Nobita, who came out of the Hokage's office, stood downstairs, finishing his business, listening to the Hokage's meaning, these two days should be a holiday, and there was no other task arrangement.

Nobita walked towards the Uchiha clan gathering area, taking advantage of his leisure to find Lingling for a good date.

Nobita arrived at the gathering place of the Uchiha clan and went in to find Lingling's house, who knew that Lingling had gone on a mission, and I don't know how many days I will come back.

Nobita had no choice but to go to the Houshan cultivation site to practice.

Nobita walked to the cultivation ground, Nobita was thinking about his weaknesses, his lightning resistance has been greatly improved, and it is rare that he will be eaten by his own lightning escape when he is fighting like before, causing paralysis.

But at the moment, the amount of chakra is a big problem, Nobita doesn't have Naruto's physique, and he is not a member of the Uzumaki clan, and the amount of chakra is not much, and the amount of chakra is about the same as that of an adult Kakashi now (the adult Kakashi has not grown much compared to the juvenile Chakra). Nobita wants to train his chakra amount, but there is no good way to do it at the moment.

Thinking of this, Nobita stopped, and Nobita decided to cultivate what he wanted to learn at the moment.

Nobita sat cross-legged on the ground and began to operate the chakra in his body, first turning the Thunder Chakra, and then turning the Water Escape Chakra, and the two chakras began to merge, with both the power of the Thunder and the controllability of the Water Escape as the premise and began to fuse.

The fusion of the chakra attributes was not smooth, the chakras of the two attributes had been repelling each other in the body, and it was difficult to achieve fusion, and the sweat on Nobita's head kept flowing down.

Nobita thinks that maybe his current method is wrong, the water escape itself will conduct electricity to the thunder escape, but the premise is that it cannot be pure water, Nobita learned in junior high school physics class in his previous life, pure water is not conductive, only water containing electrolytes will conduct electricity, will it be that the water escape in the body is caused by pure water There is no way to fuse.

So Nobita first walked around the water escape in his body, added the electrolytes in the blood, and then injected the thunder escape into the water escape, a miracle happened, the chakra of the two attributes began to fuse, Nobita was very happy, the chakra fusion that he had been thinking about for so many years was successful, and Nobita immediately gathered the fused chakra in his hand, "Lan Dun!" ”

The ninjutsu of the fusion of Lei Dun and Shui Dun is Lan Dun, which has both the destructive power of Lei Dun and the plasticity of Shui Dun. The Lan Dun gathered in his hand has an amazing destructive power, but it is not as electric as Lei Dun.

Nobita then began to try to use different proportions of thunder and water to try the effect, of which the water escape thunder escape ratio is the most powerful at 1:9, at this time Lan Dun is like a laser straight out, when the ratio of 2:8 is reached, Lan Dun can use the characteristics of water escape to carry out a small arc of turning, if you need to reach a large arc of turning, you need to reach 3:7 stimulation. When the 4:6 ratio is reached, Arashi Dun can form ninjutsu in various shapes.

Nobita is very happy in his heart, in this way, he can invent a lot of powerful ninjutsu in the future, such as Lan Dun Water Body, Lan Dun Water Dragon Bomb, and he can also use Lan Dun to form a lot of laser ninjutsu.

Nobita is very excited, and now he can use Lan Dun to learn the doppelganger technique first. Nobita adjusted Lan Dun's chakra and began to practice the doppelganger according to the steps of the water body.

Nobita spent an afternoon training Lan Dun Shui Body. This doppelganger Nobita did an experiment, and the nobita that came out of the clone was no different from the water body, but once the enemy defeated the clone, the doppelganger would explode, and Lan Dun would collapse in all directions, attacking the surrounding enemies.

Nobita now has to keep his meeting a secret from Lan Escape, otherwise someone like Tuan Zang will know that it will definitely lead to trouble again.

In the evening, Nobita returned home, and Nobita spent all the two days practicing Arashi Ninjutsu, and Nobita felt as if the door to a new world had been opened.

On the third day, Nobita came to the designated location to meet Bukithiro as agreed. Bushiro stood in place, saw Nobita coming, and said, "Welcome, how are you thinking about it, Hideo Sanada." ”

"I agree to join "root". ”

"Very well, this will be very happy for Tuanzang-sama."

"But I'm now in the shadow side of the Hokage, and there's no way to go directly to the "root". ”

"You don't have to worry about this, Lord Tuanzang will have a way."

"I want to know, what is the forbidden technique that I joined the "root" to say? ”

"I can't tell you this yet, I need to keep it a secret from you, and you'll know when the time comes."

“……”

"Okay, it's a pleasure to meet today, and we'll work together next time we meet."

After Bujiro finished speaking, he used a teleportation technique again and left.

A week later, the Hokage issued a document and Nobita was officially transferred to "Root". Nobita took the document to the "root" to report, and it was Bukithiro who received Nobita, who took Nobita into a building, passed through the basement of the building, and came to an elevator, Nobita and Bujiro took the elevator to the underground, and the headquarters of "Root" was deep underground.

Out of the elevator, Nobita and Bushiro walked out, and there was no sunlight at the headquarters of "Root", only a few dim lights. Bujiro led Nobita to the center of the hall, and Danzou was sitting on a throne in the center of the hall.

Bujiro led Nobita to the bottom of Danzo, Bujiro first knelt down on one knee, and then Nobita followed Bujiro to kneel.

Bujiro said respectfully to Danzou, "Danzo-sama, I brought Hideo Sanada here. ”

Danzo sat on a chair and said in a low voice, "Hideo Sanada, lift your head and let me see you." ”

Nobita raised his head and looked at Tuanzang, Tuanzang's majestic gaze looked at Nobita, Nobita looked at Tuanzang's eyes, it was a pair of eyes that were murderous and ruthless, at this time, the water was not dead, and Tuanzang was not wrapped with bandages all over his body.

"Sanada Hideo, he has the strength to forgive at a young age, and he can learn the art of flying thunder god, he is really a rare talent, I hope you will work well for the "root" in the future. ”

"Yes"

"Alright, Bushiro, you can take Hideo down to meet his teammates."

"Obey the orders of Danzo-sama."

After that, Bushiro took Nobita to meet all the people of "Roots" one by one. What impressed Nobita the most was that there were still a lot of children in the "roots", including the Yamato that Nobita knew, but the current Yamato should be called A.