In the Shinobi World are many Clans, but one of particular Repute, especially in the Land of Water, is or at least was The Kaguya Clan, a Clan descended directly not from the Sage of The Six Paths, Hagoromo Otsutsuki or his younger Brother Hamura Otsutsuki, but their Mother. It is thought that Kimimaro is the Last of the Clan, but it is not so, there is another Survivor, his half-brother.
Once upon a time, Kimimaro's father had a one night stand with a member of the practically extinct Uzumaki Clan, the boy, Kai Kaguya, would have inherited his brother's illness were it not the Uzumaki's inherent bodily strength, longevity, and healing factor. But Orochimaru could not acquire the boy, because he was taken in by the Hidden Mist. The Then-Bloody Mist trained him as a weapon from birth, honing his strength and Power, and with it, was ready to put him into the Seven Ninja Swordsman of the Mist...before more than half their number were either killed off or went and fucked off, Kai's Mentor among them. Kai has been tracking the swords down, however the Samehada is too protected, the Kiba are fuck knows where, and until recently, the Kubikiribōchō.
(Land Of Waves)
Kai, was watching some runt of an old man kick a corpse, he might not be a fan of The Demon, but there was a limit to how much violating of sanctity he could take. Throwing a small army of Senbon, Kai watched as the Old runt stepped back.
"That sword! Don't tell me!?" Says Zabuza in shock.
"Been awhile Master, Lady Mizukage sends her regards." Says Kai, before hurling the Nuibari into Zabuza's chest. "Kakashi Hatake right?" Kai asks, looking at the Leaf Jonnin.
"Yes?" Asks Kakashi, somewhat hesitantly, as Kai looks at the group, assessing each Leaf Shinobi.
"Call me Kai, I'm from the Uzumaki and Kaguya Clan's." Says Kai.
"HEY! I'm an Uzumaki too! Guess that makes us cousins!" Says a Blonde idiot who seems happy for some reason.
"No, it doesn't, you could have the blood but you lack our physical traits, Unlike me, your Hair is yellow, not red like mine, with no such sign, you have no claim to our Clan. I am a Half-Uzumaki, and I have such a trait, you who allegedly carries the name, does not.
"Why are you here? Why Now?" Asks Zabuza. "I am here to take back what you denied me Master, I'm here to retrieve the Mist's Property. As you can see, I've retrieved the Nuibari, The Kubikiribōchō, Kiba, and Samehada are the only blades not yet retrieved. Gato right?" Says Kai, turning to face the runt.
"Yeah, what's it to you?" Asks the man condescendingly.
"Zabuza might be a traitor, but he was a member of the Seven Ninja Swordsman, and as a Member myself, I cannot permit those who betray a member to live. Therefore, you and every man here behind you are dead men walking." Says Kai, picking up the Executioners Blade in one hand before pulling out the Nuibari. "Hatake, stay out of this." Says Kai, before turning towards Gato, and rushing forwards.
Kai cuts Gato down the middle, before he begins to bloody his blades. With one hand on Kubikiribōchō, he Butchers his way, but with his other hand on the Nuibari he quickly and literally strings the idiots along.
"Should we help him?" Sakura asks, hoping Kakashi says no.
"Are you insane!? Fighting me is one thing, but you never want to get in his way!" Says Zabuza, his strength Failing.
"He called you Master, was he your student?" Kakashi asks.
"Yeah, Kai was one of two survivors of the Kaguya Clan, his Half-Brother went on to serve Orochimaru, but unlike him, Kai was not stricken with his brother's Genetic illness. His abilities are far more powerful. He could take on every one of our members, enough that Mangetsu himself took him as his apprentice. As a result, he went on to master all Seven Swords, but my Executioners Blade was his preferred weapon. Kai's Mother was actually descended from the Hozuki Clan, Mangetsu's Clan, as a result he taught him more than Swordplay." Says Zabuza, now on his back.
Turning his head to face the massacre in progress, the five find the bloody business over. "Master, I wish it didn't have to be like this, but I've no choice. As the Seven Ninja Swordsmen's leader, I have no Choice but to sentence you to die for treason." Says Kai, a sad smile on his lips, a single tear being shed.
