Mumei stood up on her own somewhat stubbornly: "Don't worry, I'm perfectly fine!"
Shinji shook his head helplessly.
"Yachihoko" wasn't an ordinary Mangekyo dojutsu. It involved partial chakra editing abilities and consumed mental energy significantly. Even if Mumei's pupil power was sufficient to support her using "Yachihoko," she hadn't reached the "Six Paths Level" after all. Excessive use of "Yachihoko" would still overwhelm her body.
On the other side.
Karin lay on the ground with a tired face, panting heavily. Yet despite this, her face was brimming with excitement.
Shinji asked: "Karin, how does it feel?"
Karin slowly got up: "Not bad, I feel my pupil power has become much stronger!"
"Do you feel any discomfort in your body?"
Shinji didn't pay too much attention to the improvement in Karin's pupil power but instead focused on inquiring about Karin's current physical condition.
Forcibly increasing pupil power by using "Yachihoko" to launch a chakra impact was reckless in itself. Just because Shinji succeeded himself didn't mean he could assume others could copy it exactly.
Karin felt her body for a moment, then shook her head: "I haven't found anything abnormal for now."
Shinji breathed a sigh of relief.
After all, Karin possessed the Sage's Body of both the Uzumaki and Senju clans. Her constitution was even stronger than Shinji's back then, so being able to withstand the chakra impact of Mumei's "Yachihoko" was within expectations.
Seeing the experiment succeed, others gathered around one after another.
Ryūzetsu exclaimed: "Senior Karin, your pupil power really became much stronger. When I used sensory ninjutsu to sense you, my spirit actually felt a faint pain!"
The usually indifferent Kimimaro nodded unexpectedly: "Hmm!"
Ido circled around Karin and also marveled: "So pupil power can be improved like this? Simply incredible!"
Actually, the first one to discover the significant increase in Karin's pupil power was none other than Ido, the spirit body. Because for her, whether she could launch a spiritual attack on the target was the most intuitive proof.
And when she tried to launch a spiritual attack on Karin, her instinct sent her the highest level of warning, indicating that if she did so, there would likely be no return.
Just from this point alone, Ido knew that Karin had become strong to the point where she couldn't even touch her.
Sasuke couldn't hold back anymore and found Shinji: "Shinji, can I accept Mumei's chakra impact?"
Shinji nodded: "Theoretically, of course!"
"Then..." Seeing Mumei looking weary, Sasuke said: "Please arrange it as soon as possible, I'm ready anytime!"
Shinji shook his head: "I said theoretically."
Sasuke was stunned, a look of doubt appearing in his eyes.
"The chakra impact launched by Mumei can only push the pupil power to the limit when the dojutsu Kekkei Genkai is in a stable state. In other words..." Explaining halfway, Shinji glanced at Yakumo who had just rushed back to the central training ground, then continued: "If your eyes are already at the extreme of a stable state, then even accepting Mumei's chakra impact won't have much effect!"
Sasuke asked hurriedly: "You mean my eyes are already Eternal Mangekyo Sharingan, belonging to the extreme of the Sharingan state, so even accepting chakra impact cannot achieve further breakthrough?"
Yakumo also looked at Shinji eagerly, waiting for his answer.
Shinji nodded: "Yes, your 'Eternal Mangekyo Sharingan' and Yakumo's 'Kōryūgan' (Red Dragon Eye) are both at the extreme of their respective states. Unless you break through further, accepting chakra impact has little significance!"
Sasuke instantly understood.
The step from Eternal Mangekyo Sharingan to Rinnegan had no shortcuts; he must complete it himself.
And if he successfully opened the 'Rinnegan', then he could be like Karin, accept Mumei's chakra impact, and upgrade the ordinary 'Rinnegan' to 'Six Tomoe Rinnegan'.
Yakumo, however, looked somewhat lonely.
Because compared to Sasuke who had a clear promotion path, her path forward was chaotic.
Actually, she had also sought Shinji privately, but Shinji told her clearly that the 'Kōryūgan' was already the perfect combination of the 'Ketsuryūgan' (Blood Dragon Eye) and 'Akagan' (Red Eye) lineage. It was a dojutsu Kekkei Genkai only second to the level of 'Rinnegan' and 'Tenseigan'.
Unless a level-crossing great transformation appeared, similar to Sharingan awakening into Rinnegan, or Byakugan awakening into Tenseigan, it would be difficult to improve pupil power through ordinary means.
After dismissing everyone, Shinji kept Karin behind alone.
Shinji asked: "Did you awaken that dojutsu?"
Karin nodded slowly, her expression somewhat complicated: "Yes, the moment I opened the 'Six Tomoe Rinnegan', I mastered the jutsu rooted deep in the Rinnegan that you mentioned, it's just..."
Shinji asked casually: "Just what?"
Karin answered: "Just that it doesn't seem to be the Space-Time type dojutsu you mentioned before, but a kind of... I also can't say what category it belongs to."
"Oh?!" Shinji became interested and asked: "What exactly is the dojutsu you awakened?"
Karin said in a deep voice: "My dojutsu is named 'Tamatsukuri no Hoko', and the effect is to swap states with the target!"
"Swap states..."
Shinji frowned slightly.
This dojutsu named 'Tamatsukuri no Hoko', at first glance, was indeed not a Space-Time dojutsu in the traditional sense.
But on second thought, swapping states seemed to also involve the domain of Space-Time.
After all, whether the dojutsu rooted deep in the Rinnegan must be a Space-Time dojutsu was just Shinji's summary based on the situations of Madara Uchiha and Sasuke who opened the Rinnegan in the original timeline. Even so, Madara Uchiha's 'Limbo: Border Jail' wasn't actually considered a complete Space-Time dojutsu.
Thinking of this, Shinji said: "Elaborate?"
Karin weighed her words and explained: "My 'Tamatsukuri no Hoko' can lock onto a target, and then swap the states of both parties at that time. Pupil power, chakra volume, and even injuries, etc., are all included in the state."
Shinji clicked his tongue: "In other words, if your chakra is exhausted and you are heavily injured, you can directly swap your dying state to an enemy in perfect condition through 'Tamatsukuri no Hoko'?"
"Hmm!"
Karin nodded.
Shinji sucked in a breath of cold air. Initially, he thought Karin's 'Tamatsukuri no Hoko' could only swap chakra. Unexpectedly, even injuries could be swapped. In this way, the room for manipulation was greatly increased. If the enemy was unprepared, one could even directly kill a powerful enemy in perfect condition through underhanded means.
Of course, with Shinji's current vision, he naturally knew any dojutsu had its limits, so the effect of 'Tamatsukuri no Hoko' still needed actual testing to be determined...