The day after Tsunade finalized the wartime reserve order, Kakashi came to the door.
He still had that lazy look, wearing a mask, with one Sharingan exposed slightly bent, holding a bag of fresh fruit in his hand, standing outside the courtyard gate, with a somewhat apologetic and polite tone. "Mr. Rinto, excuse me for interrupting, I am Kakashi Hatake, I have something to ask you for a favor."
Rinto in the room paused for a moment when he heard the name "Kakashi Hatake". He was not interested in Kakashi, but he was interested in his Obito, Sharingan, and Kamui's Space-Time Ninjutsu is very interesting. Before he designed the space blocking layer of the barrier, he referred to the residual spell data of Kamui obtained from Kakashi. The underlying logic of Space-Time Ninjutsu is an area that he has always wanted to dismantle in depth.
He raised his hand to remove the blockade of the courtyard door and said coldly, "Come in and say, don't beat around the bush, just tell me what you want to change."
Kakashi pushed the door open, put the fruit on the stone table at the entrance of the courtyard, walked to the door of the laboratory, did not barge in casually, stood at the door, and explained his purpose straight to the point.
"Mr. Rinto, I won't beat around the bush. You should have heard of my Kamui from Sharingan." Kakashi pointed to his left eye with a hint of helplessness in his tone, "Kamui's time and space ability is very practical, but there are two fatal problems: first, Chakra consumes a lot of money. Even simple penetration and transfer will consume a lot of Chakra, and the continuous combat capability is very poor; secondly, frequent use of Kamui will seriously damage the optic nerve and eyeballs. Even I cannot withstand high-frequency use for a long time, especially in wartime, and it is likely to cause problems because of this."
He has tried many methods before, trying to reduce the consumption of Kamui and alleviate the damage to his eyes, but they have no effect. People around him, whether it is Tsunade or Kai, are all interested in this kind of Dōjutsu The Z-type Space-Time Ninjutsu was powerless. Seeing Rinto come up with achievements that subverted cognition time and time again, and even Konoha could easily solve the problems that Konoha had faced for decades, he came to the door with the mentality of giving it a try.
"I know you don't like meaningless politeness, and I won't tell you false words." Kakashi's tone is very sincere, "I would like to ask you to help me design a plan that can reduce Kamui's Chakra consumption, while protecting the optic nerve and eyeballs and reducing damage caused by use. In exchange, I I can completely record all my understanding of Kamui, the complete release process of the technique, the changes in Chakra when using it, and even all the Kamui application scenarios that I can do, for your research. I can even cooperate with you in any tests that will not affect subsequent battles."
He is very clear about Rinto's logic. It is meaningless to ask White Fang for help and thanks. He must bring out the bargaining chip that the other party is interested in. And Kamui's unique and complete data of Space-Time Ninjutsu is absolutely very attractive to Rinto, who is obsessed with the study of Chakra rules.
Sure enough, Rinto raised his eyes and looked at him, his eyes fell on his left eye, and he said with a bit of seriousness, "Okay. But I need to do a test first to understand Kamui's Chakra circulation mechanism and damage mechanism to the optic nerve, so that I can design the corresponding structure. You cooperate with me in the test, and I will give you the corresponding plan."
"No problem! You can start at any time, and I will fully cooperate!" Kakashi agreed immediately, with a relieved expression on his face. He was originally afraid that Rinto would refuse directly, but he didn't expect the other party to agree so simply.
Rinto stood up and took him into the testing room next to the sterile operating room. There was a high-precision Chakra monitoring equipment he had built, as well as a scanning device for the eye structure, which could accurately capture the Chakra changes when Sharingan was activated and the damage to the optic nerve.
"Activate Sharingan, release Kamui once, just release it on the test target without moving large objects. I want to record the flow path and energy consumption details of Chakra throughout the process." Rinto ordered while debugging the equipment, with an unquestionable sense of command in his tone.
Kakashi nodded and immediately activated Sharingan in his left eye. The lines of three Tomoe lit up, and then the pattern of Mangekyō appeared. He aimed at the test target and released Kamui once. The space was slightly distorted, and a corner of the target was transferred to time and space.
During the entire process, the Rinto equipment ran at high speed, accurately recording every moment of Chakra changes: from the activation of Sharingan, to the construction of the Kamui surgery, to the opening of the time and space channels, the entire process of energy consumption, and even the subtle changes in the blood vessels and nerves inside the eyeball were completely captured.
"Let's do it a few more times to test the penetration blur, long-distance transfer, and high-frequency continuous release scenarios. For each scenario, I need complete monitoring data." Rinto looked at the jumping values on the screen and ordered without raising his head.
Kakashi did not hesitate at all, completely following the requirements of Rinto, releasing Kamui over and over again, testing different application scenarios, even if Chakra consumed Not a small thing, and not a word of complaint. He could feel that the monitoring equipment of Rinto accurately captured subtle changes that he himself was not aware of. This gentleman could really understand the underlying logic of Kamui.
For an entire hour, Rinto completed the monitoring of the entire scene and obtained the complete data released by Kamui. At the same time, he also conducted a comprehensive scan of Kakashi's left eye and clarified the specific mechanism of chronic damage to the optic nerve and retina caused by long-term use of Kamui.
