The Three Tomoe Sharingan, the peak of the standard Uchiha bloodline, possesses greatly enhanced insight, resistance to genjutsu, improved ninjutsu copying, and illusion casting.
It also meets the minimum requirement for using the Uchiha forbidden jutsu: Izanagi.
Yes, the same technique Danzo Shimura used like a resurrection coin.
Of course, Uchiha Kei wasn't planning to use his Three Tomoe Sharingan that way. In fact, he probably wouldn't even use those eyes in battle.
Their main purpose was to assist with developing new features in his spiritual network.
First up: the illusion abilities inherent to the Three Tomoe Sharingan.
Among the Uchiha, genjutsu potency varied. On one end, you had prodigies like Shisui Uchiha and Itachi Uchiha who elevated genjutsu to an artform. On the other, pre-Mangekyō Sasuke Uchiha, whose genjutsu served mostly as light support in battle.
Kei's genjutsu wasn't on Shisui or Itachi's level, but it was definitely stronger than Sasuke's—placing him squarely in the average range for Uchiha, maintaining his "mediocre" persona.
However, with genjutsu tied to game functions, Uchiha Kei could now do what Minato Namikaze once theorized: forcefully apply an inescapable genjutsu to his targets.
It didn't work on everyone, but for those below Jōnin-level, it was practically foolproof. Just one look and they'd be trapped. Against Jōnin, they could resist just enough to break the illusion before it fully activated.
In a way, Kei's genjutsu was now a power gauge—useless against the strong, but lethal to the weak.
That was the most significant combat enhancement his Three Tomoe Sharingan provided.
It also boosted his mental strength, expanding the soul-capacity of his spiritual network. More people could now access the spiritual network at once.
As the "root server" of the network, Kei's coverage range doubled—from a 10-kilometer to a 20-kilometer radius. That now included not just the Hidden Leaf Village but much of the surrounding area.
What? Only double?
You misunderstand. The key factor in the network range isn't the Sharingan—it's Kei himself. It's the fusion of his own spiritual power and his mastery of the network, enhanced by the unique effects of the Sharingan.
For a single Sharingan upgrade to yield such a leap in range was already absurd—it showcased just how powerful the Three Tomoe Sharingan truly was.
Increased stamina for game development and longer-lasting genjutsu games were just side perks. Right now, Uchiha Kei felt absurdly powerful—he was practically a god-tier support unit.
He was now a Jōnin in every sense. Even if his raw combat skills weren't elite, he could already take on average Jōnin. He just wouldn't stand much chance against elite Jōnin.
But if he unleashed the chakra gifted by the Nine Tails, Uchiha Kei felt he could challenge even Kage-level fighters. He might even win against the weaker ones.
Of course, Kei wasn't someone who liked fighting. These were trump cards—reserved for emergencies only.
For now, he continued researching the Three Tomoe's potential. There was still so much to uncover.
He planned to spend the night testing new functions.
But first, he made another trip into the spiritual network world to meet with the Nine Tails and offer thanks.
The big fox let out a proud snort, pretending it was no big deal. Just mutual benefit, nothing more.
Typical tsundere.
Still, for a Tailed Beast still sealed within a jinchūriki, transmitting chakra via spiritual network was a big deal.
Even in the original story, when Naruto distributed Nine Tails chakra to others, he acted as the medium—and that was after he and the Nine Tails had synced.
Kei, by contrast, was receiving chakra remotely, without such a connection. The technical difficulty was immense.
As for reaching Naruto-level cooperation?
Kei knew he could never achieve that. Naruto and the Nine Tails shared memories. That was something Kei would never do.
It wasn't a matter of trust—it was his nature. Unless he reached Ōtsutsuki-level power and felt truly safe, he'd never share his core secrets with anyone.
The shinobi world was full of monsters and jutsu that could extract secrets straight from one's mind or soul. Kei had to stay cautious.
And so, after a night of tinkering, he really did develop a new feature.
A shinobi-world version of Chat.
It was simple but functional. Thanks to the Three Tomoe's strong ocular power, Kei could install a comms port in anyone connected to the spiritual network. This was layered atop the spiritual access protocol.
With this port, users could remotely communicate via the network—just like messaging apps. It worked in AR mode, projecting a communication UI visible only to the user.
Kei straight-up copied Chat's interface, stripped it down, and removed everything unnecessary—no payments, no subscriptions, just pure messaging.
Now came the testing phase.
