Naruto: Time guardian (Chapter 3)

"Hey ! Shikamaru! Choji !" Naruto shouted as he entered the park. Many childrens were already playing in the hillside park. Behind Naruto, Mito walked in slow pace. She was wearing a black full sleeved turtleneck shirt and black full pants. With a Uzumaki symbol shaped locket hanging on her neck. With her short smooth blondie hair, no one can say that either he is a boy or a girl.
"Hey Naruto ! Over here !" A fat kid called out from the distance. But Mito started searching for potential training places. Her training for the day is not completed yet as Naruto dragged him to the park. But she was planning to resume her training once she found a spot. She won't use resistance seal on her body right now as it will harm her growth. But the regular training can continue.
"Naruto," Mito called him out.
Naruto stopped in his tracks. He turned around
"What is it Mito ?"
"I am going to train over that area. So when you are finished playing you can come to me ." Mito informed him.
"Hey, can't you play even for a day ? We will play ninja you know ! It will be fun you know !"
Naruto pleaded.
But Mito shook her head. "I will come back once I finish it."
"Okay." Then Naruto ran off.
Even as twins, they barely played with each other. The elder twin Mito was too mature for her age. She is usually silent and a loner. And the younger twin was a ball of energy. So they are pretty different from each other.
Mito glanced at the direction of the Anbu for a brief moment. This isn't the first time she has seen masked figures following his brother. But the fact that she has never went out of the home alone, is the reason that she guessed that the masked man is to protect both of them. She is still unaware of her brother's status as Jinjuriki.
She went to a secluded place and started her training.
100 push ups, 100 sit ups, 100 squats and many types of stretches. It took Mito around two hours to complete her exercise. It's amazing that how the body of this four years old girl has almost same level of power as the male body in her previous life.
After completing the set of exercise, she sat down under a tree. Then unsealing her note book and the pencil from her storage locket, she began her studies. Currently she is studying about different types of storage scrolls. But her objective is to make her own storage seal. So she went to studying the notes she had made about the dimensional void.
She has done no more study than necessary for her line of work in her previous life. But that doesn't mean she didn't like it.
While writing down on her notebook a calculation, Mito's instincts flared. As a killer, she has a great amount of awareness of her surroundings.
She instantly tilted her head and rolled away.
Looking at her attacker she first saw one shinobi a few meters away from her standing on a tree branch. A glance at her surroundings revealed two more attackers. She could faintly here the clash of metals at a distance.
The next thing she noticed about is the headband. It was slashed. But the mark,
' Hidden stone '
The first man attacked her.
' I will focus on making a gun after this. '
Mito dodged the first strike then threw her notebook toward the assassin.
With a swing of his kunai he cut it in half. The man this time, attacked with more speed.
Mito barely managed to dodge. Changing tactics, she coated her pencil with chakra and ducked low to dodge another swing. The man became frustrated and moved faster. This time Mito didn't dodge. Guarding with her arm she moved side wise. The kunai cut her skin. But the pencil found it's way to the assassin's crotch.
In her previous life, Mito would have never done this. But here she doesn't care.
The man's scream didn't left his throat as Mito took out the bloody pencil swiftly and shoved it into his throat killing him instantly. She didn't stop.
Mito pulled out the pencil and took the loose kunai from the loosening grip of the ninja. Covering her arm and the kunai with chakra she spun around and threw it with all her might.
The kunai soared toward a tree the surprised shinobi didn't have even time to dodge at the kunai found it's way to the forehead of the man.
The man fell down from the tree, his body limp.
Mito heard a scream of rage.
"You brat ! You are definitely the spawn of that monster ! I am going to kill you !"
In rage, the man revealed himself. Going fast through some handsigns, he screamed in rage.
The earth infront of Mito distorted and started to turn spiky.
Quickly turning around she used the corpse of the ninja and lifted it to use it as a shield.
The corpse got pierced at multiple places. Mito used that moment to grab his shinobi pouch and jump away using his body as a platform. Quickly opening it she found the thing that could prove to be the most powerful weapon right now. Five explosive tags. She didn't wait. Pulling out a kunai she stuck the tag in it. Activating the seal, she threw it towards the man. He doged it easily. But he never expected the explanation behind him.
That threw him forward.
At that moment Mito heard Naruto's scream. But she continued her attack the sooner she finish them, the sooner she will be able to go to her brother.
She quickly threw another one but this time she didn't activited the explosive tag. The man did what she expected. He dodged and ran towards her with a kunai.
She jumped high and attacked him with a kunai.
With a disdainful face, he tried to push the kunai away. Probably thinking of sending her flying away. But what he didn't expect, her to spin his body and cut his arm of.
Mito didn't pause. She continued her momentum and stabbed the man in his eyes with her pencil. Then with a punch to it's other end the pencil entered deep in his skull killing him instantly.
Then taking two fallen kunais beside the man Mito spun and dashed towards the direction of Naruto's scream.

...

Naruto was playing with Shikamaru, Choji, Kiba and three other children. He knew the three clan heirs from his fourth birthday last month. Since then they often met in the park with their mother. Though Mito never came to the park. She always goes for shopping with Kushina but never went to park.
"Naruto ! It's your turn !" Kiba Inuzuka called out.
"Alright ! Here we go !" But before Naruto could take out his wooden kumai, a masked nin fell down from the trees a few meters away from him.
"Quickly ! Run away !" The masked ninja shouted at him.
Naruto was frightened. He fell down on his butt.
Right then the sound of explosion was heard.
Quickly another Ninja with a different headband dashed towards Naruto. But the masked nin intercepted him. Another ninja came at him. But suddenly someone pulled Naruto back. It was Shikamaru.
"Run ! You idiot ! That's enemy shinobi !"
Quickly he picked himself up and ran along with Shikamaru and Choji.
But they didn't go far away as the Ninja grabbed Naruto from behind of his collar.
"Ahhhhhhh !!! Let me go !" Naruto screamed. With a clang sound , and Naruto found himself on the ground again. This time he tried to run away as fast as he can.
But suddenly a gust of wind hit him, choji and Shikamaru.
It wasn't too powerful. But it sent the three boys crashing to a tree.
Shikamaru saw one man coming towards them while the other was engaged with the masked ninja, Anbu probably.
The man extended his hands towards them or towards Naruto. But suddenly a kunai was in the head of the man and then a boy about their age, jumped down on the kunai plunging it even deeper to the man's skull.
He felt bile rise in his mouth seeing the dead body infront of him.
The boy was in all black.
The blondie haired boy turned towards them. He remembered. He, no she is Naruto's sister. He has seen her a month ago on their birthday. The children of the fourth hokage. She was a loner who likes to wear boy's clothes. But he didn't get time to ponder on the death infront of him as the second man somehow bypassed the anbu and suddenly appeared before them.
Shikamaru wanted to shout at her to get away.
But without turning back,with a swift motion, her hand moved. With the kunai, she splitted his neck open. Blood poured on her blonde hair dieing it red.
She quickly dropped the kunai and ran towards Naruto.
"Naruto ! Are you okay ! Hey are you listening ? Naruto !"

...