In Konoha: Eating Goro Goro no Mi at start.

It is impossible for Rei and Tsunade to spend all their time on the development of senjutsu.

So they used shadow clones and they began to practice physical skills.

Not only that, the development of wood style and magnetic style was also carried out at the same time.

Life is busy, but also very peaceful.

  ...

"Huh~"

As the shadow clone that practiced nature energy control collapsed again, Rei exhaled a long breath of foul air and lay directly on the ground.

"What's wrong?"

Tsunade, who was practicing on the side, asked Rei.

Because Hiruzen and the others went out to do missions, Tsunade and Rei did not go to the third training ground of Konoha to practice.

Instead, they practiced in the central lake, a place that carries all the memories of the two.

"A little tired."

Rei closed his eyes and said silently.

"Then take a rest."

Tsunade came to Rei's side after hearing the words, lifted Rei's head and placed it on her lower abdomen, slowly kneading Rei's temples.

"I thought I wouldn't have to practice like this when I was sixteen."

Enjoying Tsunade's service, Rei said silently.

"There's nothing I can do. Rei is the only one in Konoha who has the strongest control over nature energy."

Tsunade chuckled and said to Rei. After a pause, shecontinued to say to Rei.

"But don't worry. If you get tired, just stop and take a rest."

  "Yeah." Rei nodded and fell asleep unknowingly.

  ...

"Mōryō?"

Senju Tobirama frowned slightly as he looked at the information sent back by Sarutobi Hiruzen.

A witch from the Land of Demons? The ability to predict death?

Need support from ninjas who can perform sage arts?

"Ah..."

Tobirama Senju threw the documents in his hand on the table and rubbed his eyebrows with a headache.

Why has the ninja world become so troublesome since his eldest brother passed away?

Three elite ninjas who are stronger than jonin are now stuck on an S-level mission.

Do they need support from ninjas who can perform sage arts?

Very good, there are only three ninjas in Konoha who can use senjutsu now, one is with Hiruzen, and there are two left in the village.

Instead of asking ninjas who can use senjutsu to provide support, it is better to directly say the names of Tsunade and Rei.

Sending Rei and Tsunade...

To be honest, at this moment, Senju Tobirama was really a little hesitant.

When the Chunin exam involving the entire ninja world was held, the main purpose of Senju Tobirama was to show the strength of Konoha to the entire ninja world.

In this way, on the one hand, it can put pressure on the other four hidden villages, so that they dare not easily take action against Konoha.

On the other hand, it can better bring tasks to Konoha, so as to better train Konoha ninjas and increase Konoha's income.

At present, these two goals have been achieved, and even with the popularization of steam engines later, Konoha's speed of making money has reached a higher level.

But the problem now is that Konoha's strength has grown too fast, and now the other four hidden villages have begun to get restless.

This can be seen from the increasing number of rebellious ninjas and wandering ninjas in the ninja world.

At this time, if Rei and Tsunade were sent out, it would be very likely to be the last straw that broke the camel's back.

It would become the fuse that ignited World War II.

Although Tobirama has not seen Rei use his full strength since Rei came back, judging from the way Rei defeated Orochimaru with ease,

  Rei is really strong now.

It may be difficult to find a ninja stronger than Rei in the entire Konoha.

Once such strength is exposed to the eyes of other hidden villages, the consequences can be imagined.   

Except for Konoha, no hidden village is willing to watch a ninja who is strong enough to match Hashirama and Madara appear in Konoha.

Especially this ninja is only sixteen years old this year.

Although Rei has not yet opened the Mangekyō like Madara, Rei has already learned the sage technique.

Sage technique plus three tomoe plus superb lightning style.

In fact, for other hidden villages, such a ninja is basically no less than Uchiha Madara or Senju Hashirama.

Anyway, they can't beat him.

Therefore, as long as Rei dares to expose his full strength in public, the consequence will inevitably be that all the major hidden villages will attack him.

After all, if more people are sent to surround Rei now, it is possible to kill him.

And the Land of Rain, Bird and Bear that must be passed between the Fire Country and the Land of Demons are next to the Land of Wind and the Land of Earth.

If you send them out, they may not come back.

However, since Hiruzen has sent back the information that he needs support, the pressure on Hiruzen must be very great.

It really gave people a difficult problem...

"Dong, Dong, Dong..."

The fingers tapped the table lightly, and after a long time, Senju Tobirama stood up.

Support must be sent.

As for the war, let's fight it!

  ...

  Central Lake.

"Tired?"

Looking at Rei sleeping in Tsunade's arms, Senju Tobirama had a little smile on his face.

"Ah... Lord Hokage."

Rei opened his eyes, climbed up from Tsunade's arms, and called to Senju Tobirama.

"Still calling me Hokage now?"

Senju Tobirama chuckled and asked Rei.

"Ah... Second Grandpa." Rei smiled and called to Senju Tobirama.

"You have really worked hard during this period."

Senju Tobirama patted Rei's shoulder. During this period, Senju Tobirama had seen everything Rei had done.