It was morning. Kei took a swig of system-made Cola + Coffee, instantly wiping out his fatigue from the sleepless night.
Then, he summoned Uchiha Naori.
Naori bowed respectfully. "Lord Kei, what are your orders?"
Calmly, Kei replied, "Naori-senpai, I'm about to tell you something and ask for your cooperation. You cannot speak of it to anyone—not even the clan."
"Can you do that?"
Naori froze slightly, puzzled.
That confusion was why Kei hadn't granted her access to the spiritual network yet.
Though loyal-looking, and having been drawn into Kei's circle by Kikyo Uzumaki, Naori was still a clan-appointed agent. His loyalty lay with the clan, not Kei.
If Kei ever clashed with the Uchiha, whose side would Naori take?
This was a test—to determine Naori's trustworthiness.
If he hesitated too long, the test would fail.
But Naori quickly responded, "Lord Kei, I am loyal to you now. Not just me—the entire guard squad is loyal to you. This was the decision of both the Clan Head and the Elders."
Kei raised a brow. "Even if what I do conflicts with the clan's principles?"
Naori nodded. "Yes. We serve you. That won't change."
Kei fell silent. Perhaps he had underestimated his status among the Uchiha leadership.
He thought his value lay in his foresight and the system's help—making him a special talent with privileges.
But apparently, the clan's leadership had placed him even higher. Perhaps beyond the Clan Head himself.
A five-man squad of Three Tomoe Uchiha, loyal only to Kei? Even the Clan Head didn't have that.
That was... ridiculous.
Yes, Kei genuinely felt this was excessive—far too extreme.
Clearly, he still didn't fully understand Uchiha logic. Things that seemed irrational or extreme to outsiders were normal for them.
Which made sense. After all, how else could the strongest Uchiha—Madara—leave the village with no one following?
It looked like peace-loving unity. But in truth, it was another form of extremism.
Kei shook his head. He'd never truly understand the Uchiha mindset.
But that was fine. He wasn't trying to be their ruler—just someone with special status. No need to worry about the rest.
He smiled. "Relax, Naori-senpai. I don't plan to oppose the clan. The reason I need secrecy is because this concerns something huge—something that could bring trouble to both me and the Uchiha if leaked."
"When the time is right, it'll be shared with the clan. You'll see."
Naori didn't press further. "Understood, Lord Kei. What do you need me to do?"
Kei activated his Three Tomoe Sharingan. "Don't resist."
Naori complied, and Kei successfully installed a comms port on him—granting her access to the spiritual network.
He also loaded the new "Chat" interface.
Once everything was in place, Kei instructed Naori on how to use it.
To his surprise, a minimalist AR display appeared before Naori 's eyes—just like early Chat.
Left: contact list. Right: chat box. One friend—Uchiha Kei.
This was a test version, so the names used were real. Users could customize them later.
Kei tested text and voice messages. Everything worked perfectly. Pure copy-paste, no need for creativity.
Then, he sent Naori farther away to test long-range comms.
Before leaving, Naori informed the other guards and addressed a thirty-year-old Uchiha youth.
"Star-senpai, while I'm gone, I leave Lord Kei's safety to you."
Uchiha Star—a stoic, cold-faced man—nodded. "As long as I live, no one will harm Lord Kei."
Naori trusted him completely and departed.
Outside the village, in forests, caves, and even underwater, Naori tested the "Chat" comms function. Spiritual network coverage was insane—even places with traditional signal interference had no impact.
Only techniques that blocked mental energy could weaken the signal—fitting for something called a "spiritual network."
After basic testing, Kei recalled Naori.
Then, he added voice and video call functions to the shinobi version of Chat and tested those.
Result: real-time functions had a smaller effective range than basic messaging—likely due to the need for stable signal.
The signal was anchored to Kei himself. Within a 10-kilometer radius, everything was smooth. Beyond that, calls lagged or dropped.
Meaning: if two people tried to call each other but were more than 10km away from Kei—even if they were only 10 meters apart—the call would lag or fail.
To fix this, Kei needed a dedicated server.
Which meant upgrading the spiritual network skill again.
Back to square one.
The server issue needed solving.
Kei sighed. For now, Chat would remain a private tool for internal communication. It only worked within the Hidden Leaf. Once a shinobi left the village for a mission, it became useless.
And that wraps up the mass updates! I hope you enjoyed it. Starting tomorrow, we'll be going back to our regular schedule of 2 chapters per day.
Thank you for reading this and for sticking with the story