This ninja in Naruto is unscientific

Minato usually appears sunny, reliable, and capable of handling anything.

Whether it's negotiating across villages, fighting urgent battles, or dealing with piles of documents, he can accomplish it all with a smile on his face.

However, cultivating the Sage Mode is clearly not a problem that can be solved by simply smiling.

"Fukasaku Sennin."

Nishikawa Tetsu pointed to the black stick.

Give it to me.

Fukasaku blinked, then asked in confusion, "What do you need this for?"

"To monitor whether the water gates have become like frogs."

Fukasaku Sage thought that Konishikawa Tetsu was worried about him, and was inwardly admiring how good the two boys were. He said, "Don't worry, Konishikawa Tetsu, I'm here watching over you. When you were training in Sage Mode, I was watching you too."

"I know." Nishikawa Tetsu nodded, then said matter-of-factly, "But you'll soon be instructing me on how to cultivate the Two Lives Technique, and you'll also have to keep an eye on Minato. That's too much work."

Fukasaku thought about it and agreed. Besides, Nishikawa Tetsu had already achieved a perfect fusion of Sage Chakra and knew when to stop absorbing natural energy, as well as at what stage of frogification he had to immediately stop.

Having him watch over the young Shuimen, who is just starting out, is definitely more convenient than me instructing the two of them while observing them back and forth.

So, the hermit Fukasaku handed over the black stick.

"Then it's up to you."

Nishikawa Tetsu took the black stick, weighed it in his hand. The stick, which seemed quite long in Fukasaku's hands, was only the size of a ruler in his hands and didn't weigh much.

"Don't worry, I will definitely supervise Minato's training carefully."

Minato heard their conversation and slowly opened his eyes.

"Che, are you here to practice immortal arts today too?"

"right."

Nishikawa Tetsu walked to the side of the water gate and twirled the black stick in his palm.

"Today I will learn the Immortal Technique: The Art of Two Lives."

"The art of two lives?"

Minato certainly knew about this technique; they had discussed it before.

That was a Sage Art that Jiraiya used in actual combat. By summoning the two Sages Fukasaku and Shima, he had them stay on the caster's left and right shoulders respectively, continuously absorbing natural energy and converting it into stable Sage Chakra.

"Didn't you say that the preparation time for the Twin Life Technique is too long, and the margin for error in actual combat is very low?"

Minato asked in confusion, "Che had previously mentioned that two immortals might not be enough in the future."

"yes."

Nishikawa Tetsu nodded.

"But just because it doesn't work well doesn't mean it's not worth studying. I want to personally experience what it feels like to have two immortals hanging on my shoulders at the same time, and also record the efficiency of natural energy input. Besides, I've already assigned tasks related to the topic of natural energy."

"Hanging it on my shoulder..."

Minato's lips twitched slightly.

He suddenly realized that Che's understanding of immortal techniques might be slightly different from that of the immortals like Shen Zuo. After all, those were immortal techniques, how could they be discussed so casually?

"Don't look at me like that," Nishikawa Tetsu said. "This is a rigorous scientific description."

"I didn't say anything."

"But your eyes have already said it all."

Minato smiled helplessly and closed his eyes again.

"Then I'll continue to feel the energy of nature."

"Go, go."

Nishikawa Tetsu stepped aside, unable to suppress the smile on his face, and muttered to himself, "Opportunities to openly and fairly attack Minato are rare."

"Che, I heard you."

"You misheard me, I said supervision."

"My hearing is excellent; you clearly said 'hit' just now."

"It's normal for necessary physical corrections to occur during the monitoring process, so don't worry."

The hermit Fukasaku sat beside them, listening to their conversation, his wrinkles crinkling into a smile.

"Minato, you'd better watch out. Natural energy isn't so easy to absorb."

"Compared to natural energy, I think what I really need to be wary of is Tetsu." Minato glanced at Nishikawa Tetsu.

Upon seeing this, Nishikawa Tetsu immediately raised the black stick and looked at Minato with a smile: "The fact that you still have the mood to argue shows that you haven't been training seriously enough."

Minato closed his mouth and began absorbing natural energy again.

This time, he was more focused than before, carefully and cautiously sensing the natural energy.

However, natural energy does not become exceptionally gentle just because people are serious about it.

Once the invisible energy enters the body, it immediately begins to slowly spread along the meridians.

Minato diligently followed the method previously explained by Fukasaku to maintain a balance between natural energy, physical energy, and spiritual energy.

Light green lines spread from his cheeks toward his ears.

Nishikawa Tetsu stood to the side, his expression gradually becoming serious, showing signs of turning into a frog.

"The natural energy input is a bit too fast," he reminded him from the side.

"I know," Minato said through gritted teeth.

"Your body's energy can't keep up."

"I'm making adjustments."

"The fluctuations in mental energy are also quite large."

"Che, could you please stop reporting data for a moment?"

"I'm doing this to help you get into the zone."

"What you said makes me even more nervous."

"Tension increases fluctuations in mental energy."

"Then you should pause for a moment."

As soon as Minato finished speaking, the frog-like markings on his cheeks suddenly spread forward.

Nishikawa Tetsu's eyes lit up instantly, and he raised the black stick.

"An anomaly detected."

"Wait a minute, I can still—"

"Snapped!"

The black stick struck Shuimen squarely on the forehead.

The natural energy that had just gathered in Minato's body was immediately dispersed, and his physical and mental energy returned to a stable state. The frog-like markings on his face also quickly faded away.

Minato opened his eyes, covered his forehead, and looked at Nishikawa Tetsu in disbelief.

"Che, you were way too fast just now!"

"Safety oversight must be decisive; I'm worried about you."

"Thank you for your concern, but I was almost done adjusting just now."

"But you didn't adjust it properly."

That's because you kept talking next to me.

"How can you blame me for this?"

"If not you, then who is to blame?"

Minato pointed to his forehead and accused, "I just told you to shut up, and you attacked me."

"This indicates that your emotions are fluctuating too much."

Nishikawa Tetsu analyzed seriously: "Once you enter the battle, the enemy won't just stand by and wait for you because you think you're almost ready."

Minato opened his mouth, and surprisingly found some truth in what he said. He shook his head and retorted, "Then you can't turn supervision into revenge."

"There's no retaliation involved. I was simply handling official business."

You were laughing very happily just now.

"Because you found a problem during your first supervision, it means you still have room for improvement. I'm happy for you, Minato."

The sage next to him had a big smile on his face; the two children really got along well.

"Minato, it's quite normal for you to develop a frog-like form during training."

"But he was hitting it so smoothly, it was almost like he was doing it on purpose."

Minato rubbed his forehead and muttered something under his breath.

Nishikawa Tetsu immediately held the black stick horizontally in front of his chest.

"What did you say?"

"It's nothing."

Nishikawa Tetsu nodded in satisfaction: "It's alright, Minato, don't worry about absorbing it, I'll keep a close eye on you."