Naruto: Neurolink Transmigration

"Good question, but I'm not in your position, so I don't know." I replied with a playful smile.

"Hmph, you little shit, be serious. Alright then, how about this—if you answer, I'll grant you one request." My grandfather said while taking a drag from his cigarette.

"Well, in that case, I guess I'll help answer…"

"How about accusing those people of being spies?"

"? Spies my ass, they're Root! Danzo's subordinates, village elders' lackeys, and the Hokage's assistant!" I hadn't even finished my sentence when my grandfather got angry.

"Exactly! That's why we can accuse them of being spies… After all, unlike Anbu, they aren't officially registered as Konoha citizens or shinobi." I answered calmly.

Well, I was calm, but my grandfather wasn't…

"And if we arrest them as spies, what if that bastard Danzo questions Hiruzen about it, idiot?!"

"Gramps, did you forget why we had a problem in the first place?" I asked with a casual smile.

My grandfather suddenly went silent, deep in thought.

After a moment, he nodded.

"Hmm… That's true. We're providing clear evidence to the villagers for their arrest, accusations, and everything. So even if Danzo wants to claim them as his men… Unless he officially registers them as citizens, he can't interfere with this matter… Even if his subordinates die… Hmm."

"Ehm, yeah, that's pretty much it. But a small reminder—don't kill all of them." I nodded casually while leaning back in my chair. And… that cold aura… it was slowly fading, getting lighter…

"Yeah, I got it, you little shit! Now… what do you want for your request?"

"Likewise. As for my request, I want two Tantō with at least 60% of the blade made from chakra metal."

"You little monkey, do you even know how expensive that is?! One of those alone costs 1–1.5 million ryo! And you want two!?"

"Ohh! So that promise earlier was just empty wor—"

"Fine, damn it, fine! Wait a week, and they'll be delivered to you! By the way, when you enter the academy, don't embarrass me, Setsuna Uchiha!"

"Tch, relax, Gramps, relax. Not only can I be the number one student in class, I could even graduate in a single day!" I replied playfully.

"Graduate in a day? Try it! If you can do that, I'll give you 5 million ryo!"

"Alright then, Gramps, I'm heading home to train." I answered casually.

Well… in theory, I could graduate in a day… According to Neu, my chakra level is already at chunin-tier. I just need to learn the three basic ninjutsu and improve my actual combat skills! Well, even that problem is already solved with dream simulations!

Upon returning home, I created three shadow clones. These clones weren't meant for studying per se, but rather for reading and photographing books or ninjutsu scrolls—everything else would be stored by Neu…

How convenient!

After that, I continued my training by striking the training dummy…... By The way...

Neu, between taijutsu in this world and martial arts in my previous world, which one is better?

---If we're talking about pure physical combat, without chakra, Earth's martial arts are more effective. Since humans on Earth are physically weaker and lack chakra, they must be more lethal in every strike and more precise in their intercepts…

Hmm… Then in your opinion, what's the strongest martial art?

---All of them have weaknesses, but I can create a new style by combining Uchiha Interceptor Style + Krav Maga + Lethwei + Systema + Silat + Jeet Kune Do into one martial art.

Good, just make it. By the way, why did you choose those? Explain their strengths.

---Uchiha Interceptor Style is the Uchiha clan's signature fighting style, relying on the Sharingan to read an opponent's movements in milliseconds. This technique focuses on highly precise counterattacks, where the user doesn't need to attack first but instead waits for an opening and retaliates with maximum speed and accuracy. With a combination of fast reflexes and minimal movement, the Uchiha Interceptor Style is extremely difficult to counter in one-on-one combat, especially against opponents who rely purely on speed without tactical thinking. Its weakness, however, is that it heavily depends on the Sharingan—without the dojutsu, its effectiveness drops significantly.

---Developed by the Israeli military, Krav Maga is a martial art with no rules, designed to kill or disable an opponent as quickly as possible. Krav Maga prioritizes maximum efficiency, targeting vital points such as the eyes, throat, groin, and joints. It combines brutal strikes, grappling, and evasive maneuvers to ensure victory within seconds. Unlike other martial arts that emphasize aesthetics or sportsmanship, Krav Maga is purely about survival—even if that means gouging out an eye or breaking an opponent's bones.

---Known as the "Father of Muay Thai," Lethwei is a martial art from Myanmar that is even more brutal, allowing headbutts as weapons. With the concept of "The Art of 9 Limbs," Lethwei fighters use their fists, elbows, knees, feet, and head to strike their opponents, making it one of the most aggressive and deadly fighting styles. Unlike modern Muay Thai, which uses gloves, Lethwei fighters compete bare-knuckle or with only hand wraps, increasing the impact of their punches. Additionally, Lethwei training develops extreme endurance, allowing fighters to keep going even after taking severe damage.

---Systema is a secret martial art developed by the Russian special forces (Spetsnaz), designed for close-quarters combat in various situations, including facing knives, firearms, or sudden attacks. What makes Systema unique is its fluidity and use of an opponent's energy against them—similar to Aikido but with a more brutal approach. Systema doesn't have fixed movements; instead, it relies on improvisation, breath control, and muscle relaxation to remain calm in deadly situations. Its techniques teach how to incapacitate an opponent with minimal effort but maximum results, making it unpredictable and highly effective in no-rules combat.

---Silat is a traditional martial art from Kalimantan, Indonesia, known for its fluid movements, body manipulation techniques, and weapon use. Unlike many martial arts that focus on raw strength, Silat emphasizes speed, agility, and deception to defeat opponents—often with movements that look like a dance but have lethal potential. One of Silat's strengths is its adaptability against multiple opponents, as it involves fast strikes, brutal takedowns, and evasive maneuvers that are hard to predict. Some Silat styles also teach the use of kris, golok, or karambit, making it one of the most versatile martial arts in the world.

---Created by Bruce Lee, Jeet Kune Do (JKD) is a martial art that rejects rigid rules and focuses on speed, adaptation, and effectiveness in combat. Its core philosophy is "absorb what is useful, discard what is not," allowing fighters to blend techniques from various martial arts without being bound by strict guidelines. JKD emphasizes instant reactions to an opponent's attack with the most efficient movements possible, similar to Kakashi's or the Uchiha Interceptor Style in the Naruto world. In addition to strikes and kicks, JKD also incorporates grappling, joint locks, and evasive techniques, making it one of the most versatile and unpredictable fighting styles.

---Well, statistically, Silat, JKD, and the others are the deadliest yet remain highly adaptive. Combined with Uchiha Interceptor Style and Sharingan, it makes everything more fluid and lethally focused.