Sasuke made a slightly embarrassed gesture at Naruto.
"Just a teensy bit."
"A teensy bit?"
Naruto looked at Sasuke, somewhat speechless. You call that a teensy bit? The coin melted. Is there even any lightning nature left in that? The iron's glowing red. If I gave you a hammer, would you start forging iron?
"I'll demonstrate again. Watch closely. You can only infuse lightning-nature chakra. You can't control multiple types of chakra yet, or it'll blow up right in your hand."
"Watch closely."
Naruto took out a coin, briefly gathered power in his hand, and fired it. The blue-and-gold beam appeared again, blasting a deep furrow into the ground. Wisps of white smoke rose, and a scorched smell drifted over.
"Hiss."
This was Itachi's first time seeing Naruto use this ninjutsu. He hadn't expected it to be so destructive.
"A powerful ninjutsu."
Itachi gave a fair assessment. When Naruto unleashed the ninjutsu just now, he had even activated his Sharingan, taking in every detail of the technique.
"Well? Have you learned it?"
And what about Sasuke?
He didn't have the Sharingan yet, so he couldn't copy Naruto's ninjutsu or observe the flow of his own chakra. That was also why Sasuke couldn't infuse only Lightning Release Chakra into the coin.
He couldn't control his chakra that precisely.
"I have."
But Sasuke shook his head furiously as he said it, leaving Naruto somewhat speechless.
"Have you learned it or not?"
"No."
But while Sasuke said no, he kept nodding.
Sasuke's behavior infuriated Naruto. His fists clenched tighter and tighter. Fighting back the urge to hit Sasuke, Naruto could only patiently explain it to him.
He distinctly remembered Sasuke being pretty smart in the original story, so why did he seem so stupid now? He couldn't even understand such a simple principle, despite having it explained to him.
Electricity generated magnetism, and magnetism generated electricity. The resulting electromagnetic field was the most fundamental part of this ninjutsu. Gather Lightning Release Chakra in your hand, then infuse it into the coin. The coin would become magnetized, producing a magnetic moment. It would then be subjected to the Coulomb force generated by the magnetic field and could be launched.
"Do you understand now?"
Sasuke: "Blah blah blah."
Naruto helplessly pressed a hand to his forehead. Apparently, he still hadn't understood. Was it really that hard?
Naruto was deeply puzzled. He looked to Itachi for help, only to find him deep in thought too, with sweat even beading on his forehead. Now Naruto didn't know what to do.
This seemed pretty simple back on their Blue Planet. Any student who had studied physics knew it. Those who didn't might simply have forgotten.
Still puzzled, Naruto completely failed to consider that this world's tech tree was skewed. They clearly had things like electric lights and even trains, yet, strangely enough, there were no firearms or other modern weapons.
Naruto had been curious about this world's tech tree too, but he wasn't a scientist and had no desire to straighten it out.
"Itachi, even you don't understand?"
Naruto looked at Itachi curiously. When he saw Itachi nod as though compelled by some unseen force, it was Naruto's turn to fall silent.
Left with no choice, he could only start teaching again. Since the normal approach didn't work, they would go straight to demonic cultivation.
"Then, Itachi, can you perform the ninjutsu I just used?"
Itachi nodded. His Sharingan had already copied Naruto's ninjutsu.
"Okay, show me."
Taking the coin Naruto handed him, Itachi easily unleashed the Railgun. Although it wasn't quite on Naruto's level, it was already very close. It was the same blue-and-gold beam, only slightly less destructive than Naruto's, showing just how terrifying the Sharingan's copying ability was.
Seeing his older brother unleash a powerful ninjutsu like the Railgun so easily made Sasuke burn with envy. He wanted both to learn Naruto's Railgun and to awaken a Sharingan like his brother's.
Watching Itachi unleash his ninjutsu so easily, Naruto couldn't help clicking his tongue. The Sharingan was just overpowered. Other people spent ages practicing a ninjutsu, while you could learn it with a single glance. Someone with a less resilient mindset might drop dead from anger on the spot.
After all, Naruto, who had a system, also had the Sharingan skill. He thought of his new skills again.
"System, show my personal panel."
Host: Naruto Uzumaki Strength: Kage Level Third Stage (slightly above ordinary Kage Level) Abilities: Kurama Link, Shadow Clone, Clone Great Explosion, Gallant Rasengan, Wind Release: Rasenshuriken, Lariat, Chidori, Lightning Release: Kirin, Byakugan, Sharingan, Cherry Blossom Impact, Genjutsu: Haze (a woman)... Summons: Ninja Dog, Blue Snake, Gamakichi, Ninja Tortoise, Sickle Weasel, Enma Divine artifacts: Kōkinjō, Shichiseiken, Benihisago, Bashōsen, Amber Purifying Pot, Kubikiribōchō Secret scrolls: Forbidden Jutsu: Yin Healing Wound Destruction, Release Jutsu: Dispel, Secret Scroll: Chakra... Combat power: 1,000,000+ Chakra: 810,000 System evaluation: (Having just entered the Shinobi World, you already have the strength to put up a fight. A very strong human-kun.)
"Sasuke, come on, come over here."
Seeing that he really did have the Sharingan, along with his newly drawn skill, Naruto knew that the demonic cultivation method he'd just thought of would definitely help Sasuke.
After Naruto spoke, however, Sasuke stood where he was, stammering and not daring to approach. Usually, Naruto called him either Zhuzi or Uchiha Sasuke. Now that he was calling him Sasuke outright, he definitely wasn't up to anything good.
"Get over here."
Naruto grabbed Sasuke and pulled him over, immediately activating his skills: Genjutsu: Haze and Sharingan.
"A woman, Sharingan."
Before Sasuke could react, he saw a pink, voluptuous woman slowly walking toward him. He flushed at the sight. He didn't know whether he was imagining it, but he kept feeling that the woman in front of him wasn't wearing any clothes. He turned his head away, not daring to look.
But when he heard the latter part of Naruto's words, he looked at Naruto in shock. Naruto's eyes had turned scarlet. What else could that be but the Sharingan?
But Naruto gave Sasuke no time to think. First, he glared at Sasuke with his Sharingan, then moved behind him while he was dazed and delivered a kick.
"Off you go!"
Sasuke collided directly with the "a woman" skill in front of him. The instant they touched, "a woman" exploded into a cloud of pink. Naruto didn't idle either. He intensified his control over his Sharingan and pulled Sasuke straight into an illusion.
Itachi, standing nearby, also noticed Naruto's suddenly appearing Sharingan, yet he couldn't sense even a trace of Uchiha blood in him. That was truly strange.
"Naruto, that Sharingan of yours?"
"Itachi, I'll explain later. Let's awaken Sasuke's eyes first."
As Naruto considered what illusion to create for Sasuke, he suddenly realized something. He was already putting Sasuke through demonic cultivation, so why make up an illusion himself? Why not just use an existing formula?
He would give Sasuke a round of Itachi's massacre that night and let him watch a horror movie.
At that thought, the corners of Naruto's mouth became harder to keep down than an AK.
Seeing Naruto's sleazy grin, Itachi could only silently pray for Sasuke, hoping he could make it through.