"Tell me, how many swords, were left after Mangetsu died...give me that at least." Says Zabuza. "Just Hiramekarei, my apprentice holds it currently, he and I while still Genin, are the only Seven Swordsman left to remain loyal. I'll make sure you and the boy get a proper burial, Master." Says Kai, as Zabuza nods in grim acceptance and Kai buries Nuibari in Zabuza's throat.
Kai sets to work, quickly Sealing Zabuza and Haku into Body Scrolls turning back to Kakashi. "I have no quarrel with you, I could probably take you, but there'd be no Honor in it. Make no mistake, The Mist will get the Sharingan one Day, of course, considering my biggest target, is in the Hands of a certain Clan-Killer's partner, it's inevitable. Sorry in advance boy." Says Kai, the last thirteen words directed at Sasuke Uchiha.
"You know where he is?" Sasuke asks Dangerously.
"No, But I will locate him, I suppose I can give his corpse at least, just without the Eyes." Says Kai, as he pockets the Scrolls and begins to leave.
"Hold it! Who are you?" Asks the Girl.
"I Gave my name and Clan's what more do you want?" Asks Kai, in clear annoyance.
"You come from the Mist, but your no older than us!" Says Sakura. "In truth? I am older than you, by at least two maybe three years. Oh blondie? Say hello to the angry fur ball for me when you can? My Turtle sends his regards." Says Kai.
"You have one two? Don't you?" Asks Kakashi.
"Yeah, the former Lord Fourth Mizukage's death changed things, So I got the damn thing, my Chakra pathways were...stalled a few years after my birth, so I don't suffer any problems that would have befallen me as they did the previous Oxopussy. See you seen old man, tell the Third Hokage that the Hidden Mist Accepts the offer, and I'll be there too!" Says Kai, before departing.
(Kirigakure)
Kai, knelt before the Lady Mizukage. "You encountered the Nine-Tails Jinchuriki? Kakashi of the Sharingan? And The Last Uchiha in the Leaf?" Asks Mei, Impressed.
"Yes, my lady, but...the boy, Nine-Tails, he's clearly The of The Fourth Hokage's blood, Hair was a dead giveaway if Ao's reports are anything to go by. When I mentioned Itachi, the Uchiha, well he'd do better here during the Bloody Mist nonsense." Says Kai.
"That's unfortunate, at least you Recovered the Kubikiribōchō, as well as the Corpses of Zabuza and this Haku. I trust you handed our message?" Asks Mei, motioning for Ao to leave.
"I did, but I must request Ao remain here, his situation would not be well received in the Leaf, given Danzo still runs behind the scene." Says Kai, as Mei locks the door and slips from her dress.
"Agreed, know I believe I promised you a reward for every Sword you retrieved?" Says Mei, having given herself to his pleasure for the Nuibari, Kabutowari, Shibuki, and even the Hiramekarei, though that last one was for finding a new wielder. "You did my lady, I'm yours." Says Kai dropping his Pants.
Kai left Mei's office, coming out his shirt open, several scratches visible, as he did his pants up, and began buttoning his shirt. It was hardly a secret that he was sleeping with her. He respected her authority, so long as she respected his in bed, Mei was very submissive in between the sheets. After their frequent couplings she groomed him more and more for the Mizukage's chair. She probably wanted a Mizukage still around to bone her in her prime. Probably.
Kai headed towards the Seven Ninja Swordsman's Barracks, where Chōjūrō, was often awaiting him after each report. The two of them were Genin on the books, when they were easily Jonnin, but they wanted a big show for their promotions. Call them vain. Kai arrived to find Masako there, Chōjūrō's own apprentice, who was stood beside Chōjūrō. "Okay, you two, time to start training, the Chunin Exams are coming soon, and I've already done my S-Rank, as you two have. Masako, you can start the training with Shibuki at once. Chōjūrō, you and I will start to practice against Clones, Our Clones will attack from every angle at every time or place, we must be ready. I have an hour before I have to begin my research and surgery." Says Kai, as Chojuro and Masako nod before doing as instructed
His training finished, Kai began his study of Haku, the boy had the Ice-Style, something he Mist couldn't afford to Lose since like the Sharingan, it was already on the brink of Extinction. Kai had been cultivating the genes of various Shinobi, for instance he transplanted the cells of a Lightning-Style User in order to improve his proficiency with said Chakra Nature, and say hello to a powerful Lightning-Style user. Kai was primarily a Wind, Fire, and Earth User, which enabled him to use Magnet, Scorch, and Lava-Style, but with added gene tinkering, he acquired the ability to utilise the other forms of Lava-Style normally unavailable to Kiri. Mei herself had Acidic Mud, but with his tinkering Kai had acquired the Vulcanised Rubber generally exclusive to Kumo, as well as the traditional Iwa found Corrosive Quicklime and Volcanic Ash.
