4 YEARS AGO...
It was a relentless night in the hidden leaf, as the demon called Kuybi attacked the village. "We've driven him out of the village! Now keep at him, one after another!" Ordered the Third Hokage. No more then a few seconds after he'd given the order, a massive gust of wind was released as waves and waves of ANBU black ops ninja charged towards the Kuybi screaming "CHARGE!".
Whilst in mid-air, the ninja black-ops and Leaf Jounin as well as a sizable Chunin threw dozens of kunais tagged with explosives which detonated on the Kuybi's giant and towering face- which rivaled that of the stone faces of the previous Hokage which were carved into the mountain side behind the Hokage tower. The Kuybi roared in annoyance, it opened its' mouth and a massive ball of chakra that built up into a tailed beast bomb.
The third Hokage took a step back and shouted in question "It's going to do that again!?". Just when all hope was lost, there was a torrent in the skies that gave way to an incoming object. A giant toad by the looks of it, but this was no ordinary Toad...this was none other than Gamabunta and on the top of his head was a very furious Minato Namikaze, aka the Fourth Hokage. Gamabunta slammed down on the Kuybi with his hand on the Kuybi's head as he shouted "Not so fast, you moron!"
The attack stopped the build up of the tailed beast bomb, but made the Kuybi VERY angry as he stares up towards the insignificant Toad, despite his efforts to get up- Gamabunta held him down. The Third Hokage landed near the beast and called out to the Fourth Hokage "Minato?!"
Thinking that he didn't hear it, Gamabunta shouts "Lord Fourth!". "I know..." Responds Minato as he lands on the Kuybi's head whilst performing hand seals. Once done, there was a bright yellow flash and both the Fourth and Kuybi were teleported far away from the village.
After a while the Third looks up north and sees a yellow explosion, and he can only assume that that was Minato's doing. "THERE!" He shouts as he runs along with the ANBU and the Jounin, leaving the Chunin behind to safe guard the Village in their absence.
Meanwhile with Minato...
The fourth Hokage teleported himself towards an empty field with Kushina and his newborn son Naruto in his hands as he had some time to grab them. After saying some things to his red headed beauty of a wife, Minato turns to face the beast, but then as he clasps his hand together to make a Jutsu seal- Kushina stops him and says "Wait! I...I can still do it".
Kushina holds Naruto tightly in her arms and turns, making her back face the Kuybi, then, chains with gold light shot out and dug under the ground before emerging near the demon and entrapping him in it. The Kuybi falls to the ground and Kushina coughs, she was getting weaker by the nano-second. Minato checks up on her, she huffs again and again as she says "I'll take the nine-tails with me...to my death"
But Minato had other plans, he erected a barrier and summoned an altar 'I have work to do' he says to himself. To much of Kuybi's and Kushina's confusion they both think to themselves as to what Minato might be doing.
"I'm going to seal half of the Kuybi's chakra inside Naruto using the eight signed sealing" Minato clarifies. This terrifies both the Kuybi and Kushina.
A while later, the Third Hokage and the ANBU as well the Jounin show up in time to see the Kuybi vanish into something. When Lord Third sees Kushina, he can only assume that something was Naruto.
Then, much to everyone's surprise. A moderate amount of the Kuybi's chakra goes astray and somehow manages to merge with the nature chakra surrounding the field, a bright light then shines down on everyone and then...suddenly.
Both Lords heard what seemed like an infant crying, Minato looks towards Naruto bu he's asleep. He then looks to the ground and sees another child! This child had dark red hair and was in a way, very identical to Naruto. It opens its' eyes and Minato gasps as he sees the silted and beast-like eyes of the Nine tails, even the chakra radiating off the child belonged to the Kuybi. This was the Kuybi! but something was different, he had Naruto's chakra in him as well...somehow.
Then, a motherly instinct her over as Kushina moved towards the other child. She picked it up and then it stopped crying and started...laughing?! Kushina smiles and holds the former Kuybi closer.
Lord third finally catches up and silently orders three ANBU to go and destroy the Kuybi remnant once and for all. They move in and quietly withdraw their kunais, however, Kushina catches them in the act and using her last bit of strength she throws 6 shirukens in their path making them halt dead in their tracks. She then spoke in a calm, comical, weak and dark voice "If any of you still value your 'manhood' THEN STAY AWAY FROM MY TWO CHILDREN!"
The three ANBU, knowing what Kushina was capable of when she was helpless and enraged, stepped back and headed her warning and slowly went back to Lord third's side. Lord fourth flashed his wife a surprised look and whispered to her "Are you sure about this Kushina?"
"Couldn't be more sure than anything else" she responded with a smile, bringing the two boys closer to her and kissing their foreheads in which they responded with a smile.
"Well if you are...then I am too!" Minato said as he readied himself to fend off any ANBU that came near them. But to his surprise, none moved and then the captain spoke up.
"We could take you on easily Lord Fourth...but, It's not you we fear. We...well prefer to keep our 'manhood' rather than loose it, cause we're kinda scared of Lady Kushina"
Lord's third and fourth laughed and were joined by the Jounin as well, then thing became serious. "Lord fourth...a...are you sure about this? You know that is the Nine tailed fox right?"
"Not anymore...it has nature chakra as well as Naruto's chakra...meaning he's got my chakra running through him."
"Very well then...but, not that it's my business. But what are you going to name him?" asked the Third
"Kurama..." whispered Kushina
"What's that dear?" Minato asked as he heard her say something. She looks up to all assembled before her and proudly declares "HIS NAME!...is KURAMA UZUMAKI!".