I became Naruto Uzumaki's younger sister

"Grandpa Third Generation, I'm telling you%@:://:@@:/!!!" Naruto emphasized to Sarutobi Hiruzen with an excited look on his face.

Sarutobi Hiruzen's expression was also very serious: "So another ninja who can use space ninjutsu appears? And he is still targeting Naruko."

"Yes!" Naruto slammed the table hard.

"Then this is too dangerous, but the number of people in the space is too convenient. It is not good at all. Just stop it." Sarutobi Hiruzen frowned, very troubled.

"Then what should we do, Third Generation Grandpa?" Naruto looked anxious.

Naruko watched from the side, always feeling that this situation was very embarrassing. She couldn't expose it. It must be her puppet vest.

"Grandpa, from what Naruto said, that person doesn't seem to be very powerful, so there's really no need to make a fuss." Naruko tried to advise.

Sarutobi Hiruzen said to Naruko very seriously: "Don't underestimate space ninjutsu. He has many opportunities to sneak attack you, but it is difficult for you to catch him."

"Yes, sister, you must be careful." Naruto agreed on the side.

"Okay, okay." Naruko could only agree.

Sarutobi Hiruzen stood up, stretched out his hand to hold the two of them, and walked to a hidden room.

Then he took out a codex from a pile of scrolls and codex books and handed it to Naruko.

"The hand prick I am giving you now contains the learning method of Flying Thunder God. It was also written by your father himself."

Naruko felt excited, could she finally learn to fly the Thunder God?

Naruto was also very curious about this hand. In fact, he was more curious about what kind of person his father was.

Hiruzen Sarutobi saw the excited or curious expressions of the two people, and smiled and talked about Minato: "Minato was born as a commoner, but he successfully learned the Flying Thunder God and improved it. In terms of spatial perception and reaction ability, I have not encountered any problems. There have been people who were stronger than him, not even my teacher, the Nidaime Hokage Tobirama."

"Is father so strong?" Naruto exclaimed. In his eyes, Naruto was already very powerful.

Sarutobi Hiruzen didn't say much, but looked at Naruko: "If you can learn to fly the Thunder God, then you will no longer be afraid of space ninjas."

Naruko nodded solemnly and then started to read.

Sarutobi Hiruzen looked at the stunned Naruto and said with a smile: "You should also take a look. If you also learn it, that would be better."

"Okay!" Naruto was full of confidence and immediately squeezed Naruko's head together, looking at the small hand.

"Sensing a spatial anchor point proves that you have spatial talent." Naruko started trying directly.

He sensed it soon, and then nodded under the expectant gaze of Sarutobi Hiruzen: "I should be able to learn it."

"This is great!" Hiruzen Sarutobi happily touched Naruko's head and explained.

"Since the Flying Thunder God was created, there are only two people who can learn it. The other one is your father who improved the Flying Thunder God. The completed Flying Thunder God Formation requires three people to perform it together, which is very troublesome."

Naruko asked in surprise: "Have many people learned it?"

Sarutobi Hiruzen nodded: "Ninjutsu like Flying Thunder God is very practical and of great significance. I have learned it before, but I don't have space talent. The same goes for Orochimaru and Jiraiya. They both made it clear that they can't sense. To the spatial anchor.”

"But there are some exceptions. Similar to Kakashi, he can sense a little bit, but it is impossible to learn to fly the Thunder God."

Naruko nodded, sighing once again in her heart, the learning talent given by the system is really powerful.

"Naruto, what about you?" Sarutobi Hiruzen looked at Naruto who had been holding back for a long time with some excitement.

Naruto was a little disappointed: "I don't seem to feel it."

Sarutobi Hiruzen touched Naruto's head again and comforted him: "It's okay, you can't force this ninjutsu."

Naruto nodded. He was just trying to learn this ninjutsu to catch Wendy who wanted to harass his sister.

"Then Naruko, please write it down quickly and practice more when you go back."

"Okay." Naruko started to remember.

With her super memory, she memorized everything in a short time, Naruko returned it to Sarutobi Hiruzen, and then took Naruto home.

After returning home, Naruko began to carefully recall the contents of the handbook. The first contents were very normal, about how to learn the Flying Thunder God, but the following uses of the Flying Thunder God, as well as the combinations of moves, and the names were all very It's weird.

There are a lot of names like "Three Styles of Spiral Flash Super Wheel Dance Roar", "Flying Thunder God Super Flash Instant Kill Second Formation", "Hyper Space Transfer Black Dazzle".

“My father’s names are all great!”

Naruko, who was also a name-breaker, admired Namikaze Minato's naming method.

At the same time, Naruko also learned the meaning of "Flying Thunder God [-]nd Stage". It turned out to be throwing out the kunai with the flying thunder god's mark, and while attacking frontally, it instantly transferred to the moving kunai for a secondary attack.

This is called the second stage of Flying Thunder God.

In the following time, Naruko mainly studied the Flying Thunder God whether in school or training.

Even though she has the strongest learning talent, her progress is not fast. A week has passed, and she has barely imprinted the chakra with the space mark on the kunai, and it cannot be transferred yet.

This also made Naruko truly realize how talented his father was, but he was not in a hurry, because even if it was slow, there was progress after all.

After school, Naruko went to Tsunade to learn medical ninjutsu, but Sasuke suddenly stopped her.

Because of Mikoto, Naruko now has a very good relationship with Sasuke, and they have a meal together every two or three days from time to time.

"Are you going to your house for dinner again tonight, Sasuke?" Naruko asked subconsciously.

Sasuke looked a little shy and denied, "No."

Naruko was a little curious: "What is that for?"

"That's why I want to know, how, how did you improve so quickly." Hello Sasuke, feeling a little offended, but he urgently wants to know the answer.

In this week, Naruto, who learned the art of multiple shadow clones, had a direct increase in strength. In the first few times, he was unable to defeat him because of his lack of proficiency, but later on, Naruto mastered the art of multiple shadow clones.

At the beginning of the battle, more than a hundred shadow clones were used directly, swarming up and targeting Sasuke overwhelmingly.

Because the Sharingan can't see through shadow clones and the main body, even if Sasuke has learned a lot of Uchiha's secret fire techniques, he still can't defeat him and has been defeated many times.

Forget about defeat, but what else did Naruto say, since he defeated Sasuke, he should change his goal and move on.

Sasuke was almost mad to death and broke off friendship with Naruto on the spot. A few days passed and he didn't say another word to Naruto.

At the same time, the huge sense of oppression in his heart made him look for Naruko.