naruto stood back with a small smile.
"Wait chakra? You mean magic?" Ventus as everyone blinked thinking Kairi had misspoken.
Naruto chuckled as he looked at his fuming twin for looked ready to unleash feminine fury at her friends (and even enemies) refusing to believe her when it came to him.
"(Kairi-chan. It is hard for them to understand as it does sound unbelievable without any real proof.)" Naruto said to Kairi gently who looked back at him with a frown.
"(Naruto-kun. Maybe they don't believe in you but they should believe in me! It just feels wrong that they can't see our connection.)" Kairi replied sadly as Naruto sighed.
"Um… What are you brats saying?" Xigbar shouted as Kairi blinked in confusion tilting her head.
"(Is he hard of hearing? I mean I am not exactly whispering.)" Kairi said as she looked over to her friends but she was even more confused and shocked when they gave her confused expressions.
"(Geez how rude can you get! Acting like I am talking gibbish to you.)" Kairi said with a frown as crossed her arms in annoyance.
"Um Kairi?" Aqua asked nervously as Kairi looked over to the older girl.
"(Hai?)" Kairi replied tilting her head.
"We haven't been able to understand anything you or him have said besides you saying each other's names." Aqua revealed as Kairi gasped and looked around at everyone and saw confusion in their eyes.
Naruto chuckled as everyone turned the amused blonde.
"What did you do to Kairi?" Sora shouted as he summoned Kingdom Key AN2: and pointed at Naruto who just raised an eyebrow.
"Me? I didn't do anything. Kairi just copied our world's natural language since we both come from that world." Naruto replied stretching his arms.
"Yeah Sora! My brother didn't do anything to me!" Kairi said back in her normal voice with annoyance clear in her voice.
"Kairi! We can hear you again!" Riku said with relief clear in his voice.
Kairi put her hand over her lips as she looked at Naruto who gave her a warm smile.
"Okay can somebody please explain why blondie and Red over there were just talking rubbish a minute ago?" Larxene demanded before she once again threw knives infused with Lightning at the barrier which did not even get dented for the effort.
Naruto turned the darkness as Kairi began to scold Sora for over reacting much to his embarrassment.
"Hmm. I suppose the best way to put it is the world Kairi and I come from. It exists outside where Keyblades and Darkness itself can reach." Naruto said after a moment of trying to simplify it.
While Aqua and Mickey looked rather uncertain such a place could exist the Seekers of Darkness were far less vocal about their opinions.
"Excuse me? Those puny Lights over there may be limited in what they can do and where they can go but there is nowhere my darkness can not take me." 'Riku' claimed with a cocky smile as eh smirked at the annoyed expressions from the Guardians of Light.
"Anywhere besides outside this barrier, right?" Naruto mocked as he pointed at the Red barrier as 'Riku' summoning his version of Soul Eater and pointing it threatening at Naruto. It did not help 'Riku' anger when he saw Riku snicker and Kairi give her brother a grin.
"Hmm I suppose he got us there." Luxord admitted with a chuckle as he ignored the glare sent by Larxene, 'Riku', Vanitas and Terra-Nort.
"Whose side are you on baldie?" Vanitas hissed as Luxord shrugged.
"I suppose the side that offers me the most. Quite frankly it might be that young man's side at the moment." Luxord explained pointing at the amused Naruto.
"Oh? Want to come over to my side and I will get rid of that piece of Xehanort heart infused inside of ya?" Naruto offered with a smile much to the surprise of the Guardians of Light.
"You can't! He has done bad things!" Sora insisted as Naruto give him a non-chalent shrug.
"Perhaps but in some cases 'bad' is based on perspective." Naruto remarked as a imagine of Nagato and Obito appeared in his mind.
Luxord looked rather intrigued even as Terra-Nort, Young Xehanort, Larxene and 'Riku' turned to glare at the gambler only just restraining themselves from summoning their weapons despite still being inside the barrier.
"You going to betray us?" Larxene hissed as Luxord raised an eyebrow.
"You and number 11 tried to overthrow the first Organization 13 and now all the sudden you are his loyal lapdogs?" Luxord brought up although he did eye Terra-Nort with a weary eye.
Before any in fighting could start Master Xehanort himself crossed his arms and his eyes grew cold.
"Enough." Master Xehanort declared as every Seeker of Darkness shuttered at the power of that single word and even the Guardians of Light were on edge. Although Naruto notably just whistled as if nothing was wrong.
'This guy is on a different level. I mean he makes Xenmas look like a puppy dog in comparison.' Donald thought as the Ancient Master presence made it clear why he was the leader of the Organization.
