"Cast without eye contact… able to make someone act on a suggestion planted into their subconscious… and the only weakness is that you have to keep feeding chakra into it?"
Yun watched Shisui closely.
Shisui nodded.
Yun pressed immediately. "Right now… does only the Fourth know what your Mangekyō can do?"
Shisui shook his head. "Kakashi knows too. In that incident a year ago, his eye played a huge role."
Yun's thoughts flashed to Kakashi's future.
With Minato still alive… he didn't know whether Danzō would try to poison Kakashi's mind later.
Yun's tone turned firm.
"From this moment on—don't tell anyone else about your Mangekyō ability."
"Even if Konoha's higher-ups ask, push it onto the Fourth. Say he ordered you to keep it secret."
None of the three of them were stupid. Itachi and Shisui understood what Yun meant instantly.
Even if this ability had a weakness—continuous chakra output being trackable, and the Byakugan theoretically able to see chakra flow—the danger wasn't technical.
It was political.
Itachi's voice cut in, calm and cold.
"Shisui… one year ago, the enemy who was captured and taken to the Police HQ."
"Has his identity still not been confirmed?"
Shisui shook his head.
"He wore a mask because his face was ruined. And that night, the Fourth still had urgent matters, so we didn't interrogate him until the next day."
"But you already know what happened after."
"Not long after the Fourth and I left the Police HQ… he was rescued."
"And the Mangekyō we handed to Captain Fugaku for safekeeping…"
Shisui's eyes lowered, guilt heavy. "…became the reason he died."
Itachi's eyes—two tomoe turning slowly—didn't waver.
"I know."
"But Fugaku was the clan head. An eye like that should have been held by the clan head."
"I only need one thing: the man's identity."
"Only then can I find my father's killer."
Yun scratched the side of his head.
In his memory, Obito didn't have many "layers" of allies at that time.
Even if Obito had turned dark already, he wasn't dragging the Six Paths of Pain into Konoha to rescue himself.
Madara wouldn't allow that kind of humiliation.
So who did it?
…Black-and-white.
Shisui abruptly tossed a pouch to Itachi.
"A gift for your Academy enrollment."
"Custom tools from the Cat Lady's shop. Light, sharp—should suit you."
Itachi checked the contents.
For the first time, he smiled—just a little.
"Thank you."
Shisui nodded, then looked at Yun and threw him a scroll.
"This has Shadow Clone, Body Flicker, and a few Uchiha Fire Release jutsu."
"You're not like Itachi. I think you'll need these."
Yun snatched the scroll like it was a lifeline.
Shisui really did understand him.
Fire Release or not, he didn't care.
But Shadow Clone?
That was non-negotiable.
With enough chakra and enough mental resilience, Shadow Clone could be pushed into the forbidden territory: Multiple Shadow Clone.
Naruto's absurd training "exploit."
Stack experience.
Multiply growth.
The only problem?
If your mind couldn't handle it—
You didn't "fail."
You just broke.
Shisui reminded him gently, "Shadow Clone and Body Flicker both demand chakra. If you overuse them and drop from exhaustion, nobody's guaranteed to save you."
Then he added, "That's it for today."
"And Izumi's wooden practice shuriken… take it home for her."
—
After they split up and headed back toward the Uchiha district, Yun walked for a while… then stopped.
A heartbeat later—
Swish.
Shisui appeared behind him.
Yun didn't look surprised.
"You were able to sense me?" Shisui asked, startled.
Yun shook his head. "Not sensing."
"I guessed."
"You still had something you didn't want Itachi to hear."
Shisui let out a breath, half amused, half tired.
"Sometimes you really don't feel like a six-year-old."
"Shinobi grow up early—Kakashi graduated at five and became chūnin at six."
"But you…"
"Sometimes you're a kid."
"Sometimes you talk like an old man."
Yun deadpanned. "Want me to call you grandpa?"
Smack.
Shisui flicked him lightly on the head, laughing.
"That joke's too much."
Yun grinned. "Alright. Say it."
"What didn't you finish?"
"I can help you think of a way."
Shisui's expression sobered.
So much that his three tomoe began to link—
His Mangekyō opened.
He scanned the surroundings with that piercing insight, checking for any hidden presence.
Only then did he speak.
"The Kotoamatsukami I mentioned earlier… that's only my right eye."
"My left eye is also called Kotoamatsukami."
"But its ability is…"
No eye contact.
No chakra link.
The target wouldn't even realize anything had happened.
They would simply "choose" what Shisui planted—naturally, smoothly, as if it had always been their own thought.
The ultimate genjutsu.
The true monster.
Shisui's voice lowered, carrying fear—not of enemies, but of his own power.
"When I first awakened… I used it once."
"On that enemy."
"He… felt real remorse."
"And in that remorse…"
"He killed himself."
Shisui's throat tightened.
"That was when I understood how horrifying it is."
"And because it's horrifying… after one use, it takes years to recover."
Yun lifted his head. "When can you use it again?"
Shisui nodded. "Next year."
"One year."
Yun exhaled quietly.
Good.
If it was five years or more…
The clan might tear itself apart long before then.
Yun's gaze sharpened.
"This ability—do not mention it again."
"Not to anyone."
"Not even to me, after today."
"If a third person learns it…"
"…that will be the countdown to the Uchiha's extermination."
Shisui's eyes widened slightly.
Yun didn't soften.
Then he looked toward the Hokage Tower standing in the village center and spoke like someone older than his body had any right to be.
"Politics has been dirty since the day it was born."
"Don't test a ruler's kindness with your sincerity."
"When they weigh the pros and cons…"
"…you won't get the result you want."
Shisui listened, then nodded slowly.
"I understood the terror of this jutsu the moment I awakened."
"Yun is the first person besides me to know."
"And you have secrets too, don't you?"
About Kotoamatsukami…
Shisui's smile turned faint.
"I think you must've guessed already."
Yun snapped his gaze up—
then immediately looked away again.
It doesn't matter if I look or not. Eye contact isn't required.
Shisui's face stayed in his mind anyway: all those months, all those conversations, every little detail.
Yun's stomach sank.
So he's been reading me this whole time.
Of course.
No one becomes a jōnin by being careless.
And Shisui—elite even among jōnin—was built for reading lines people didn't say out loud.
"I won't pry into your secrets," Shisui said softly.
"But I can tell… you like living in Konoha."
"And unlike Itachi… you have real goodwill toward the ordinary Uchiha."
Shisui glanced toward a small shop deeper in the district—run by a middle-aged couple.
A simple sign hung above the door:
Uchiha Senbei Shop.
The owners were Uchiha Geng and Uchiha Teshao—plain, ordinary people, always kind.
Before Yun turned five—back when only his mother worked—those two had often given Yun and Izumi warm senbei for free.
"They're just civilians," Shisui murmured.
"They have an Uchiha surname… and that alone decides whether they live or die."
Yun's voice was quiet.
"Shisui."
"After you recover…"
"Use your power."
"Become clan head."
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