Konoha: The Absolute Justice of the Uchiha.

Chapter 405 Artificially Manufactured Chakra Core

Kai cannot use the Eight Gates Formation, but he can control the frequency of his punches using the rhythm of his breathing training, bringing the impact frequency of his punches close to 7.3 Hz, triggering resonance at the moment of contact.

Tenten's shuriken handles multi-point resonance on the periphery, Neji's empty palm strikes suppress vibrations at mid-range, and Guy's close-range punches deliver core resonance strikes.

He pushed the three pieces to three different positions on the nautical chart, and then drew a triangle between the three positions with his finger.

"When three people simultaneously launch an attack at a frequency of 7.3 Hz, a resonant coupling effect will occur between the fragments."

The physical principle behind this effect is similar to the effect of three tuning forks vibrating simultaneously, causing the sound waves in the air to overlap and amplify at the point of intersection.

If three resonant sources form a triangular array around the target, the center of the target will receive resonant energy three times the amplitude.

This energy does not need to come from chakra—it comes from the superposition of pure mechanical vibrations.

In other words, even without using chakra, I can still command this battle by adjusting the attack frequency of the three of you.

Tsunade leaned back in her chair, her right fingers slowly tapping on the table.

She knocked for about ten seconds. During those ten seconds, the sound of rain and thunder outside the window alternated twice. The air inside the room was tense, and everyone was waiting for her decision.

"Your plan has several key prerequisites." Tsunade stopped pointing and looked at Izumi. "First, the chakra waveform of that Jinchuriki must be consistent with the main root of the Divine Tree, otherwise the resonance will be ineffective."

Secondly, Guy, Neji, and Tenten must be able to precisely control their attack frequency in actual combat, with an error of no more than a fraction of a hertz. This is not a training ground; it is a real combat environment where they are facing a Tailed Beast-level enemy. Maintaining frequency control while their heart rate is 160 and their adrenaline is soaring is extremely difficult.

Third, you yourself must command from the core area of ​​the battlefield—you cannot use chakra, which means you are the most vulnerable link on the battlefield.

"The first one can be verified after we arrive at the island," Chi Quan said. "The Hidden Mist Dark Division has detected two chakra bursts and left waveform data."

Before setting off, we compared their data with the waveform of the main root of the sacred tree. If they matched, we implemented the resonance scheme; otherwise, we made other plans.

The second training program, which focused on controlling Yikai's breathing rate, has been running for three weeks. He can now control his breathing rhythm down to the second.

Neji's chakra flow is a fundamental skill of Gentle Fist, and his precise control over chakra frequency is a talent of the Hyuga clan.

Tenten's precision in controlling ninja tools has already been proven in Pheasant Valley—when she simultaneously controlled twelve shuriken in the bamboo forest, the rotation speed and trajectory of each one were different.

All three have a foundation in precise control; they only need targeted joint training before the battle.

He paused, then picked up the last piece from the velvet.

This piece was a bit larger than the others, shaped like an irregular rhombus with a natural curve at the edge, just right to fit into the handle of something.

"As for the third point—" Chi Quan weighed the fragment in his hand, "When I was at the bottom of the Pheasant Feather Valley pit facing the main root of the divine tree, the distance between me and the main root was zero."

Even though we were in the heart of the battlefield, at least we were separated by an attack array.

Moreover, my task is not to fight—it is to observe, calculate, and correct the frequency deviations of the three of you.

This job doesn't require chakra; it requires eyes and a brain.

My eyes and brain are still intact.

Kai had been standing next to the pool since he entered the office. The rain had dried on his body, leaving patches of varying depths of wetness on his tight-fitting clothes.

He heard Chi Quan finish speaking his last sentence, then take half a step forward and say something in a very low voice, so low that only Chi Quan could hear it amidst the thunder and rain.

"Are you sure your eyes and brain are still functioning—I mean, with the side effects of the neurostimulants not yet fully subsided—that your reaction time and judgment are up to the standards of battlefield command?"

Chi Quan turned his head and looked at Kai.

His cane was leaning against the desk; he didn't pick it up.

His right leg supported his body weight, and he stood very steadily—more steadily than any day three weeks ago.

"Three days ago, I helped a twelve-year-old genin adjust the angle of his shuriken throw on the street," Izumi said, his voice as low as Kai's. "When he throws, his shoulders rotate inward involuntarily, causing the shuriken to deflect in the air."

