The Accursed Brothers
This story starts off in a village somewhere off the borders of the Land of Fire; this village is known as the village hidden in the stars. The village is known for its fearless warriors and cunning leadership but it's more known for its curse.
A long time ago this village was visited by the Sage of the Six Paths himself. He had heard of the village's deadly warriors and remarkable leadership and wanted to see if he could trust these people to help him contain a certain problem he had among him before he passed away.
The Sage soon later found the leader of the village and asked him could he harbor a certain demon known as the Ookami no Naraku (Wolf of Hell) away from the world so it wasn't miss-used. The old man agreed to the Sages terms and helped him seal away the beast under the compound away from the world itself.
The old man soon later asked what he would do if the beast would escape. How would he be able to stop him?
The sage smiled and raised his hand and placed it upon the old man's forehead and focused his energy into the man's head. The man felt his head rush with power and soon it receded away and he opened his eyes and met the sages eyes with his own and asked what happened but the sage simply said that he gave him his kekkei genkai to be able to stop the beast if it ever decided to break free.
Before the sage left for the last time he shown the man how to work his kekkei genkai and how to properly seal the demon away and to separate it and place it into different things but it was to only be used as a last resort for he told the man it would cost him his life calling on the shinigami to do so.
The sage then told the man that every first born male of every third generation would get his eyes known as the rinnegan and that the said boy would have a duty to learn of his power and control it and keep the demon at bay as its jailer.
The old men agreed and watched the sage get up and leave without a word but stopped to give a small glance back to the old man before he spoke his final words.
"The Ookami no Naraku is a cursed demon that isn't to be taken lightly and whoever possess it within will be cursed to the end of their lives, so you have been warned old man" and with that the sage left the man and his village never to be seen again by them or anyone else by that matter.
The old man smiled as he was just granted the power of a true God and watched his village prosper until the day he passed away but as his promise to the Sage he kept to his words and passed down the knowledge of sealing's of the demon and the power of the eyes to his village hoping they would honor the privilege of the power and continue with the said agreement between the old man and the sage.
Little did they know the world was very corrupt…