Yin Seal

These techniques are inherently top-tier medical ninjutsu, requiring the user to gather or release massive amounts of chakra within the relatively fragile meridian system of the human body all at once. They demand mastery at the level of an ultimate art, not only regarding the user's precise chakra control and understanding of human physiology, but also requiring long periods of arduous training to truly grasp.

Otherwise, the slightest carelessness would result in severe damage to the user's own body.

However, Nagato is by no means a normal person. His level of chakra control and understanding of his own meridians is exceptionally prominent, fully meeting the requirements for using the Yin Seal. Coupled with the fact that his Sage Body is far sturdier than that of an ordinary person, the result is that he can use the Yin Seal directly even without having actually mastered it.

This situation is like others using the Yin Seal Release while speeding on a narrow, winding mountain path along a cliff. Not only must they have a high-performance vehicle, but they also need superb driving skills; only after becoming truly familiar with the road conditions and undergoing long-term training can they ensure they won't crash and die while speeding.

As for Nagato? Sorry, he is speeding on an empty highway. As long as he can get the car moving, he can speed however he likes. Not only is the road straight, but it was also paved by him just a short while ago, so there is no need for training at all.

Of course, his level is actually no different from a road hazard, and he cannot be mentioned in the same breath as an old-school mountain driver like Tsunade.

The specific difference lies in the fact that Tsunade, who has truly mastered these ninjutsu, can not only use the Strength of a Hundred Technique on herself but also apply it to others to help them heal and recover chakra. Nagato, however, cannot. If he were to use the Strength of a Hundred Technique with his road-hazard methods to restore someone else's chakra, it would be no different from murder; he would shatter the other person's meridians into pieces one hundred percent of the time.

"Not bad, it's not that difficult of a technique." Nagato coughed lightly, his expression calm and indifferent. Completely failing to realize his nature as a road hazard, he answered while attempting to store chakra in his forehead.

Honestly, he feels that sealing techniques and the like are just too simple. His Uzumaki Clan is inherently extremely adept at sealing techniques, and he possesses the Uzumaki Clan's Sage Body. Learning the Yin Seal in seconds—which was likely developed by the Uzumaki Clan—is merely a level that doesn't bring shame to his Sage Body.

Look at the performance of the Senju clan's Sage Body? Hashirama Senju didn't even bother to learn something like the Yin Seal, okay? What is the experience of lacking chakra? He simply couldn't understand it. Hashirama stated that he had never lacked chakra in his entire life and had no idea what use a technique like the Yin Seal could have; he'd rather spend that time playing a few more rounds of gambling.

Seeing Nagato learn an S-rank forbidden technique in seconds and still maintain such a relaxed, indifferent, and unconcerned expression, Konan couldn't help but feel that, unknowingly, this companion's stature had risen quite a bit.

Tsunade, on the other hand, stared blankly at the green mark on Nagato's forehead, then looked at his bright red hair, saying nothing. The expression on her face, combined with the mountain of dirty bowls and plates piled up in front of her, made her look foolish, as if she were stuffed from overeating.

Hinata didn't care at all about what had appeared on the red-haired man's forehead; she just lowered her head, looking bitter as she pondered her troubles. She had not only lost her Byakugan but had also had her training methods for the Gentle Fist stolen. The Hyuga Clan had never suffered such a massive loss in a thousand years. She couldn't even imagine what the reaction of the Hyuga Clan would be if they found out about this result; wouldn't they be so angry that they would collectively jump back and forth in a frenzy?

For a moment, these two "gods of gluttony" from Konoha were both somewhat silent.

"To learn these techniques, I might need a long time." Konan gently closed her eyes, speaking to Nagato while deep in thought.

This long duration was enough for Konan to finish reading all the data in the memory and fully understand the practical significance of these techniques. She also understood why Nagato had copied the memories of these techniques to her, because these techniques were all too powerful.

