Naruto's Sister | The 11 Tails

Part 3 - Haku

"Lil bro! It's our first time out of the Village!" Blue smiled, then winked. Naruto laughed at his sister, and then Kakashi realized, when Blue put a finger to her lips. "Oi, Blue! Have you taken Naruto out of the Village before!?" He yelled, then sighed, knowing the answer. Sasuke rolled his eyes, and Blue and Naruto fell to the floor laughing.
...
Blue and Kakashi stopped. They looked at each other and nodded, continuing to walk. Sasuke was walking ahead of the group, as if he knew where he was going, and was right in their path. Blue created a clone to tackle him to the floor as their enemies came out. Blue drew her sword, easily cutting through the chain the two used as a weapon, as Kakashi kicked one into the other and then tied them up. Naruto stood dumbfounded.
...
"Blue, you interrogate them. I'll talk to our client ." Kakashi said, to which Blue agreed. "Lil Bro, Sas, step back."
"How did you-" One of them started.
"A puddle in the middle of a road with no signs of it raining? How stupid do you think Shinobi of the Leaf Village are. Now, you can tell me who sent you and why. Or else, you'll regret it." Blue threatened.
The two laughed at her, to which she ordered Naruto and Sasuke to turn around, telling them to not look no matter what.
This was the only way she could kill people, at the time.
She had to let her true self take over.
She turned into her real form.
Kakashi sensed Blue, and sent a clone running to Sasuke and Naruto forcing them to the ground so they wouldn't see or get hurt. The real Kakashi blocked the bridgemaker's view.
However, Sasuke saw it.
That wasn't Blue.
It had 11 Tails.
Black fur.
Claws.
Fangs.
A Wolf?
But, it had Blue's dark eyes.
After the two had screamed they were sent to kill the bridgemaker, before they could finish, there was just cries of help, and then silence.
"Blue, are you okay?" Kakashi asked.
"Y-yeah." Blue stuttered, she was now back to normal. Sasuke and Naruto looked up, horrified.
There stood Blue.
Covered head to toe in blood.
Kakashi caught her as she started to sink to the ground.
"You're a -" Sasuke started, but Kakashi interrupted, "Ah. Blue has a separate personality. What you saw was an illusion caused by her. Her second personality is dangerous. But she'd never hurt a comrade, don't worry." Kakashi said, chuckling. He continued, "Blue. Clean up." Blue nodded, and disappeared in the forest. Naruto was even more horrified when she saw nothing remained of the two that had attacked them.
...
"Blue, why did your personality change?" Naruto asked.
That's right. That's what I'm supposed to say it is. Just a personality disorder.
"Whenever someone I care about is in danger, I just change." Blue said nervously, playing with her thumbs.
...
That evening, they arrived at the Wave Country and to where they were staying. Almost.
...
"Show yourself." Kakashi ordered.
It was Zabuza.
Blue froze.
...
"Show yourself." The voice ordered.
A young Blue stepped out from behind the tree, and glared at the two who had found her. "Who are you." Blue demanded, preparing to show her true self. "I'm Hoziki Mangetsu. This is Zabuza." A boy around her age smiled.
"Lord Yagura would like to speak with you."
...
That was 10 years ago. Blue was 19 now. Awhile after Blue revealed her true colors. The Third Hokage had sent her to test her power. More like, Danzo had threatened to reveal her secret if he didn't.
...
Present.
Blue charged towards him. "Zabuza! Where's Mangetsu!? Were you sent by Yagura? Why are you here!?" Blue shouted.
In a second Zabuza had her pinned to a tree. "Mangetsu? That's old news, brat. Yagura is dead! I killed all the Jounin in my village." He laughed. "Good thing I slowed you down, wouldn't want you growing tails, now would we?"
"Get off my sister!" Naruto yelled, as Zabuza started to choke Blue. It went dark after that.
...
When Blue woke up, Zabuza was pinned down by Kakashi. Kakashi was trying to force information out of him, when a needle struck Zabuza and he dropped dead.
"He is from my village. I shall take care of him." A voice said.
Haku.
...
10 years ago, before meeting Zabuza.
...
Blue walked through the forest, upset. Danzo forced Gramps to send me on this mission. Kill the Fourth Mizukage? Is he crazy? I'm all alone, too. I've been sent to die, haven't I? Blue looked for a place to stay the night. She cane across an old cabin, with the door ajar. As she walked in, she froze. There sat a small boy, crying over what seemed to be his dead mother. Another corpse was there as well, hos father maybe? "O-oi. Are yoy alright?" Blue asked the boy, "What's your name?"
"H-haku."
...
Instead of carrying on with her mission, Blue stayed with the boy for a month. For what she had gathered, his father had killed his mother for having a unique jutsu, and Haku, the boy, went into shock and killed his father. Judging from the scars, and bruises when they met, Haku had been abused. Since Blue specialized in water techniques, she used those and had Haku freeze them with his ability, teaching him how to fight. Everynight as she laid to rest with Haku, she thought , Is this what it would be like, if me and Naruto were allowed to see each other? Haku and Blue ate together and played together and told stories very diverse from each other, for they were from different villages. Even though Haku did not live in the Hidden Mist, they watched over Haku's village, so their culture was much the same, especially their stories. However, Blue had to leave and she couldn't take Haku with her. She guessed Haku was atleast 2 years younger than her, he would definitely be killed. Looking down at her wrist, she saw the bracelet her mother, Kushina, made her. It was meant to symbolize 'Love' something Blue still didn't quite understand about humans. Slipping the bracelet on Haku's wrist, she kissed him on the forehead and left to complete her mission.
...
Back to present.
...
As Haku ran away with Zabuza in his arms, Naruto helped Blue up and they headed to where they were staying.
Once they got there, Blue met a boy named Inari, who had lost his father. He was 6. The same age as I when I lost Mama and Papa, Blue thought.