"Young Uzumaki." Master Xehanort said as Naruto raised his arms and jokingly pointed to himself as Sora and Riku could not help but smirk at Naruto's silly antics.
"You seem to imply your world itself is outside any perceivable realm that Darkness itself or the power of the Keyblade could reach." Master Xehanort pointed out as Naruto shrugged.
"Hmm that's one to think about it. I have a question you and everyone else." Naruto said as he walked forward so he was in the middle of the Seekers of Darkness and Guardians of Light.
"Have you ever wondered something? Every world has different cultures, beliefs and even appearances on what is normal. But why is it every world any of you have been inside you can understand what people are saying?" Naruto asked as everyone blinked as if it was the first time any had brought it up.
"Well…. I mean…" Mickey stuttered as him and Aqua exchanged looks as they were trained directly by Keyblade Masters and yet even they did not think about it.
Master Xehanort eyes widened for a moment before he became expressionless once again.
Vanitas however was not afraid to put his own opinion.
"Tch. Let me guess? There is some power out there that makes it so everyone can understand each other?" Vanitas mocked as he waved his hands and did a mock bow.
"I guess nobody really thinks about it as its pretty bizarre to think that there are beings that look like you but you can't understand what they are saying let alone thinking." Naruto remarked as Xigbar eyes widened before he bit his lip which nobody noticed.
'He is not talking about the darkness... What is he?' Luxu secretly hissed not pleased that someone was deviating from the established secret plan so much.
"Normally the worlds would be kept secret from each other to keep the established order but since everyone here comes from at least a different world from this one. I suppose there is not real point keeping it secret." Naruto mused before he sighed.
He gave a look of tiredness.
"Every world inside the Realm of Light, The Realm of Nothingness, the Realm of in between and the Realm of Darkness are all realms that started from Kingdom Hearts so it made it so all worlds could at least communicate with each other." Naruto revealed as everyone looked at him with varying degree of surprise.
"Kingdom Hearts made the worlds like this?" Ven asked with shock.
"More or less. You might think Kingdom Hearts is just a source of power but really it's the beginning of what you perceive worlds to be." Naruto clarified.
"My World has always spoken like the way I was talking with Kairi. Our world exists inside another dimension altogether. Trying to access is an idea that cannot be done with the power Light or Darkness." Naruto revealed as Kairi gasped when Naruto turned to her.
"In a way. We are aliens compared to everyone else here who was born in the Realms created by Kingdom Hearts itself." Naruto said he looked down.
"Wait! If you cannot get to your world with the Keyblade or the power of darkness, how did YOU get here from your world?" Lea demanded as everyone turned to the blonde who smirked.
"Do you think that the power of Darkness and Keyblades cannot be surpassed?" Naruto questioned before he turned around ignoring the indignant response from Lea and Donald.
"There is somebody I want to talk to from over there." Naruto said as he pointed to the barrier as he continued to walk to the Darkness ignoring the cursing from the bound members of Organization 13.
Naruto stopped as he scanned the members before he found the hooded Xion as he gave a sad smile.
"Come here." Naruto said as he waved his hand. Much to everyone surprise no more then Xion herself, Xion appeared in her hood outside the barrier in front of Naruto.
"What?! You said we couldn't get out of this stupid barrier!" Larxene complained as several members had summoned their weapons and attacked the barrier thinking it was weakened. However, the barrier held strong and still prevented them from summoning corridors of Darkness.
Naruto raised an eyebrow. "You really believe a barrier I create I cannot destroy or manipulate? That would be a very stupid barrier." Naruto retorted as he scoffed before focusing on the hooded figure who was roughly the same height as Kairi with her hood down so nobody could see her face.
"Hey! Does anyone know who the newbie in the hood is?" Lea asked as everyone shook their heads.
"No but they do seem different. More silent almost like someone who doesn't fit in with the rest of the Darkness's." Aqua said with a frown as most of the Seekers of Darkness would openly declare their allegiance to Xehanort or at least their disdain for the Light.
The Hooded figure was on a defensive position while Naruto looked sad almost like he was showing sympathy for the figure.
"Attack! Bring me his head!" Xenmas commanded as the figure turned their hooded face towards Xenmas before nodding.
The hooded figure raised a gloved hand before a familiar Keyblade appeared in their hands and they took a two-handed stance.
"That Keyblade!" Riku said in surprise as he looked at Sora before looking back at the hooded figure.
"Its just like Sora's!" Kairi gasped before Lea took his Keyblade out and summoned his chakrams again.
