Naruto: Copy System

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"Why are you so excited?" Shin asked, seeing Kushina rush toward him with an overjoyed expression just as he and Konan returned home.

"Take a guess. If you get it right, there's a reward~." Kushina grinned mischievously, eyes dancing with anticipation.

Internally, Shin rolled his eyes. Guess? He wasn't a mind-reader; how could he know why she was all worked up?

"Knock off the riddle game, Kushina. Just tell me." Shin waved a hand dismissively.

"Knew you'd say that. Honestly, I'm not the one who should be celebrating—Mikoto is." Kushina looked behind her at Mikoto.

Shin turned, a bit puzzled, toward Mikoto. Catching his gaze, she silently activated her Sharingan, revealing three tomoe that spun rapidly—then joined together to form a kaleidoscopic pattern.

"Mikoto, you awakened the Mangekyō Sharingan?" Shin's face lit up in genuine surprise, never expecting Mikoto to suddenly unlock the Mangekyō.

"Mm. I realized it earlier." Mikoto gave a faint nod. She was just as happy—after all, for an Uchiha, unlocking the Mangekyō Sharingan was a monumental milestone.

Shin frowned slightly, trying to puzzle out how it happened so suddenly. 'Could it be connected to what happened the other night? '

He quickly dismissed the notion of "dual cultivation" in the Naruto world—didn't exist. It was more likely an emotional trigger. Sadness, joy, love, anguish—many strong emotions could spark a Mangekyō.

But the exact "How" didn't really matter. The important thing was that Mikoto now has the Mangekyō Sharingan.

"Mikoto, don't overuse your Mangekyō." Shin cautioned. "Even though it's a great boon, the Mangekyō can lead to eventual blindness with excessive use."

Just like Sasuke Uchiha, who almost went blind after using his Mangekyō Sharingan too much.

Shin didn't know how to help Mikoto awaken the Eternal Mangekyō Sharingan yet, so he advised her to avoid using it too much.

"Right, Mikoto, which abilities did you get?" Shin asked curiously.

Kushina, Tsunade, and Konan all turned to Mikoto, eager to hear her answer. Despite seeing Mikoto so thrilled, they'd never thought to ask about her new ocular powers.

"Two Genjutsu: my left eye has Tsukuyomi, and my right eye has Kotoamatsukami." Mikoto replied softly.

Shin's eyebrows shot up. If Mikoto truly had those two techniques, she might become the strongest Genjutsu-type ninja out there—aside from Shin himself.

He was already familiar with Tsukuyomi, though his version wasn't exactly a direct Mangekyō technique but an advanced "replica."

But Kotoamatsukami was even more formidable, allowing the user to infiltrate a target's mind without detection and alter their will, permanently rewriting their thoughts. Possibly the only Genjutsu mightier than that was Infinite Tsukuyomi—the world-scale illusion.

"These two Genjutsu are insanely strong. You could probably defeat Tsunade or Kushina if you used them." Shin remarked, half-joking.

Kotoamatsukami, in particular, was a terrifying tool. Mikoto's spiritual energy easily surpassed both Tsunade's and Kushina's, so controlling them should theoretically be possible.

"Is it really that powerful?" Kushina frowned in mild disbelief.

Tsunade, however, found it quite plausible—Sharingan-based illusions were renowned for their lethality. Skilled Genjutsu users sometimes ended battles in an instant, leaving opponents with no idea how they lost.

"Well, I wouldn't want to use them on you two," Mikoto said, smiling gently.

Then she explained the workings of Tsukuyomi and Kotoamatsukami to Kushina and Tsunade, who fell silent upon hearing how broken those abilities sounded.

"Sharingan powers are that overpowered? Kinda makes me jealous." Kushina muttered.

"But it can't control just anyone," Shin chimed in. "If Mikoto tried using it on someone like Uchiha Madara, it probably wouldn't work."

Against someone with immense spiritual power, illusions might fail. That was the reality for all genjutsu, no matter how impressive.

"Oh, so it's not all that then," Kushina said, sounding relieved.

"Huh? It may not be invincible, but it'd still work perfectly on you." Shin shot her a sidelong glance.

"Ugh… Mikoto, promise me you won't mind-hack me!" Kushina quickly pleaded.

"Well… that depends on how you behave." Mikoto teased, flashing her a sly smile.

"Anyway, the Mangekyō Sharingan is seriously dangerous. Looking back, the Senju Clan must be pretty impressive to have bested the Uchiha time and time again." Tsunade commented.

"Impressive? Doesn't look that way now. The Uchiha are still around and wealthy, while the Senju have almost nothing." Kushina interjected.

BOOOOMM!!!—Tsunade smacked Kushina's head.

"Who says we have nothing? Am I not a Senju, huh?" Tsunade glared.

"Ow… you didn't have to punch me." Kushina rubbed her head, wincing.

"Be grateful I didn't go all out!" Tsunade grumbled, rolling her eyes.

Shin watched Mikoto's Mangekyō, exhaling softly.

Bad timing—his System was still undergoing an upgrade. Otherwise, he'd definitely copy her Kotoamatsukami.

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