Naturally Kai had Water-Style, but His Training was limited since he prided himself on training himself in it to a level of perfection before adding new cells to break the balance in the element. Haku's Cells would enable him to acquire the Ice-Style, and with any luck, transfer them to fellow Shinobi. Eventually the Kekkei Genkai would be revitalised. It was hardly his first operation, and unlikely to be his last, but he wouldn't submit others to that which he was unwilling to do so himself, so he began the operation.
Immediately after his operation, Mei called upon Him, Masako, and Chōjūrō. "Now then, I've come to the decision to have you three serve as our Representatives in the upcoming Chunin Exams held in the Hidden Leaf, the Sand, Grass, and Sound will also be participating, so be careful. I don't need to tell you three how important this is in order to rebuild our reputation." Says Mei.
"Of course not Lady Mei, I've tried and so far succeeded in removing in barbarism from their souls, you can count on us." Says Kai.
"Thank you Kai, that's a big relief to hear, now then I will be attending the Finals with the Lord Kazekage and Hokage's, so please try and make it to the finals without embarrassing yourselves and me." Says Mei.
"Yes, Lady Mizukage." Kai, Chōjūrō, and Masako say in unison, heads bowed, though Kai keeps his eyes raised, smirking as he eyes Mei's bust. A Small smile plays on her lips at that.
"Ao will be acting Mizukage while we're away, now then let us go to the Hidden Leaf." Says Mei as she stands up and leaves the room.
"Ao, keep an eye out for any more of our blades?" Kai asks his guardian.
"Don't you worry about that, just protect and don't embarrass Lady Terumī." Says Ao.
"On that note, we should be getting away." Says Kai as he leaves himself, Chōjūrō and Masako following close behind him.
(Hidden Leaf Village Outskirts, Land of Fire)
Mei, Masako, Kai, and Chōjūrō were in the Land of Fire, Specifically the Outskirts of the Hidden Leaf Village. They'd been intercepted by some ANBU led by a Yamanaka who agreed to take them to the Hidden Leaf. "If you don't mind me asking, could you arrange a meeting with Kakashi Hatake?" Kai asks the man.
"Why?" Asks the Yamanaka Suspiciously.
"Itachi Uchiha's partner has something that belongs to us, he absconded with it when he betrayed us. Since Itachi's brother is a Genin under Kakashi, it's logical to assume their paths will cross, I merely wish to be informed of when and where such encounters take place." Says Kai.
"I see, that's not an unreasonable request." Says the Yamanaka thoughtfully.
"I know, that's why I asked." Says Kai as they finally arrive at the Hidden Leaf Village...
While Lady Mei left with Masako and Chōjūrō, Kai took to walking around the village, imagine his interest and surprise when he detected Demented Number One and Accursed Number Nine in close proximity. Kai found his way to the two.
"Hmm, well well, long time no see huh? Time for Kazekage Clan to fuck off, that means you red." Says Kai turning to face Gaara briefly.
"How did you know I was there?" Gaara asks, causing Kai to smirk.
"You, me, blondie? We've got one of the nine in us each, you get the Demented Number one, he's got the Accursed Number Nine, and me? I've got None Ya fucking Business Number Three." Says Kai.
"I see, that explains it then." Says Gaara.
"Hey girl? Let' hope your more than bust a pretty face." Says Kai to Temari, causing her to blush a bit. "Sorry about that, Jinchuriki for the Shukaku are notoriously ill-tempered, makes you grateful when your own is no mental case like Shukaku or the Nine-Tailed Fox. Name's Kai Kaguya, I'm a representative for the Hidden Mist, my team and I will be participating in the Exams, just so you know, Team Kakashi is the only one who has a chance against us." Says Kai, as he departs. "Things just became more than interesting." Kai remarks happily.
Kai had settled in and was busy reading when someone knocked on his door. Picking up the Nuibari in the corner, he held it at the ready, but he didn't expect who was at his door to say the least...