This is a Naruto Shippuden short story I wrote a while back. It mainly involves my OC Kara Uchiha, who is Sasuke's twin sister and Naruto's lover.
There's a whole story behind it that I wrote back in 7th grade. Here is the gist of things you should know.
I had created a female demon named Reoko. She is not a tailed beast. The day Kara and Sasuke were born, Reoko was sealed into a jewel. The Reoko Jewel was given to the infant Kara the day after she was born. Her father, however, wanted nothing to do with the demon. Therefore Kakashi was ordered to raise/train the girl. Because of this, she had no idea who her brothers were until she was twelve and was assigned to the same team as Sasuke. Many people seek the tailed beasts as well as the great demon Reoko. One of them being a group of ninja known as the Reoko Retrievers.
I do not own Naruto, only my OCs and the story.