Reborn Into Naruto World With Tenseigan
Combining Two Pairs Mangekyou Sharingan
(p.s.there is no exact method that explains how the Eye Transplant for the Eternal Sharingan Mangekyou was performed, the method below is pure nonsense, but it is, so just accept it.)
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To seal Daikokuten into the right eye of Uchiha Ryota with the help of the Transcription Seal, Kuroto must first transplant Uchiha Hideki's Mangekyou Sharingan.
Kuroto was obviously not going to risk taking the Tenseigan out of his main body, and as there were no other clones other than the current Suijin Clone so the Suijin Clone was the only option, he said, he had to use it for the fusion process of the two Mangekyou Sharingan pairs.
Using surgical instruments, Kuroto carefully removed the semi-finished Byakugan from the eye sockets of the Suijin clone.
In the future when he would use the Suijin clone for the ritual of reaching Kekkei Mora through the Chimera technique, there should be no flaws in his main body or any clones, either, even the eyes in the eye sockets of the clone will also be the same half-finished Byakugan, therefore, this half-finished pair of Byakugan should not be lost or destroyed, otherwise, the entire Clone that he had developed until now would become useless.
Therefore, Kuroto carefully sealed the semi-finished Byakugan in a preservative solution and then transplanted the Mangekyou Sharingan Hideki in the eye sockets of the Suijin Clone.
Next, Kuroto took out the body of Uchiha Ryota who was in a temporary static state and reassembled the Mangekyou Sharingan into her eye sockets.
After that was done, the initial preparations had been completed, and the next thing he had to do was to use the Transcription Seal – 2.
To this end, Kuroto again used the Soul Descend Tenseigan to transfer his soul to the Suijin Clone.
Coming to the test bench where Uchiha Ryota lay unconscious, Suijin activated the Mangekyou Sharingan.
Then after finishing all the preparations, Suijin used her index finger and gently patted the forehead of Uchiha Ryota.
As soon as the action was done, the Transcription Seal was activated and Hideki's Mangekyou Daikokuten Technique was sealed into Ryota's right Mangekyou Sharingan.
The moment the Transcription Seal was completed, Suijin suddenly felt exhausted.
“Hah... Hah…
Leaning against the wall, Suijin panted and rested for a while to ease his breath.
"Using this clone's body to use the Transcription Seal is quite difficult!"
When Kuroto used her main body to take out the Transcription Seal from the Tenseigan, she only felt a momentary weakness, but this time, she used the Suijin Clone to cast the Transcription Seal of the transplanted Mangekyou Sharingan, but this time, she used the Suijin Clone to cast the Transcription Seal of the transplanted Mangekyou Sharingan, so he had to endure more pressure.
"Fortunately, the Transcription Seal only needs to be used once otherwise this clone will be damaged from enduring excessive pressure!" – Suijin muttered as he shook his head slightly.
After recovering, she tried to look at the Transcription Seal, and as she expected, there was nothing she could see from Ryota's right eye, so changed her approach, and, Suijin tried to check his eyes and found that Daikokuten had disappeared from his eyes.
The reason why it was lost was because he transferred it completely.
Confirming his guess, Suijin muttered, "I just hope my guess is correct."
The reason for doing so much action was to ensure that the Eternal Mangekyou Sharingan that would be obtained after the merger of two pairs of Mangekyou Sharingan could have Daikokuten in the right eye and Yaoyorozu in the left eye.
However, this would only be the case if his assumption that the 'Transcription Seal would have some influence' was correct, otherwise, the Eternal Mangekyou Sharingan would not have Daikokuten, but rather Okuninoshi, instead, which is the original dojutsu Ryota awakens.
After completing the second step, now the last step is to instill
the two Mangekyou Sharingan to begin their fusion became the Eternal Mangekyou Sharingan pair.
Next is to place the Suijin Clone in the Test Bench and take the Mangekyou Sharingan Hideki pair from his eye sockets and replace the half-finished Byakugan pair back into his eye sockets.
After that was done, Kuroto took the Mangekyou Sharingan pair that had been taken and walked to another test bench where Uchiha Ryota lay.
The reason Kuroto didn't kill Hideki and Ryota was because he knew that later, he would need them to merge the two pairs of Mangekyou Sharingan into the Eternal Mangekyou Sharingan.
Since the fusion process requires one of Mangekyou's owners to act as a trigger to initiate and carry out the fusion process, the reason is obviously to provide a continuous and stable supply of chakra.
As for who should be chosen as the trigger, this decision was entirely up to Kuroto.
And since Kuroto had chosen Mangekyou Sharingan partner Ryota as the base due to the Mangekyou Sharingan Technique, therefore, Kuroto would obviously choose Ryota to be the Trigger.
Coming to the side of the Test Bench where Ryota is kept, Kuroto reaffirms that all the seals he gave her are working, as well as all the indicators are normal, and because everything is correct, exactly as it should be, Kuroto took a deep breath and began the final step towards that fusion.
The merging of two pairs of Mangekyou Sharingan into the Eternal Mangekyou Sharingan occurs when one pair of eyes completely engulfs the visual power of the other pair of eyes.
Therefore, the surgery for fusion is actually a transplant (not the exact term for what is meant here) of Mangekyou Sharingan Hideki into Ryota's eye socket, who already had a pair of Mangekyou Sharingan in his eye sockets.
In short, Ryota's eye sockets would hold two pairs of Mangekyou Sharingan with each other, at the same time.
And this is also the reason why the Eternal Mangekyou Sharingan pattern is a combination of both pairs of Mangekyou Sharingan.
The space in the eye socket is clearly limited, and the area connecting the optic nerve is very smooth, making it very difficult to accommodate two eyeballs in one eye orbit at the same time.
Even a small error will not only damage the orbit, especially the nerves, but will also damage the Mangekyou Sharingan pair, which will directly cause fusion process failure, he said, so Kuroto who already has rich experience in eyeball transplantation should do it. Be careful when doing this overly complicated surgery.
After opening Ryota's eyelid with the help of a surgical instrument, Kuroto begins a left eye transplant operation.
The cavity of the human eye is surrounded by soft tissue, and the eyeball is also composed of soft tissue, therefore, it is not impossible to squeeze it to accommodate two eyeballs in one eye socket. The important thing is to make sure that neither the eye orbit nor the eyeball is damaged during the transplant process.
The difficulty of this operation was so high that Kuroto took an entire hour to transplant his left eye alone.
After the left eye was transplanted, Kuroto breathed a sigh of relief and wiped the sweat on his forehead.
The left eye transplant was successful without rejection.
After drinking water and taking a five-minute break, Kuroto again began transplant surgery, this time for the right eye.
Similar to the left eye, the right eye is also transplanted smoothly without any rejection.
With this, the transplant operation is completed, and Kuroto wraps Ryota's eyes with an antibacterial cloth that will also keep the eyes moist.
Kuroto had no idea how long it would take Uchiha Madara to merge the two Mangekyou Sharingan into the Eternal Mangekyou Sharingan pair, the Eternal Sharingan, but he remembered it very faintly that Sasuke needed several days to fully merge the two Mangekyou Sharingan pairs into the Eternal Mangekyou Sharingan.
And given the fact that Ryota is unconscious and will remain unconscious, the time taken for fusion may actually be longer than Sasuke's.
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