Start with the Mangekyō and leave Konoha with Madara.

"The reason for becoming stronger?"

Nagato responded without hesitation, "I also want to be like you, my senior, and be able to show enough strength to protect everything I have when I need it most."

"Oh?" Shen Yu raised his eyebrows slightly, feeling quite surprised.

"I was still young that year and didn't know how difficult life was. If it weren't for Senior's rescue and bringing me and my parents back to the Land of Whirlpools, I'm sure..." Nagato lowered his head silently, "We would have been swept up in the war in the Land of Rain, and our family would have been destroyed..."

"From that day on, I understood that only if we have enough strength can we respond when disaster strikes."

He raised his head, his eyes burning, "So, in order to avoid tragedy, I must become very strong, strong enough to protect everything I want to protect, strong enough to ensure that there will be no more wars in this world, strong enough to... protect all the beauty in this world!"

Looking at the thin, red-haired boy in front of him, Shen Yu was suddenly stunned for a moment, with subtle emotional ups and downs in his heart, a feeling that was hard to describe.

I have changed so many things...

In the original time and space, Nagato was affected by the war and became an orphan who wandered around the world.

After losing his parents, close friends, and his hope for a beautiful peace one after another, his last bit of beautiful fantasy about the ninja world was shattered. From then on, he became the leader of Akatsuki with extreme thoughts, trying to make the world feel pain.

Because... there is no true empathy in the world. Only by letting these violent guys personally experience the pain of losing everything, will they understand Nagato's thoughts and yearn for peace.

Even so, he did not give up his dream and continued to work hard for true and pure peace in the world. However, the way to achieve peace was no longer the same as before.

His goal is to collect the nine tailed beasts, inject them into the Outer Path Demon Statue, and thus forge an ultimate weapon that can destroy a country at any time, so as to deter other countries and achieve long-term peace.

It has to be said that his approach, to some extent, coincides with that of Hashirama Senju, except that the former was intentional intimidation, while the latter was intimidation without realizing it.

but now……

Nagato is a guy with a pure heart, just like an angel.

Shen Yu asked softly: "Is this the reason why you practice here day after day?"

"That's right." Nagato nodded.

Shen Yu glanced at the bloodstained wooden stake and shook his head, saying, "If you really want to become stronger, you can't just practice as hard as you do. Instead of practicing physical skills here, you might as well go back and study the sealing technique and don't waste your talent."

"In fact, I have already understood some of the sealing techniques of my clan." Nagato stretched out his hand, a golden light flashed on his palm, and several light golden chains gushed out, swaying in the air.

Shen Yu's eyes lit up, and he gave a thumbs up without hesitation, "Not bad, you have the style of me back then! As long as you follow the right master, your future achievements will not be bad."

Nagato's eyes suddenly dimmed. "At first, I asked Senior Orochimaru to accept me as his apprentice, but was rejected. Senior said that he had not yet completed his apprenticeship, and if he taught me, he would be afraid of misleading his disciples..."

“This kid…” Shen Yu put his hands behind his back and shook his head, “Maybe he doesn’t think he has made any remarkable achievements. If you really want to become his disciple, you can try later.”

"Well! Then I'll listen to you, benefactor!"

If you succeed in becoming my disciple, you will have to call me Grandmaster...

After thinking for a moment, Shen Yu touched his chin and said, "Nagato, I came here today because I need your help with something."

"Ah!" Nagato was startled, his pupils trembling slightly, "What on earth is going on? Would my benefactor actually ask me for help?"

"Don't worry, you don't have to do this favor. Once you accept, it means you will have to say goodbye to your peaceful and comfortable life. You will leave your parents and be involved in disputes against your will."

"Is that so..." Nagato muttered.

"Now that I've talked about the disadvantages, let's talk about the advantages." Shen Yu changed the subject, "That is, you will immediately gain a power far beyond your imagination, and this power will grow with you little by little. From now on, you are no longer that weak and fragile child, but an existence that everyone has to pay attention to, and you will be among the truly strong ones!"

Nagato didn't hesitate for long, and immediately took a few steps forward, looking solemn, "My benefactor, I do!"

"Don't you want to think about it again?" Shen Yu paused, "I said, you don't have to be the only one to be chosen."

"My benefactor, I want to improve!"

Nagato bowed deeply and said sincerely, "To accomplish great things, one must pay a certain price. Moreover, you have saved my family. It is my honor to be able to help you. As long as you say a word, I will climb mountains of swords and walk through seas of fire. What fear do I have to go through fire and water?"

Shen Yu was delighted and laughed heartily, "Okay, I never thought you were such a straightforward guy!"

He raised his hand and the clear sound of the sword sounded like a dragon's roar. With a flash of green light at his waist, "The Heart of Frost" was automatically unsheathed, circling for a few weeks like a dragon, and hovered steadily in front of the two of them.

"Go up." Shen Yu said lightly.

Nagato hesitated a little, looking at the slender blade, a hint of surprise flashed in his eyes.

"Didn't we just say we were going to climb the knife mountain? Now, stand on it." Shen Yu smiled gently, with a hint of teasing in his eyes.

Nagato gritted his teeth, raised his foot and stepped lightly on the blade, testing its weight before stepping on it with his other foot. The divine sword was as steady as a rock.

He calmed his breath and urged chakra to flow to the soles of his feet, trying to maintain his balance.

Shen Yu bent his knees and jumped up, his black windbreaker flying through the air like a leaf in the wind, and he stood lightly behind Nagato.

"Take you for a ride."

He placed one hand on Nagato's shoulder, and the divine sword rose up with the wind, carrying the two of them into the sky.

The whistling wind passed by his ears, and the mountains and rivers all came into his eyes. In just a moment, Nagato's fear disappeared, and he was completely immersed in the novel experience of Feng Xu flying the sword.

The divine sword emitted a bright green light, forming a streamlined chakra barrier that not only blocked the strong wind, but also allowed the sword to be controlled more smoothly.

"Magnetic Escape·Sword Control·Speed!"

Shen Yu shouted softly, and the divine sword suddenly accelerated, turning into a dazzling green rainbow and disappearing into the clouds in an instant.

The speed of flying the sword was extremely fast. This was the second time that Nagato experienced the feeling of flying.

Compared to the comfort and ease of riding the Susanoo, he now felt as if he was stepping on a bolt of lightning. It was thrilling, with adrenaline secreted like crazy, and he felt like he was about to die of pleasure.

A green light suddenly appeared, as fast as thunder.

Thousands of miles away, yet seems so close.

In just a moment, the two arrived at their destination. Nagato jumped off the Sacred Sword in a daze, looking at the strange island and the humid air around him, still not understanding where he was.

"This is the Land of Thunder, Yunlei Gorge."

The divine feather fell behind him, and the divine sword circled around, turned into green light and automatically returned to its sheath.

"The Land of Thunder?" Nagato was confused, but he was secretly excited.

From childhood to adulthood, he has never been to such a far place.

In fact, he had a dream of traveling around the world since he was a child, and walking to every corner of the ninja world on his own two feet, but due to his limited ability, he has not been able to realize it.

"All this is because of my benefactor..."

He looked at Shen Yu's tall and handsome back, his mouth open blankly, with stars shining in his eyes.