Prologue
Ira sat on the edge of the river, her feet lingering just above the flowing water, head faced upwards as she looked at the clouds pass by. The sun was shining brightly, casting a warm golden glow all over the lands. The meadows were filled with trees, most of which she had grown herself to keep her company on slow days like these. A sigh left her lips as she let herself fall backwards on the green grass.
"Tired already?" An amused voice called from behind her and she turned to look up at her father. "Oto-sama, what brings you here?" She asked softly playing with a few strands of grass.
"Just saw you being moody in the middle of the day and decided I could use some entertainment" he chuckled and Ira rolled her eyes.
"I really miss them, they should've been here with us. Not reincarnating over and over and fighting always" she said unexpectedly, watching as the wind blew the clouds away faster. There was a sadness in her voice that even a thousand of years couldn't erase.
Hagoromo looked at his only daughter with equally sad eyes. "I know, but I believe as long as it's just them they wouldn't find peace, it was always the three of you. After you died, Indra withdrew from everything, even Asura couldn't ever be the same"
"I can't join them" her voice was pleading as she looked up at the sage, "I can't bear to see them fight and kill again"
"I know, my daughter, I know, I myself realise my many faults. I should've been there for all of you in more ways than a mentor, but I cannot rewind time and right my wrongs. But you can meet their current hosts, you can stop that hatred from brewing again" he said resting a gentle hand on her head.
This wasn't the first time they had this conversation, but Ira had declined everytime, her own fear of not being able to see everything fall apart again stopping her each time.
"And they are not your only siblings, you'll have nine others too keep you company"
Ira snorted remembering Shukaku's crazy outbursts whenever his brothers and sisters teased him. Son Goku's pride and how he looked at humans from above his nose even as a little kid. Kurama's fluffy tails and big doe eyes that cried the most when father passed away. She missed them alright.
"I wouldn't fit in, Ninshu doesn't exist anymore, it's a forgotten concept. I was never good at Indra Ni-sama's jutsus." and remembering him was always the hardest. The last thing she had seen was his face turning from a sadistic smile to horror when she'd jumped in front of his sword meant to kill Asura before the light in her eyes faded.
"Indra loved you and Asura both, he was corrupted by some evil chakra, I could feel it. I still feel it even if I'm not in the world of living anymore. Even with his losing his conscious, he named his strongest jutsu after your name"
Amaterasu.
"Saiken doesn't like my name, she thinks it's too long, Ira is easier to learn" it was a clear change of topics. She didn't want to talk about the past tragedies anymore. Hagoromo got the message and didn't push any further.
Ira did not have the Eternal Mangekyou Sharingan, she had to constantly heal her visual cells after use to prevent her eyesight from detoriating in the slightest. Once her daily traing was done, she sat down to meditate, letting her chakra pass through the narrowest chakra coils of her eyes and undo the damage caused by overusing them.
Her favourite jutsu, and one of the only ones she used her dojutsu for, Amaterasu, had been used so regularly that it barely effected her eyes now. She didn't know if she loved it because it never left anything behind, burning away until even the ashes had disappeared, or because it was named after her own name, by her kindest elder brother.
Shaking her thoughts away, she decided to observe the customs and practices of the time that was centuries ahead of her own. If she was planning to go, she might as learn whatever she could.
Amaterasu Otsusuki, named after the goddess of the sun, might have died when she was just twenty two years old, but she wasn't about to let a few centuries of time spent lazing in the pure lands, slow down her drive to get her brother where they belonged.
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Three months later, Konohagakure, eleven years after the Kyuubi attack
Hatake Kakashi was done with his life, seriously, he did not want to waste his time training a bunch of bratty genins. This year's lot was just as bad as the last. He wouldn't let a team without basic teamwork go out in the field and get themselves killed. No matter earning the reputation as the worst jonin sensei to be assigned too.
Even Gai had passes a team this year, a taijutsu specialist, a branch family Hyuuga prodigy, and a weapons enthusiast. He could feel his luck slipping and the day he had his own team seemed nearer than ever.
On top of his worries about getting roped into forcing to pass a genin team, he also had an urgent summon to the Hokage's office at ass o' clock in the night. So yes, he was mad at the world in general.
It had been years since he recieved an urgent summon through his anbu seal. Only this fact had him hurrying to the Hokage tower as soon as he could, dressed in full anbu gear (and the fact that his seal kept flaring brighter the more time passed). So jumping through the window in the Hokage's office was entirely justified, it was the fastest way to reach of course.
What he didn't expect was someone to literally punch him in the stomach that sent him falling to the ground with quite a lot of force (And a lot of embarrassment, but to his defence, he was sleepy and irritated).
"Ira-san, please calm down, he is not a threat" he heard the Sandaime say to a lady who was looking at him from the window with her Sharingan activated.
Sharingan...?
An Uchiha survivor?
He could see the urgency of the mission, because the Sharingan was a valuable asset to Konoha, and with only a few left it would be guarded closely.
"This man has a Sharingan that is not his own!" The woman spoke and Kakashi felt his heart beat faster, someone who could not only recognise the presence of the dojustsu but also it's origins? He had never heard of even the clan head, Uchiha Fugaku, being able to do that.
"Please stand down hime, his eye wasn't stolen" Jiraiya's voice was heard next. Why was Jiraiya in the village? He hadn't returned since the attack eleven years ago.
This time fully alert, he made his way through the window again. Landing in the office he saw that the Hokage looked ten years older, and Jiraiya seemed like a kid who got a new toy. The lady, Ira-san as he recalled? Looked at him like he was the enemy.
Her Sharingan wasn't on though, and he could see the black eyes the Uchiha had. Her hair was a light brown-blonde colour, a half blooded Uchiha then? That would explain that she wasn't seen in the village before.
"Kakashi, whatever you're hearing in this room is SS rank information, only Jiraiya, me, Ira-san and you will have access and authority to speak of it, understood?"
The message was clear, the elders weren't to know about it.
The Hokage sighed and sat down in his chair, pointing to the woman in the room, he said, "Meet Otsusuki Amaterasu, now known as Otsusuki Ira."
And he could already feel a new headache creeping in.