He turned them onto fire and threw them. They flew past Naruto who didn't look back and focused on the hooded figure. They easily batted away the chakrams and sent them flying back at Lea.
"Their stance and power. Is that Roxas?" Lea asked in surprise as Sora blinked looking at his own chest.
The hooded figure put a hand on their face and swayed almost as they were trying to remember something before, they shook their head and got back into a fighting position.
"No, its not Roxas you fool." Xenmas taunted as Saix secretly looked at Lea with a quick glance before looking at Xion.
The hooded figure yelled showing a feminine girl voice as she charged at Naruto who didn't do anything but stand there.
"Get out of the way!" Kairi screamed as she was about to rush in to help her brother.
All the sudden a cage of sand surrounded the Guardians of Light and bars appeared trapping them and preventing them from going towards Naruto. AN3:
"What is with this sand? Its so solid." Mickey said as the keyblade wielders could not break through the sand even with their Keyblades.
"Don't interfere." Naruto warned them as he turned around. He grunted as a loud thunk could be heard as the girl's keyblade made contact with his back.
"What are you doing?! She is attacking you!" Ven asked as he watched the girl continue to keep swinging and slashing at Naruto who did nothing but grunt as each blow continued to hit the blonde without any form of fight back.
"Look at her go! I mean the blonde is not even trying to fight back!" Xigbar whispered as both sides watched the girl to wail at Naruto who did not buckle or dodge.
He just stood there as the girl continued a series of slashes and hits seemingly getting frustrated when Naruto just stood there and took it.
The girl finally used all her strength in a two-handed strike hitting Naruto in the stomach. Naruto finally dropped to a knee as the girl huffed.
"Why? Why won't you fight back?" The girl asked as she almost appeared to glare at Naruto despite her hood being on. Naruto just looked up at her with a teary smile.
"Because I wont ever hurt you or Kairi." Naruto revealed as he turned his head to his sister who looked on the brink of tears.
"You don't even know me!" The hooded girl shouted in frustration as she stomped her foot.
Naruto let out a pained grunt before he smiled at her widely.
"You might not remember and everyone else might have forgotten but I know who you really are…. Xion…" Naruto said warmly as everyone on the darkness side looked flabbergasted. Saix eyes widened.
'How does he know that? Only I had access to Vexen data and I put it a secure location!' Saix thought.
'Xion' looked around widely as she put her hands over her head.
"Aah! I don't… You don't… Xion?!" Xion screamed as she shook as if that simply name caused her great pain.
"Xion?" Kairi asked as she looked at Riku who shook his head, Aqua and Ventus looked equally confused while Mickey blinked. Donald and Goofy had utterly confused expressions.
Sora whispered "Xion?" as an imagine of a black-haired girl appeared in his mind and he felt Roxas inside of him ache with remembrance.
"Xion…. Xion!" Lea shouted as memories of Xion and Roxas flowed through him. Kairi looked at Lea in surprise but he was only focused on Xion who looked at the brink of a mental breakdown.
"I…. must defeat you!" Xion insisted as her confused memories were pushed aside to fulfill the orders given to her by Xenmas. Xion took her Kingdom Key replicain both hands and held them over Naruto's head intending to slash into hi,
"Xion! Don't!" Lea pleaded even as he was kept inside the sand cage.
"Naruto! Please! Get out of the way!" Kairi screamed with all her might at her brother who just stood there even as the Keyblade approached his head.
Faster then anyone would have imagined Naruto stood up and quickly grabbed Xion in a tight warm embrace even as the Keyblade sunk into his shoulder from the force of the swing.
"Its okay. You can stop now." Naruto told Xion even as he winced from the blade in his shoulder.
"Let go! I have to do this!" Xion screamed as she struggled to get away from Naruto who embraced her.
"Xion. I love you just as I love Kairi. You are both my sisters." Naruto told her as Xion stopped struggling as her hood fell down revealing her black hair that resembled Kairi's and the same blue eyes.
"I… loved?" Xion whispered as she stared at Naruto warm blue eyes as her Keyblade disappeared and vanished as Naruto continued to hold onto her.
"Xion." Sora said in Roxas voice much to Lea's and Riku's voice. He looked into Xion direction as his eyes brightened and turned white.
"Sora?!" Donald and Goofy shouted in worry as something bright shot out of Sora chest and flew towards Xion and entered her body instantly. The glow disappeared as Riku helped Sora up as he blinked.
"I… remember… Axel… Roxas… Sora…" Xion gasped as she looked at Lea and then Sora as she took several breaths.
