Though a distance of 130 kilometers didn't fully prove that Ido, in her blood clone state, could completely break free from Yakumo's restraints, judging from Ido's current condition, a range of a few hundred kilometers should pose no issue.
A radius of several hundred kilometers was an utterly terrifying scope—some nations in the shinobi world were roughly that size.
The thought of being able to move freely without restraint sent Ido into a bout of triumphant laughter. "Hahaha, I'm finally free from Yakumo's control!"
"Ido, what are you saying?!"
Suddenly, Yakumo's voice rang in Ido's ears.
Ido jolted in shock. "Y-Yakumo? How—"
As she spoke, Ido turned her gaze toward Uchiha Shinji.
In her understanding, this ghostly ability to whisper in someone's ear from afar should belong solely to their leader.
Yakumo let out a light huff. "Hmph, it's the boss who helped me sense you!"
"Heh, is that so?" Ido gave an awkward laugh, caught red-handed by Yakumo. She hurriedly added, "That was just a misunderstanding earlier—I was only joking!"
Yakumo replied, "That joke wasn't funny!"
Ignoring the bickering pair, Uchiha Shinji was busy sensing "Jikibi" at that moment.
Yakumo had actually gotten one detail wrong.
It wasn't him who helped her connect to Ido—or rather, it wasn't entirely his ability. He had merely acted as a bridge, pointing Yakumo in the right direction. The one who truly sensed Ido was Yakumo herself!
So even without Uchiha Shinji, Yakumo would eventually have been able to locate Ido using her own power.
This raised another question: why did Yakumo possess such an ability?
"Did Yakumo use Koryugan to mark Ido? A range of 130 kilometers—that's an absurdly wide marking radius! What kind of sensory ninjutsu could achieve that? Even my Eternal Mangekyo Sharingan, with its dojutsu power supporting 'Jikibi,' doesn't have that capability! Unless…"
In an instant, a specific ninjutsu flashed through Uchiha Shinji's mind.
A space-time ninjutsu known as the "Flying Thunder God Technique"!
Once the technique's seal was inscribed, the caster could sense it no matter the distance.
"It's a space-time ninjutsu!"
Uchiha Shinji's heart tightened.
The only explanation he could think of for maintaining a connection over such a distance was a space-time ninjutsu.
"Could the mysterious dojutsu hidden within Koryugan be a space-time ninjutsu that requires a mark to activate?"
After piecing things together, the vague hunch in Uchiha Shinji's mind transformed into a tangible direction he could verify.
Without delay, he interrupted the arguing duo. "Yakumo, do you sense anything off right now?"
"Off?"
Yakumo and Ido paused in unison.
Then Yakumo shook her head. "Boss, I don't feel anything strange."
After a moment's thought, Uchiha Shinji rephrased his question. "I transplanted this pair of Koryugan into you, and there's a dojutsu hidden within them—you should know that, right? Try it now. See if you can activate that dojutsu!"
Yakumo was taken aback. "Right now?"
Uchiha Shinji nodded and gave her a nudge. "Yes, right now! Try sensing Ido, then figure out a way to trigger that dojutsu!"
Yakumo fell silent.
Clearly, she had begun following Uchiha Shinji's instructions, attempting to activate the mysterious dojutsu concealed within Koryugan.
Yet, after a long wait, nothing happened.
Ido yawned. "Hey, can you do it or not?"
Uchiha Shinji shot Ido a sharp glare.
Ido shrank back, muttering under her breath, "I just don't want Yakumo wasting your time, boss!"
Finally, Yakumo spoke up. "Boss, I'm sorry… I've tried every method I could think of, but I can't activate that dojutsu!"
"It didn't work?" Uchiha Shinji's expression darkened as he wondered, "Could my guess be wrong?"
Having survived the First Hokage's cell transplant surgery, Yakumo's constitution was no longer what it once was. Moreover, thanks to her, Koryugan had devoured a significant amount of the "Power of All Creation" during that procedure. By all logic, Yakumo should have the ability to activate the mysterious dojutsu hidden within Koryugan.
"What went wrong? Was I mistaken?"
Uchiha Shinji began to waver.
Space-time ninjutsu were exceedingly rare and precious in the shinobi world—so much so that he almost didn't dare believe the Koryugan he'd created could coincidentally awaken one.
After all, every space-time ninjutsu in the shinobi world was a game-changer.
The "Flying Thunder God Technique" had earned the Fourth Hokage the title of "Yellow Flash," while "Kamui" had propelled Obito to heights he never should have reached.
Just as Uchiha Shinji was about to call off the test, his peripheral vision caught sight of Ido, who was idly standing by.
More precisely, it caught the Koryugan in Ido's eye sockets.
The body Ido was using now was just a blood clone, meaning the Koryugan in her eyes was clearly a simulation created by Koryugan's dojutsu power.
Because of this, Uchiha Shinji had overlooked her until now.
But thinking it over, wasn't it through this very Ido that he'd used "Jikibi" to connect with Yakumo, who was far away in Hidden Leaf Village?
So Ido herself held a considerable amount of Koryugan's dojutsu power. Activating the mysterious dojutsu hidden within Koryugan likely required her involvement.
Struck by a sudden realization, Uchiha Shinji immediately ordered, "Yakumo, Ido, both of you try activating that dojutsu together!"
Ido pointed at herself. "Me too? But I'm just a blood clone right now—the real Koryugan is with Yakumo!"
Uchiha Shinji's tone left no room for argument. "Do as I say!"
"Yes!"
Yakumo and Ido responded in unison.
No sooner had they spoken than Uchiha Shinji heard a faint whoosh.
He quickly scanned his surroundings, but the scenery remained unchanged, and Ido hadn't been teleported away.
If there was any difference from a moment ago, it was that Ido, for some reason, stood there with her mouth agape, utterly stunned.
"You—"
Uchiha Shinji started to ask, only to freeze mid-sentence.
Because the figure before him wasn't Ido at all—it was Yakumo, who should have been 130 kilometers away in Hidden Leaf Village.
"B-Boss, where am I?!"
Yakumo's face was etched with panic.
One second, she'd been in her bedroom; the next, she was in this wilderness. If Uchiha Shinji weren't standing in front of her, she'd have been even more freaked out.
Before Uchiha Shinji could explain, Ido's startled cry echoed in Yakumo's ears. "What's going on? How did I get back?!"