Inside the clan head's mansion of the Kurama clan.
"Yawn…"
Sitting on her bed, Yakumo let out a long yawn.
Normally, she'd already be sound asleep by this time, but today, because of the leader's orders, she had stayed up until now.
Tilting her head to glance at the bright moon outside the window, Yakumo murmured, "It's been so long since my chakra was last extracted. I wonder what this is all about—I really want to know!"
Whoosh.
At that moment, Ido emerged from Yakumo's body and said, "If you're so curious, why not just go ask?"
Yakumo pouted, "Ido, you're breaking the rules again!"
Ido shrugged, "You're not doing anything right now, so I thought I'd come out and chat with you!"
"Fine, then!" Yakumo propped her chin with her hand and asked, "Ido, what do you think the leader's been busy with lately?"
Ido replied, "Obviously, he's busy dealing with the 'Upper String'! Don't you remember? Not long ago, he was chasing down the 'Upper String Two' in the Land of Iron!"
Yakumo pursed her lips, "Why does the leader take Sasuke along but not me? Am I not as good as Sasuke?"
Within the organization, most members had already guessed that Sasuke was 'E,' and Yakumo was no exception.
"Tch, Sasuke's nothing!" Ido scoffed, "If we teamed up, dealing with the 'Upper String Two' would be a piece of cake! The leader probably only brought Sasuke to hunt the 'Upper String Two' to train that idiot!"
"Hehe…"
Yakumo couldn't help but giggle at Ido's words.
Just then, Yakumo suddenly felt her chakra surging uncontrollably within her, as if it were pouring out through some channel.
"It's starting…"
Yakumo quickly steadied her mind, choosing not to resist.
Ido, realizing the leader had begun extracting Yakumo's chakra, didn't linger outside and swiftly slipped back into Yakumo's body.
Inside Sasuke's apartment.
After having the kill on the 'Upper String Two' stolen by Shinji and losing to Kakashi in a spar, Sasuke had been in a foul mood for days.
Learning that his chakra would be extracted tonight only worsened his mood.
"When's it going to start?" he muttered impatiently, pursing his lips.
Unlike Yakumo, who willingly allowed her chakra to be extracted, Sasuke had always harbored resentment toward the leader for taking his chakra.
It was only because he needed the leader and the organization that he had no choice but to comply.
The thought that, despite awakening the Mangekyo Sharingan, he kept facing setbacks only deepened his frustration.
Suddenly, his body trembled as he felt his chakra surge like a breached dam, rapidly pouring out!
"Damn it!"
Knowing it was the leader extracting his chakra, he suppressed the urge to resist and endured it silently.
Though he didn't fight back, his expression darkened uncontrollably.
Inside the secret laboratory.
The chakra of the Two-Tails Jinchuriki, Yugito Nii, didn't last long—only about half an hour before it was temporarily depleted.
It wasn't that Yugito, Cloud Village's perfect Jinchuriki, had less chakra than Karin.
Rather, the 'Wazunagi' channel caused chakra loss during transmission, with the degree of loss determined by distance.
To avoid exposing his secret laboratory, Shinji hadn't brought Yugito directly to the lab but instead placed her in a hidden cave some distance away.
Additionally, in terms of chakra efficiency, Yugito's tailed beast chakra was clearly less effective than Karin's own chakra.
Thus, as Yugito's chakra neared depletion, Shinji decisively used 'Wazunagi' to connect to Yakumo and Sasuke, promptly extracting their chakra to compensate.
Yakumo, having integrated First Hokage cells and achieving excellent fusion thanks to her Koryugan, possessed exceptionally high-quality Yang Release chakra.
As the reincarnation of Indra Otsutsuki, Sasuke's Yin Release chakra quality was among the highest in the shinobi world.
Thus, following Yugito, Shinji chose them.
His goal was to extract their chakra simultaneously, using their high-quality Yang Release and Yin Release chakra to mimic a state close to Karin's own chakra, stimulating the Eternal Mangekyo Sharingan in her eye sockets, which were undergoing a qualitative transformation.
The results were as Shinji expected.
Previously, consuming all of Yugito's chakra had only slightly raised the peak chakra fluctuations in Karin's Eternal Mangekyo Sharingan.
But now, with Yakumo and Sasuke's chakra infused, the peak chakra fluctuations in Karin's Eternal Mangekyo Sharingan surged dramatically.
While maintaining the 'Wazunagi' channel, Shinji recorded the instrument data in real time.
As the values climbed steadily, Shinji's expectations grew.
Though the Eternal Mangekyo Sharingan in Karin's eye sockets devoured chakra like a bottomless pit, only close observation could reveal the changes occurring within them—a qualitative transformation that even surprised Shinji!
Soon, Yakumo and Sasuke's chakra ran dry.
Though their chakra quality was high, in terms of quantity, it was noticeably less than Yugito's.
At this point, Shinji could have chosen Shion, Haku, Neji, Kimimaro, or even 'H,' implanted in Neji and Kimimaro.
But he didn't, as he had an instinctive feeling that a brand-new pair of Rinnegan was about to be born before his eyes. So, after cutting the 'Wazunagi' channel to Yakumo and Sasuke, he directly channeled his own chakra through the 'Wazunagi' channel into Karin, who was mere steps away.
At that moment, Karin was just one step away from the breakthrough. With Shinji's chakra pouring in fully, her tightly shut eyes suddenly snapped open.
Whoosh!
The instant she opened her eyes, her scarlet pupils began to twist and spin. As they spun, the blood-red hue gradually faded, turning into a mysterious pale purple. Spirals in the pale purple gradually formed into orderly circles, stabilizing.
Witnessing this, Shinji stood frozen in place.
Even though he had anticipated this and orchestrated the entire process, seeing this breathtaking moment with his own eyes, he couldn't suppress the shock in his heart!
"I've really created a pair of Rinnegan!"
Shinji stared intently at the purple pupils in Karin's eye sockets, unable to contain his awe as he let out a heartfelt exclamation.