A Skyward Sword and Naruto Oneshot
As told in legend, the Golden Goddesses left the Triforce in Hylia's care when they departed from the world. However, the Demon King Demise and his forces rushed from the earth to take the Triforce, attacking the people of The Surface. Hylia gathered the surviving humans on a piece of land and sent it to the heavens, beyond the clouds.
With the humans gone, she united the Ancient Robots, the Gorons, the Kikwis, the Mogmas and the Parella to battle Demise's forces, sealing away the demon king within the Sealed Grounds. However, knowing that Demise's followers would free him, Hylia had the Goddess Sword created, discarding her divinity to be reborn upon the residents of Skyloft. In her final moments, Hylia entrusted the Sheikah the task of protecting her future incarnations.
But not all in the Sheikah tribe sought to follow the trusted ruling of Her Grace. Only one sought to spread out to travel the realms, and thus left his post, and his tribe. In another continent away from the lands of what one day will become known as Hyrule, this lone Sheikah became a hermit sage. He, with his immense powers, his magical energies, found a group of small humans that survived the wrath of the Demon King's rampage from the other land. He also fought against another demonic creature just as terrifying as Demon King Demise, and shattered it into nine separate entities, sealing the main body and its soul into himself.
He taught the surviving humans of this continent his knowledge, and one day died leaving his legacy to two sons conceived for him. The two sons soon became the Uchiha and Senju Clans, and then the humans on this continent grew, the Rikudō's knowledge slowly becoming perverted as time had passed, and the nine beasts of power perverted into weapons of mass destruction. In a world where the Demon King Demise remained sealed for centuries upon centuries, the land now collectively known as the Elemental Nations grew in the power that is now used as tools of war and bloodshed for a professional lifestyle called Ninja.
Then one day, the seals that imprisoned Demise at the Sealed Grounds began to deteriorate. It was at this exact moment in time, that the Kyuubi no Yoko was sealed into the body of a human infant, the adults using their son as a catalyst to imprison the rampaging fox once again dying for their efforts in saving the village. But here, the moment where time and space itself parts ways into different timelines.
For this timeline, the Dark Lord Ghirahim took immense interest in the humans of this land far away from where his master remains prisoner by the remaining Sheikah Tribes.
"This will be very interesting... such humans with great power, to imprison a monster of pure power into one of their own kin." He licks his lips, keeping hidden as he watches the aftermath. An old human male arrived, as the giant toad monster disappeared abruptly in a plume of smoke, and the old human picks up the crying human infant. The old man may not see it, but Ghirahim did.
Ghirahim can see an aura of energy, literally flowing off the infant, like a roaring flame hungry for destruction. "I must take that human child. Such a power will be beneficial in my goals of freeing my Demon King..."
With a grin, he vanishes in a blaze of patterned gold diamonds.