Start with the Mangekyō and leave Konoha with Madara.

Shen Yu looked at Uchiha Guang with a resentful look in his eyes.

After being warmly embraced by Amaterasu, he was really unhappy. If it weren't for his special eye technique, he would have turned into ashes by now.

The temperature of the flame was so terrifying that he was still a little frightened.

Although time and space can be reversed, the pain is real!

Madara waved his hand and said, "Shenyu, let her go."

"But she might suddenly attack us again." Shen Yu was still a little scared.

"Don't worry, she can't do it." Madara's tone was calm, revealing the absolute confidence of a super shadow-level strong man.

"Yes, Madara-sama."

Shen Yu moved his body as he was told and let Uchiha Guang stand up.

Madara looked down at Uchiha Hikaru, a gentle voice floating into her ears.

"What Shen Yu said just now is all true, but there is only one thing... Whether the war is really over remains to be considered. For the ninja world, peace is only temporary. It is still a long way from the ideal world in my mind."

"An ideal world... huh..." Guang murmured.

"Liberating you means we recognize your strength. On this road to pursuing our ideals, you can move forward with us as a companion, not a weapon."

Madara changed the subject, "Of course, you can also leave and live the life you want."

"Ah?" Shen Yu was stunned and looked at Ban with some confusion.

"But let's face the reality. Before we succeed, this is still a false world, still full of unsatisfactory things." After saying that, he turned around and walked away.

Shen Yu's feathers were a little messy, and the light he released at the cost of his life was actually ignored by Madara.

There was no choice but to follow after him, leaving her alone, he glanced at Uchiha Hikaru hesitantly.

"Does Lord Madara really not care about Uchiha Hikaru? Or does he want to win her over with his personal charm?" Shen Yu frowned, and couldn't help but ponder in his heart.

Uchiha Guang stood there blankly. She didn't know how long it had been. She came to her senses, looked at the two figures gradually moving away, and suddenly took a step forward.

……

"She really caught up!" Shen Yu came close to Madara and whispered.

"What should we do? Should we wait for her for a while?"

"No need." Madara still looked calm and composed. "Since she has chosen to follow, she will definitely follow through to the end. If she can't even do this, she is not an Uchiha."

"Maybe she just wants to catch up and ask for directions..." Shen Yu thought secretly.

The two ran along the tree-lined path and soon entered a small town.

Shen Yu chose an izakaya, "Master Madara, let's take a break here for a while."

Spot nodded, and the two walked into the izakaya and chose a seat near the inner hall.

Shen Yu took the menu from the waiter and ordered several dishes with great enthusiasm, including ramen, sushi, stewed sea bream, chikuzen-ni, and a pot of hot sukiyaki.

He hasn't eaten anything since last night.

While waiting for the meal, Shenyu hesitated for a long time, took out two scrolls from his arms and handed them to Madara.

"Madara-sama, I picked this up yesterday in the secret room of the Hokage building. I don't know what it is, but the seal on it is a bit difficult to deal with."

Madara took the scroll, his fingertips glowing blue as he easily undid the seal.

"Spiritual Transformation Technique?" Madara scanned it for a few seconds and opened another scroll. "Is this... the Eight Gates of Ninjutsu?"

He glanced at Shen Yu with a slightly scrutinizing look, "They are all S-level forbidden techniques. You are quite good at picking them up, right?"

"Madara-sama, you know me."

Shen Yu straightened his back and said confidently, "If you don't take advantage of an opportunity, you're a bastard."

Fortunately, Madara didn't say much, but threw the scroll back to Shenyu.

"Now that I have it, there is no reason not to learn it."

"Um... Lord Madara, don't you want to practice for a while?" Shen Yu asked tentatively. He thought Madara would be interested in these forbidden techniques.

"I don't need it." Ban said calmly: "The book "Spiritual Transformation Technique" is very helpful for improving mental power. You can study it carefully. The strength of pupil power is directly linked to mental power, and the relationship between mental power and Yin Dun is inseparable..."

Shen Yu nodded, not quite understanding. He was born a rough man and had never received any professional guidance or training. All his fighting skills were based on instinct.

Even the ninjutsu he mastered were learned from his comrades.

In his vague understanding, he only knew that pupil power was the power released by the caster through the eyes, which was closely related to Yin Dun. For some pupil technique bloodstains, pupil power was the standard to measure whether a person's pupil technique was powerful or not.

The strength of Yin Dun is directly proportional to the mental strength.

Madara looked at his half-understanding, pondered for a moment, and asked: "Do you know what the nature of chakra is?"

"I know this question." Shen Yu responded: "Chakra is the product of the perfect fusion of a person's spiritual energy and physical energy. Spiritual energy represents the 'yin' attribute, and physical energy represents the 'yang' attribute. The different ratios of yin and yang derive the seven changes in the nature of chakra, which also corresponds to the fusion of yin and yang to derive the heaven and earth and all things."

"Not bad." Madara nodded with satisfaction.

Shen Yu smiled. These were all told to him by an old man who was cold on the battlefield but warm on the inside. However, this old man later died in the encirclement and suppression by the Senju clan. Thinking of this, his smile dimmed again.

Madara didn't seem to notice this, and continued, "Among the changes in the properties of chakra, wind, fire, water, earth, and lightning are the five basic attributes, while Yin escape and Yang escape are special properties."

Shen Yu was pulled back to his senses and asked, "Could it be that... spiritual energy is Yin escape? And physical energy is Yang escape?"

"Beginners are prone to fall into such misunderstandings." Ban shook his head and smiled. As the warm tea went down his stomach, he also became interested in chatting.

"Yin escape is a special chakra extracted from spiritual energy by fusing a part of the 'Yang' attribute. The same is true for Yang escape. Their special feature is that the ratio of Yin and Yang is innate, and it cannot be learned like the Five Elements escape."

He looked out the window, his voice drifting away, "If a person born with Yin Dun wants to gain the power of Yang Dun, he can only go against the will of heaven and change his fate..."

Shen Yu seemed to be deep in thought. Ban's words made him suddenly enlightened, as if the clouds had cleared away and the sky was revealed.

The external manifestations of the five elements of ninjutsu are easy to distinguish, but the techniques based on Yin and Yang ninjutsu seem to be... mostly secret ninjutsu.

For example, medical ninjutsu, the Akimichi clan's multiplication technique, the Senju clan's extraordinary strength, etc., these are related to the body and are mostly external manifestations of Yang escape;

Most of the things related to spirit belong to Yin Dun. For example, the secret technique of the Nara clan is to use Yin Dun to deform the shadow, the Yamanaka clan's mind transformation technique, the Byakugan and the Sharingan, etc., are all external manifestations of Yin Dun.

It can be said that spiritual energy is an important component of Yin Dun, and Yin Dun is even more a symbol of the strength of the pupil power.

Shen Yu's eyes brightened slightly, and the obscurity of the past was gradually being cleared up.