The Chinoike clan was a clan active during the Warring States Period.
They were one of the many mercenary ninja clans active in the Land of Lightning. At some point, a woman of the Chinoike clan married the Land of Lightning's daimyō. The daimyō's first wife became jealous of her, and when the daimyō died soon after their marriage the first wife blamed the woman and her clan for the daimyō's death. Many believed the first wife's lies, causing the entire Chinoike clan to be banished from the country. The Uchiha clan were hired to carry out this task, and they forced the Chinoike clan to settle in the Valley of Hell in the Land of Hot Water.
At that time the Chinoike's were just a meager two hundreds in number compared to the mighty Uchiha clan which have more than a thousand members.
Seeing the gravity of the situation the then leader of the Chinoike's clan complied and settled in the Valley of Hell in the Land of Hot water.
The Valley of Hell was thought to be uninhabitable. Ninja from the nearby Yugakure checked in on the Chinoike clan a few months after they were relocated to the valley and found them drinking what appeared to be blood; it was actually only water, turned red by minerals in the earth. Unwilling to investigate further, Yugakure declared the Valley of Hell off limits. Over the years, the valley's location was forgotten and the Chinoike clan faded from history. In truth, the Chinoike were able to survive, surviving off the valley's minimal wildlife and resources and enjoying decades of peace.
Though living peacefully, the Chinoike clan had their disagreements. Being forced to live so closely together for so long caused even minor arguments to erupt into violence; in the anime, the tipping point was whether or not the clan should seek vengeance against the Uchiha clan for exiling them there. In a single night, the clan wiped themselves out, with only En Oyashiro and his daughter, Chino, surviving. They left the valley and Oyashiro, guilty for his role in the deaths of his clansmen, decided to hide his identity from Chino, raising her to believe that she was the last of her family in the hopes that she would not repeat his mistakes.
Shortly after the deaths of the Chinoike clan, the Valley of Hell was rediscovered by Hidan. He reported this to Yugakure, who travelled there and confirmed that there was nobody still alive in the valley. They once again declared the valley off limits and officially ruled the Chinoike to be extinct
End of their History.
ABILITIES OF CHINOIKE CLAN
The Chinoike are famous for their Ketsuryūgan, a dōjutsu that, when active, makes their eyes appear blood-red. The Ketsuryūgan allows them to perform powerful genjutsu, of comparable strength to the Uchiha clan's Sharingan. They can also use the Ketsuryūgan to manipulate liquids that have high iron contents, such as blood or the water that naturally flows in the Valley of Hell. Before they can manipulate such liquids, it is necessary that they imbue it with their own chakra
======================
But before all of that could happen i offered them a place they can call home in leaf which will provide them enough resources and a future for their children thus avoiding their extinction.
Of course! There's still disdain between the Chinoike's and Uchiha clan members but i managed to make their leader see reasons thus convincing them to join Konoha.
They are a little more than 700 in numbers. Why i think that they are such a large clan? What is my logic behind this :---
1)Because they have enjoyed decades of peace within the valley since the time of their exiles(At that time they are a little more than two hundreds in numbers) thus there must have been a positive growth in their number
2)They were living in a f***ing valley even if it was Valley of Hell and were being forced to live closely together which created many conflicts which also shows that they are very large in numbers.
3) I needed it for my plot in this fanfic.
🙏🙏🙏😁
[[Note:-Hidan, during his childhood, after hearing rumours about the Valley of Hell, went there and found it out of curiosity. There, he was disgusted by the smell of sulphur, and discovered corpses all over the area. After returning and telling others of the corpses, they weren't surprised that the Chinoike Clan couldn't survive living in the valley, prompting Hidan to CORRECT their assumptions and informing them that the bodies WEREN'T SKELETONS but ACTUAL BODIES, WITH THEIR BLOOD NOT DRY. His story lead to people suspecting Hidan of murdering them, as well as Yugakure ninja being dispatched to the area to investigate, during which they determined the slaughter to be a clan act.
And since Hidan was suspected of the murder of the clan, therefore it means he must have been a shinobi at that time and it is said that he discovered the valley around childhood which is around 12-13 and Hidan wasn't that good as a shinobi except for his immortality hence him being a child prodigy is out of question therefore he must have graduated around 12-13 years of age which was the normal graduation age for shinobi which means that the massacre of Chinoike Clan occurred at the age, when Hidan was around 12-13 years of age.
The age of Hidan in Part II is 22 and Naruto is 16.
Therefore the age difference is 6 years.
Hence, the CHINOIKE Clan must have been ALIVE TILL 6-7 YEARS of NARUTO'S AGE.]]