He put down the operator in his hand, looked down at the massive recorded data, and quickly found the core of the problem.
There are two core reasons why the Chakra consumption of Kamui is so high: First, the construction efficiency of the spell is extremely low. Kakashi releases Kamui entirely by relying on the instinct of Sharingan. It has no control over the underlying logic of the time and space spell. A large number of Chakra are in the process of constructing the channel. The Chakra that is actually used to open the time and space channel only accounts for less than 30% of the total consumption; secondly, the Chakra of Kamui circulates completely inside the eyeball, and a large amount of Chakra fluctuates violently in a very small range, which will not only damage the optic nerve and retina, but also further aggravate the ineffective dissipation of energy.
The damage to the optic nerve is, on the one hand, due to the side effects of Mangekyō Sharingan itself, and more importantly, the high-frequency, high-intensity time and space Chakra fluctuations, which continuously impact and burn the optic nerve fibers. In the long run, it will cause irreversible vision loss and even blindness.
Once the root cause of the problem is clarified, the idea of the solution becomes clear. Rinto designed two sets of corresponding configurations for these two core problems instead of a single patch.
The first set is the Kamui spell optimization and Chakra consumption reduction configuration. Based on the monitored Kamui spell structure, he reconstructed the circulation path of Chakra, optimized the construction logic of the time and space channel, eliminated a large number of ineffective Chakra dissipation links, and improved the energy utilization efficiency of the spell. More than three times. At the same time, he made this optimized configuration into an anchor configuration that can be solidified in the Chakra cycle around Sharingan. When Kakashi releases Kamui, the configuration will automatically start, optimizing the construction of the spell, without his deliberate control, which can greatly reduce the consumption of Chakra.
The second set is the optic nerve and eyeball protection configuration. On the one hand, this set of configuration can form a microscopic protective barrier when Kamui is released, buffering the impact of time and space Chakra on the optic nerve and retina, avoiding burns and chronic damage; on the other hand, it can gently nourish the damaged optic nerve, repair previously accumulated chronic damage, and alleviate the side effects of Mangekyō Sharingan from the root.
More importantly, these two sets of configurations are tailored based on the Chakra characteristics of Kakashi and the status of Sharingan. They will not affect the ability of Kamui itself, and can even make the release of Kamui smoother and more stable, with faster virtualization and transfer speeds without any side effects.
Rinto was sitting in front of the experimental table, and the charcoal pen in his hand was quickly scratched on the stone slab. Lines of precise formulas, complete configuration drawings, Chakra anchoring methods, and rapid prototyping. Kakashi sat quietly next to him, not daring to disturb him. Seeing Rinto's focused look, I felt full of admiration. He had been studying Kamui for more than ten years, but he still didn't understand the underlying logic. Rinto only spent an hour of monitoring to find the root cause of the problem and even started to design a solution.
Two hours later, Rinto put down his pen and handed two slates recording the complete plan to Kakashi.
"Two complete sets of plans are here." Rinto said in a calm tone, "The first set is the optimized configuration of Kamui, with detailed Chakra anchoring methods. After solidification, it can reduce the cost by 70%. The above Chakra is consumed while improving the release efficiency of the surgery. The second set is a protective and repair configuration for the eyeball and optic nerve, which can not only provide protection when using Kamui, but also slowly repair the previous chronic damage."
He paused and added, "The anchoring steps and precautions are all clearly written, just follow them. If there is an adaptation problem, record the data and send it to me. Also, as you promised me, the complete technique data and application details of Kamui will be sorted and sent to me."
Kakashi quickly took the slate and looked down at it. The more he looked, the more shocked he became. The plan was so detailed that it was beyond imagination. Not only did it include complete configuration drawings, but also the anchoring method for each step, the precise parameters controlled by Chakra, and even possible problems and solutions., all written clearly. He originally only expected to reduce part of the consumption and alleviate eye damage, but he did not expect that Rinto directly provided a nearly perfect solution, which not only reduced consumption and protected eyes, but also optimized the release efficiency of Kamui.
"Thank you so much, Mr. Rinto!" Kakashi closed the slate and bowed deeply to Rinto, his tone full of heartfelt gratitude, "You have solved all the problems that troubled me. I have written down this favor after several years of problems. The complete data of Kamui you want will be sorted out and sent to you within today. If you need my cooperation in testing in the future, you can ask at any time and I will be on call."
Rinto did not answer his words and waved his hand, indicating that he could leave. His eyes had returned to the Kamui time and space data that had just been monitored. For him, Kakashi Making a plan was nothing more than an exchange of Kamui's complete data. What really interested him were the underlying rules of Space-Time Ninjutsu and the logic of how Chakra distorted and manipulated space.
Kakashi wisely stopped interrupting, hugged the slate, and retreated quietly. When he walked out of the courtyard, he couldn't help but look back at the lights in the laboratory, and the shock in his heart could not subside for a long time. With this plan, he finally no longer had to use Kamui in a constrained manner in the upcoming war, and he did not have to worry about running out of Chakra, nor did he have to worry about going blind.
In the laboratory, Rinto had completely forgotten the plan for Kakashi. He rolled out a new blank slate and began to deduce the underlying formula of the space-time technique. The Kamui data just monitored gave him a lot of new material, allowing him to further improve his understanding of the rules of space.