I noticed the problem the moment he threw it, and stopped him before the shuriken flew out, adjusting the angle of his wrist.

His hand speed is 40 meters per second, and my reaction time is about 0.03 seconds.

That night, I went home and did a neurological reaction speed test on myself at my desk—my average reaction time was 0.036 seconds, 0.004 seconds slower than before the injury, but still within the normal range.

Kai looked into his eyes.

Chi Quan neither dodged nor made a deliberate attempt to meet her gaze.

His eyes, behind his glasses, were consistently calm—not a calm devoid of any ripples, but a calm in which the ripples had already been incorporated into his calculations.

"Give me a complete neurological evaluation before you leave," Kay said. "I'll only believe you if you sign it."

"Can."

Tsunade stood up from behind her desk and walked to the window.

Her silhouette appeared wide against the backdrop of the rain—not in terms of physical width, but in the width of someone carrying something.

She looked at the ginkgo tree outside the window, which was being battered by the rain and was leaning to one side. She stared for about ten seconds, then turned away.

"How long will it take you to prepare?"

"Three days," Chi Quan said. "On the first day, we embedded the fragments into the ninja tools and performed individual frequency calibration."

The three practiced the resonance array together the next day.

On the third day, preparations for departure were made—including my neurological assessment and a follow-up check on Kai's rib healing.

We set off on the morning of the fourth day.

Tsunade returned to her desk, picked up the stamp, and stamped it on the mission authorization form.

The sound of the seal striking the paper was deep, blending with the thunder outside the window, making it impossible to distinguish one from the other.

"Kaiban is back on mission status starting today."

Mission level – S.

The first objective is to travel to an unnamed island in the eastern waters of the Land of Water and, in conjunction with the Hidden Mist Dark Guard, eliminate the suspected Jinchūriki of the Divine Tree on the island.

Mission Commander: Kai; Battlefield Technical Commander: Chi Quan.

Departure date – four days from now.

She pushed the mission authorization letter off the table.

Kai reached out and caught it; the paper of the permit still carried the warmth of the Hokage's seal. He folded it in half and put it into the inner pocket of his bodysuit.

"There's one more thing," Tsunade said as they turned to leave.

The four of them turned around and saw Tsunade standing by the window, the reflection of the rain casting a constantly shifting pattern of light and shadow on her face.

"Kabuto," Tsunade said, "If you encounter Kabuto himself on the island—do not chase after him."

Kabuto can die somewhere else, but don't go and fight him before the four of you have fully recovered.

When I brought the four of you back from Pheasant Feather Valley, I promised your families that I would never let anything like this happen to you again.

Especially you, Ikezumi—you are a medical ninja I personally brought out from Konoha Hospital.

If you inject yourself with another nerve stimulant, I'll permanently revoke your prescription privileges.

Chi Quan stood at the doorway, his cane resting on the floor, and his lips moved slightly.

"A promise," he said. "This mission will not use any neurostimulants."

My nervous system can't handle a second time.

Tsunade waved them out.

The four people walked out of the office one after another. As the door closed behind them, Tsunade stood alone by the window, took out her sixth cigarette from the pack, twirled it between her fingers twice, and then didn't light it.

She looked down at the nautical chart on the table. The unnamed island circled in red looked small and inconspicuous in the shadow of the rain, like a dried chili seed forgotten on a pale blue tablecloth.

In the corridor, four people were walking towards the stairwell.

Walking at the front every day, she had already wrapped the fragment that Chi Quan had given her with bandages and put it into her ninja tool bag.

Neji walked behind Tenten, his mind already working out a frequency control scheme for the Eight Trigrams Palm technique—

The speed of chakra flow can be regulated by the rhythm of meridian contraction. If chakra is released in a pulse rather than a continuous flow at the moment of striking, the frequency can theoretically be locked at 7.3 Hz.

Kai and Chi Quan walked side by side at the very back. Neither of them walked very fast. Kai's ribs ached slightly as he walked, while Chi Quan's cane tapped out a steady rhythm on the concrete floor of the corridor.

"You just said you helped a genin three days ago," Kai suddenly said.

"Um."

"You did my rehabilitation at my house at nine o'clock that morning and it ended at ten o'clock."

Then you go to the hospital to have Neji undergo a meridian imaging procedure, which ends at noon.

