Seven's Heaven
There was a bizarre, yet frequent, sight for those who lived in Takigakure. A girl who looked no older than 16 was soaring high above the village on what seemed to be a pair of wings made from chakra. Had anyone from Hoshigakure seen her, there would have been an attempt to either capture her to find out how she learnt something so similar to their prized techniques, or kill her to prevent those secrets escaping. Such a thing had happened before, when the girl had been less careful. Fortunately for her, the jounin had no idea of just who he was facing, and thus was unprepared for when his would be victim lost control and unleashed 4 tails of demonic chakra. For the flying ability of the girl called Fū was not given by exposure to a rock that fell from the stars, but from the imprisonment and chakra of the Shichibi no Kabutomushi, the seven tailed horned beetle.
The elders of Takigakure didn't seal the Shichibi because it was attacking their home. Nor was it sealed to provide the village with a secret weapon. The Shichibi was sealed to provide it with a sanctuary of sorts, in which it would be protected from those that hunted it. In return, it would help its host in any possible way, aiding the girl in her times of need willingly, and occasionally with excessive violence. The Shichibi didn't say what had scared it, but the elders had assumed it was just being paranoid. Of course, since the Shichibi is the third most powerful of the Biju and therefore not easily scared, the council should've known better. After all, it's not paranoia if someone's really out to get you.
Fū was an odd child. Born with green hair, and pupil less orange eyes, her appearance was bizarre even amongst shinobi, especially those without a Kekkai Genkai. She had spent most of her childhood in a large house wither every need catered for, despite the fact she had no parents. She seemed most comfortable when surrounded by insects, and they seemed content around her. She spent most of her time dreaming of ways to fly, until she achieved that dream by tapping into the Shichibi's chakra. That happened on the day of her chuunin field promotion, when she was ambushed by a genin cell complete with jounin sensei. She killed the genin, and fatally wounded the jounin, who lived just long enough to reveal they'd been sent to capture and convert the Jinchuuriki. She hadn't known until then the reasons for her village's kindness. In her confusion, the Shichibi took the opportunity to aid its host, and gave her access to its chakra. The wings were good to use as weapons as well apparently, as they sliced clean through the jounin protective gear and defensive jutsu with ease.
High amongst the clouds, Fū remembered how she'd been treated and was grateful. The stories of Sabaku no Gaara had spread far and wide, and she shuddered when she realized that her village could have easily treated her the same way Sunagakure had treated him. Jinchuuriki did not have the most pleasant of reputations, a throwback to the time of the Niidaime Kazekage. Barely more than shells for demons to inhabit, they'd destroyed many before the demon's chakra consumed them. She smiled. Compared to those times, she was in heaven.
As she swooped down one of the waterfalls that gave her village its name, the spray of water caught the sunlight, causing a rainbow to appear to the villagers. Most of the civilians pointed to the sky and laughed, content that their guardian angel was watching over them and protecting them from the world's dangers.
Not brilliant, but interesting. If a Biju knew people were hunting it, and they can speak, why not make an alliance with some like the creatures that are hunting it. Offer to be sealed for a brief time, and help the humans defend themselves, and by proxy the Biju. Since the Shichibi is the only Biju that can fly, and as more tails appear on a Jinchuuriki the more they resemble the Biju, surely Fū can fly as well. At least, that's what I thought. Two to go, the most fun to do as well. They may take some time to do though.
Update to timeline:
Fū; About the time of Yugito's capture (I figure she was the last or second last captured before they attempted Kirabi since she's got a very powerful Biju. As for them attempting to capture Naruto early, he was young, inexperienced and could barely release the Kyuubi, so was an easy target with the minor exception of who his sensei was.)
If you hadn't noticed, I'm trying to get each one to have different treatment as a child, since all we know for sure is Gaara having assassination attempts, and Naruto being ignored by his peers thanks to their parents. I could have them all go the Gaara route, but that would be boring.
The rhyme I use is rather obscure, and quite old. Dearth, if you don't know, means lack. It goes to nine so I thought I'd try to make it fit.
Despite all claims to the contrary, I still don't own Naruto, and most likely never will. Never say never though.