"It can be activated without eye contact, making people unconsciously act according to the subconscious implanted by the caster, and the only drawback is the need for a continuous supply of chakra?"
Seeing Shisui nod, Yun quickly followed up: "Is the Fourth Hokage the only one who knows about this technique?"
Shisui shook his head slightly. "His student, Kakashi, knows too. In that incident a year ago, his Sharingan played a big role."
Yun recalled Kakashi's history. While the Fourth was still around, there was no telling if Danzō might've tried to manipulate Kakashi.
"From now on, don't tell anyone about the abilities of your Mangekyō Sharingan. Even if the Konoha higher-ups ask, just say the Fourth knows. Leave it at that."
All three of them weren't fools; they understood Yun's point immediately.
Fortunately, the technique had one clear weakness: the constant chakra output was needed. And with Byakugan, it could be seen who was under its control.
"Shisui-nii."
Itachi's voice called out, his eyes revealing the two tomoe of his Sharingan gently spinning. "That enemy from a year ago, the one who was captured and handed over to the Police Force. Was his identity ever uncovered?"
Shisui shook his head slightly. "That enemy wore a mask because his face was destroyed. And since the Fourth had something important at the time, we didn't question him until the next day."
"But you should already know what happened after that. Just as the Fourth and I left the station, he was rescued. And the Mangekyō Sharingan that was given to Clan Leader Fugaku for safekeeping... became the cause of his death."
He looked at Itachi with guilt in his eyes. "And that eye..."
Itachi cut him off. "I know. But as the clan head, it was his duty to safeguard a rogue Sharingan. I just need to know that person's identity to find the one who killed Father."
Yun scratched his head nearby. A year ago, Tobi's "Decoy Team 2" probably didn't have many members. As for "Team 1", who knew if they had gone full dark side by then? If they had, would they have sent Pain and the Six Paths to do the rescue? Would Madara even allow that?… Probably Black Zetsu and White Zetsu, huh?
Things got awkward for a moment after Itachi brought up his father's murder. The silence lingered until Shisui tossed a ninja tool pouch to Itachi.
"A gift to celebrate your enrollment. It's custom-made by Granny Cat. The kunai are lightweight and sharp; they should suit you well."
Itachi looked inside the pouch, then gave a rare smile. "Thank you."
After that, Shisui turned to Yun and tossed him a scroll. "This scroll has Shadow Clone, Body Flicker, and a few Uchiha Fire Release techniques. You're different from Itachi, I think you'll find these useful."
Yun eagerly caught the scroll. Shisui really got him.
'Fire jutsu? Whatever. But Shadow Clone, the god-tier jutsu for ditching class? A must-have.'
'Not to mention the forbidden technique, Multi Shadow Clone Jutsu, Naruto's ultimate training hack. As long as you can handle it, it's like stacking EXP endlessly.'
'…If you can't handle it? Brain death. That's the end of that.'
"Both Shadow Clone and Body Flicker require large chakra reserves. If you overdo it, no one will be there to save you," Shisui warned. "Anyway, that's all for today. Yun, could you take Izumi's wooden kunai back for her?"
...
After the three of them split up on the way back to the Uchiha compound, Yun stopped halfway.
"You could actually sense me?"
Shisui, who had suddenly appeared, sounded surprised. Yun shook his head: "Not sensing. I just guessed you had more to say but didn't want Itachi to hear it."
"Phew…"
Shisui let out a deep breath. "Sometimes, you really don't seem like a six-year-old. Though I know ninjas mature quickly, Kakashi graduated at five and became a chunin at six, but you… Sometimes you're like a child, other times you feel like an old man."
"Call me Grandpa?"
Smack!
Yun, who had been joking, got a light smack. Shisui chuckled: "That's going too far!"
Yun grinned. "So, what else did you want to say? Tell me, maybe I can help."
Shisui's expression turned serious. In his eyes, the three tomoe slowly connected, activating his Mangekyō.
After scanning the surroundings using enhanced perception, Shisui finally spoke. "What I told you earlier about Kotoamatsukami, that was just my right eye's ability. My left eye also holds Kotoamatsukami, but with a different effect…"
No eye contact needed. No chakra link required. The target is completely unaware they're being controlled.
This utterly broken ability was Shisui's ultimate genjutsu: Kotoamatsukami.
"When my eye first awakened, the technique activated once. That enemy… in overwhelming regret… killed himself."
Even Shisui was scared of this jutsu. "From that moment, I understood just how terrifying it is. And because of that, once used, it takes years to recharge."
Yun looked up slightly. "So… when's the next time you can use it?"
"Next year. I have to wait one more year," Shisui replied.
Yun let out a breath of relief. Thank god it wasn't five years. Any longer and the Uchiha might self-destruct before then.
"This technique... no one else should know about it. Not even one more person. If a third person finds out, that's when the Uchiha Clan will be destroyed!"
After that, Yun glanced toward the Hokage's office at the center of the village. "Politics have been drenched in blood since the moment of their creation. Never test the kindness of those in power with your sincerity. Weighing pros and cons... you won't get the outcome you want."
Shisui nodded in agreement. "Since awakening my eye, I've feared this jutsu. Yun, you're the first person I've told. And you... You've got secrets too, right? I feel like you already knew about Kotoamatsukami."
Yun suddenly looked at him, then sharply looked away. He thought about it, does it matter if he looks? The technique doesn't require eye contact.
As Shisui's smiling face came into view, memories of the past six months together replayed, each moment, every conversation, flashing through his mind.
Never underestimate anyone who becomes a jōnin! Analyzing intel, reading between the lines, that's the basics of a jōnin.
And for an elite among jōnin like Shisui? That goes without saying.
"I won't ask about your secrets, Yun. But I can tell, unlike Itachi, you genuinely care about the Uchiha villagers. You like your life in Konoha."
Shisui looked ahead toward a small shop in the clan's district, Uchiha Pancake Shop, run by a middle-aged couple named Uchiha Kine and Uchiha Tebiyaki. Just simple civilians, but they treated everyone with kindness.
Before the age of five, with only Yun's mother working to support the family, the couple had often given Yun and Izumi free pancakes when they had nothing to eat.
"They're just ordinary people. But because of the Uchiha name, they'll have to choose life or death. Shisui… once you recover, use your power to become the clan head!"