This made Senju Tobirama feel relieved and happy about the choice he made at the beginning.

Uchiha Rei, now is the courage that Senju Tobirama has to go to war with the entire ninja world.

Rei just smiled and said nothing when he heard this. It is not terrible to be tired, but it is terrible to be tired but not get enough rewards.

Relatively speaking, Senju Tobirama did very well in this regard.

Otherwise, some techniques would be difficult for him to obtain even if Tsunade had a good relationship with him.

"Is there any mission?"

Rei asked Senju Tobirama.

"Well, Sarutobi and the others are in trouble and need your support."

Senju Tobirama nodded and said to Rei.

"Can't other ninjas go to support?"

Tsunade frowned slightly and asked Senju Tobirama.

"The target is special, so we need ninjas who can perform sage techniques to support us."

"What would you do without the two of us?"

Tsunade sighed helplessly, took two steps forward, patted Senju Tobirama's arm, and said earnestly.

"What can we do? Grandpa is old, and now we can only ask Tsunade for help when we encounter difficulties."

Senju Tobirama glanced at Tsunade, a doting smile appeared on the corner of his mouth, and he rubbed Tsunade's hair, saying with self-mockery.

Tsunade pursed her lips when she heard it. Perhaps because Senju Tobirama was born with white hair, Tsunade never thought that Senju Tobirama was old.

But now, Tsunade suddenly found that her second grandfather seemed to have more wrinkles and age spots on his face.

"But this time, I may not need to bother Tsunade."

Senju Tobirama chuckled and said to Tsunade.

"Didn't you say that we need ninjas who can perform sage arts to support us... You don't want Rei to support us alone?"

Tsunade suddenly realized what she was saying and looked at Senju Tobirama in disbelief.

"Yes, I just want Rei to support us alone."

Senju Tobirama nodded and turned to look at Rei.

"How is it? Can you survive the full speed of going to the Land of Demons using elemental transformation?"

Senju Tobirama asked Rei.

Rei chuckled and pointed to his chest, where Yin Seal was present.

"No problem."

"Okay, take this."

Senju Tobirama nodded and took out a kunai from his arms and handed it to Rei.

"After the mission is over, throw this kunai out, and I will bring you back with Flying Lightning God."

Senju Tobirama said to Rei.

"Okay, I understand."

Rei nodded and put the kunai in his arms.

"Well, go ahead. I'll give you a long vacation after you come back this time."

Senju Tobirama nodded and said to Rei.

  ...   

"How can such a thing exist?"

 Hiruzen frowned as he looked at the place completely covered by the barrier below.

"But now, there is nothing we can do except wait."

Orochimaru shook his head helplessly. If such a strong barrier could be broken, the only technique Orochimaru could think of was the Super Railgun that Rei had used during the Chunin Exam..

"If I knew sage techniques, I might give it a try."

 Hiruzen frowned.

"If I could be stronger..."

Jiraiya looked at the scene in front of him and said unwillingly.

"You've done very well." Hiruzen glanced at Jiraiya and patted Jiraiya's arm comfortingly.

No one expected that the mission target would be so difficult.

  "Boom~"

At this moment, a sound like lightning sounded.

 Hiruzen and the other two looked up instantly.

Before this, there was no sign of rain, but now there was lightning. Does that mean...

sizzle!

A bolt of lightning struck from the clouds, and the next moment, Rei appeared in front of Hiruzen.

"You came just in time, Rei!"

Sarutobi Hiruzen patted Rei's shoulder, with an undisguised joy in his tone.

"What's the situation now?"

Rei calmed down his breath, took out a Military Ration pill and ate it, took the water bottle handed over by Orochimaru, raised his head and drank it.

For Hiruzen and the others, it would take a full week to get from the Land of Fire to the Land of Demons.

But for Rei, turning into lightning and rushing to the Land of Demons at a speed infinitely close to the speed of light, it was actually just a "whoosh" to get there.

Of course, this is only theoretically possible. Lightning needs to ionize the air to propagate in the air.

Theoretically, Rei can move at a speed infinitely close to the speed of light, but at the same time, the consumption of physical strength is also completely proportional.

"Now..."

Hiruzen pursed his lips when he heard this. To be honest, with Rei appearing here, Hiruzen was a little hesitant.

 Hiruzen didn't know how many spies from other hidden villages there were in the Land of Demons.

But Hiruzen was sure that what happened here would definitely spread.

If Rei's performance was too amazing, would it cause an overreaction from other hidden villages?

Is it really worth it to cause the war to break out early for an S-level mission?

Hiruzen made a decision.

"Can Jiraiya still enter the Sage Mode?" Hiruzen asked Jiraiya.

"Yes!" Jiraiya gritted his teeth and nodded.

"Later, the three of us will use the strongest ninjutsu to weaken the barrier, and Rei will find a way to rush in directly."

 Hiruzen said to the three people in front of him.

Even if it was just a show, it was better for four people to work together to break the barrier than for one person to penetrate it directly.

"Okay."

Rei nodded

  (End of this chapter)