Even the Strength of a Hundred, which is relatively the simplest technique—requiring only precise chakra control to use—possesses immense destructive power and potential for improvement; learning it is not an easy matter.

As for techniques like the Yin Seal, which stores a large amount of unused chakra in the forehead, practicing it is even more difficult. The subsequent Strength of a Hundred Technique, which releases the massive amount of long-term accumulated chakra using the Yin Seal Release, and the Creation Rebirth, which can instantly heal even internal organ damage under the influence of vast chakra, are truly high-specification, ultimate-level ninjutsu.

Medical ninjutsu is inherently one of the most difficult types of ninjutsu to practice, and these techniques push the attainments that medical ninjutsu can reach to the extreme; the difficulty of practice and the effectiveness of the techniques are self-evident.

An ordinary ninja, as long as they learned these techniques, would probably possess strength approaching the Kage level, to say nothing of this Lady Tsunade. Konan knew very clearly that this woman was the veritable Princess of Konoha, possessing the most orthodox Senju bloodline.

"It seems this Fifth Hokage is not just capable of eating," Konan couldn't help but think, looking at Tsunade with a gaze that even held some reverence, feeling that she was indeed worthy of being one of the Sannin.

Just from the difficulty of the techniques Tsunade had mastered, Konan could see how formidable her strength was; under normal circumstances, she should not fear any challenger. If she hadn't run into Nagato, it would have been impossible for her to appear so powerless.

There was no helping it; the so-called Kage-level powerhouses of this world, originally defined as the "strongest," all faced a death sentence if they encountered Nagato. Other Kage would not perform much better than Tsunade when facing Nagato, and might even be more pathetic.

This is a double suppression of ability and strength. Unless one can activate a "bloodline cheat," one wouldn't even have the power to fight back when encountering Nagato, who has one foot stepped into the Six Paths level.

"Leader, do you need me to go remind Kisame and Sasuke to speed up?" White Zetsu asked from the side, its face looking somewhat ugly.

It knew very well what kind of technique the Yin Seal was. Seeing Nagato master a technique of this level so easily right before its eyes, White Zetsu even began to doubt reality.

Is this still a human? Although Nagato was indeed the one chosen by Madara Uchiha to inherit his Rinnegan ocular power, and it had never underestimated Nagato's talent and potential, the talent he was displaying at this moment still exceeded White Zetsu's imagination.

In this way, the Five Kage Summit would be no problem at all; with Nagato's strength, he could resolve it easily. And wanting to use Nagato to resurrect Lord Madara would be even more difficult. White Zetsu was anxious to tell Obito the latest intelligence so he could prepare early.

Chakra volume is fundamentally the basis of everything. No matter what technique a ninja uses, they must consume chakra; even the Eight Inner Gates requires the use of chakra. After Nagato learned the Yin Seal, the amount of chakra he could use in battle could be said to have increased exponentially. If great gods like Madara Uchiha and Hashirama Senju were not resurrected, White Zetsu could no longer imagine who in this world could be his opponent.

Why is Hashirama Senju the God of Shinobi? Because his chakra volume is too vast. Ordinary ninjas would be exhausted to the point of collapsing after trading blows with him a few times, yet his chakra volume would still be full; it was consumed slower than it was recovered. Aside from that stubborn fool Madara Uchiha, who would have any interest in fighting him?

Why does Naruto Uzumaki only know Shadow Clone and Rasengan, yet he can always defeat people? Because there is a tsundere little fox secretly channeling chakra to him. If one Rasengan can't kill them, he just makes a few more; if he splits into dozens of Shadow Clones at once, there's always one Rasengan lucky enough to hit someone in the face.

So at this moment, White Zetsu was a bit numb, wanting to rush to ask Obito what to do about the current Nagato. This red-haired guy's chakra volume was already terrifyingly large, and he actually had the nerve to learn something like the Yin Seal—it was just too shameless. If it had known this would be the result, it should have secretly killed Tsunade in advance; this old woman was nothing but a disaster.