This afternoon you said you were going to Mrs. Yamaguchi's flower shop to have your clivia checked, and then to help Aunt Tanaka fix the leaky kitchen faucet.

All these things added up—" Kai mentally calculated the time, "the matter of you helping that genin adjust his shuriken should have taken place between four and five in the afternoon."

Where were you during that time period?

Chi Quan tapped his cane four times on the cement ground, without changing the rhythm.

"The training ground," he said. "Mrs. Yamaguchi's clivia check-up only took fifteen minutes, and Aunt Tanaka's faucet needed a new washer. After I bought the washer at the hardware store, I passed by the training ground and saw that genin practicing alone in the corner."

He wasn't being instructed by anyone; he practiced alone for a long time. Kunai and shuriken were scattered all over the ground, and the targets were all misaligned.

I stood by the training field for about a minute, watching his movements, then went over and adjusted it for him.

"You just happened to be passing by the training grounds and stood there for a minute watching a genin you didn't even know practice?"

"His shuriken deflected at too large an angle," Chi Quan said, his tone as calm as if he were describing experimental data. "The densest point of impact on the target was nearly 20 centimeters off the bullseye."

If this deviation isn't corrected, he'll kill himself in the next combat mission because he can't throw his ninja tools accurately.

Kai didn't ask any more questions.

At the end of the corridor is the stairwell, where rainwater seeps in through the windows, soaking the steps.

As the four people walked down the stairs, Tian Tian, ​​who was walking in front, suddenly stopped, turned around, and faced the three people behind her.

"Have you ever thought about something?" Tian Tian's voice echoed in the stairwell, half of it drowned out by the sound of rain. "When we were in Chiyu Valley, we found his laboratory on the fourth basement floor and saw his experimental records."

The records mentioned the "container project," but all the experiment dates were from six months ago.

Has he done nothing in the past six months? The more than three hundred white birds we encountered in the bamboo forest did not appear overnight—they were cultivated by Dou under the bamboo forest over several months.

If Kabuto could cultivate the White Zetsu army in the bamboo forest while continuing his cultivation of the Divine Tree in the underground laboratory of Chiba Valley, then he could simultaneously conduct another experiment elsewhere—one he had been preparing for even longer.

An even deeper experiment—what's impossible?

"What are you doubting?" Neji asked.

"I'm not doubting it." Tenten unzipped her ninja tool bag, revealing the black fragment inside. "I'm thinking that when Ichikabuki was in Chiba Valley, he probably wasn't afraid of us discovering his underground facilities at all."

Because Chiba Valley is not his trump card.

His trump card lies in the Land of Water.

Pheasant Valley is a smokescreen; it's something he's using to stall us.

His true container plan was never in Chiba Valley from the beginning.

The stairwell fell silent.

Rainwater streamed in through the window, splashing onto the steps closest to the window and creating tiny droplets.

"The size of the laboratory in Chiyu Valley is indeed too small for a madman who is pursuing the creation of a Tailed Beast-level vessel," Izumi Chi said, breaking the silence.

He tapped his cane on the steps, the sound echoing briefly in the stairwell like a coin falling onto the concrete floor. "We only saw sixteen culture tanks underground in Pheasant Valley."

Sixteen culture tanks are needed to simultaneously conduct rejection tests for *Spirit Tree* cell transplantation, and to carry out mass cultivation of *White Tree* cells.

Chakra field construction experiment - not enough space.

Kabuto has been in Pheasant Valley for so long, it's impossible that he didn't expand his experimental space.

If he has an even larger facility in the Land of Water, then the destruction of Pheasant Valley by us would be of no use to him.

"It was just the loss of an outpost," Kai continued.

Four people stood in the stairwell, the sound of rain pouring in from outside the window, carrying the unique coolness and earthy smell of autumn rain.

Chi Quan switched his cane to his right hand, and reached into the inner pocket of his white coat with his left hand to feel the black velvet bag—

There were eight fragments left in the bag. Each fragment was small, but together they were enough to embed three shuriken, two kunai, and a point of attachment for palm strikes.

"We'll be setting off in three days," Izumi said. "In these three days, we need to figure out one thing—if the container on the island really wasn't made based on any of the nine tailed beasts, then what did Kabuto use to replace the tailed beasts?"

An artificial container requires an artificially manufactured chakra core—what are the raw materials of this core, what is its structure, and what are its weaknesses?