"Tch. That useless puppet. Her heart was inside Sora's? Now she is no use to anyone." 'Riku' said in disappointment as Saix had a brief smile that nobody saw.
"Xion." Lea said in happiness before he looked at Sora and saw Roxas smiling for a moment.
"Wait… I did this to you." Xion said in guilt and horror as she just realized Naruto was still holding onto her even as the bruises and blood from the many strikes, she did against Naruto remained. AN4:
"Oh this? Its nothing. My sister is herself again so a little pain is nothing for me." Naruto said cheerfully as he looked into the same blue eyes that he saw in Kairi.
Xion blushed as if she just realized she was being held so tightly by Naruto but just stood there basking in his warmth.
'It feels so different from Roxas and Axel… But it feels so right…' Xion thought in embarrassment.
"But… I am not Kairi… I am not even her Nobody… I am just a…" Xion said miserably looking down till she felt Naruto warm hand grab her chin carefully before lifting it up so they could stare into each other's eyes.
"You are Xion Uzumaki. You are just as much my sister as Kairi and Namine. Nothing will ever change that fact. Don't ever forget that." Naruto insisted as he put his chin on her hair so her face was buried into his neck similar to the hug he gave Kairi.
Saix smiled a very small smile as the majority of the Darkness scoffed at the touching scene. Luxord looked rather amused then mocking while Terra-Nort looked the most disgusted.
Xion just relaxed into the hug for a few minutes before Naruto gently pulled away but kept his hands on her shoulders.
"I will get everyone back and we celebrate together as a family afterwards." Naruto whispered to her as he glanced at Terra-Nort, Sora and Kairi briefly for the quickest moments. Xion just blinked before a smile appeared as she could feel the affection of the hug even as eh released her shoulders.
'There is still Terra, Roxas and Namine I need to revive before Kairi can truly feel happy.' Naruto thought.
Naruto waved his hand as the sand cage disappeared and the Guardians were quick to run towards Naruto and Xion who met them halfway.
Sora looked confused and yet he also seemed to want to hug Xion as a result of Roxas heart resonating inside of him. Lea quickly pulled Xion into a hug which she happily returned. Riku blinked several times before shaking his head.
Kairi rushed in to stand in front of sheepish looking Naruto. She put her hands on her hips and frowned at him.
'Wow she does look like mom.' Naruto thought with humour as an imagine of Kushina with her violet eyes and longer red hair appeared but the same annoyed expression.
"Hey. Let us heal you at the very least." Aqua suggested as everyone blinked before they realized Naruto had taken a considerable amount of damage to try to wake up Xion without hurting her.
Kairi was about to cast a healing spell before Naruto raised a hand.
"You mean THESE wounds?" Naruto asked as he gestured to his shoulder. Much to everyone surprise his wounds started to hiss and steam appeared to come from the wounds. In a matter of moments his bleeding stopped, then it turned into red skin, then pink and then new skin appeared and layered itself till his wounds were completely gone before a bit of torn clothing.
'What amazing regeneration skill without any form of magic or effort it appears!' Master Xehanort thought impressed.
"I have always healed quickly even as a kid." Naruto said rather cheeky smile as Kairi pouted for making her worried but smiled when he was okay.
Kairi then went up to Naruto biting her lip in anticipation.
"Did you mean it when you said Kairi and Namine are also your sisters?" Kairi asked nervously.
Naruto smiled when he saw a blonde haired-girl the same height as Kairi with a white dress that reached her lower thighs and cute blue sandals take Kairi place for a moment. Namine looked rather pleadingly at Naruto.
Naruto scooped Kairi into a hug and whispered "Of course I did. To me I have 3 adorable and beautiful sisters that I will always take care of. Some people are lucky to have one sister but I have 3 now and I am so grateful."
Kairi felt her and Namine face turn red even hidden in Naruto's shoulder at being called beautiful as she resisted the urge to flick her hair for some reason.
After a minute he released her but luckily Kairi face had returned to normal as he stared at Sora for a moment.
'Now I need to retrieve a vessel for Roxas. I think Radiant Garden had one almost prepared for him.' Naruto mused.
AN2: Yes I well aware in KH3 Sora has much more powerful Keyblades (really just Kingdom Key with a different Keychain) but it his true form of his keyblade so that is what he naturally summons.
AN3: Naruto needs to confront Xion by himself so he can awaken her memories. That is why he brought out Xion by herself with him to her face to face.
AN4: Naruto is in his base form and he did not dodge or even block the attacks. He just continued to let her hit him till she got tired.