After Takuno experimented with his various Ninjutsu using his current body, a look of increasing satisfaction appeared on his face.
Not only did the number of times he could use them increase, but their power also grew significantly.
It was like the final Six Paths Sage Naruto and Six Paths Sage Sasuke; Six Paths Sage Naruto didn't have many mechanics, yet his damage was ridiculously high—it had a certain numerical beauty!
Takuno didn't find this strange at all; for the same Ninjutsu, with unchanged proficiency, the greater the amount of Chakra contained within, the greater its power naturally.
It was just a pity that Ninjutsu itself had an upper limit to its power; adding more Chakra beyond that limit was useless.
After completing his experiments, Takuno approached another cultivation tank, looking at the Kekkei Genkai he had collected during the Second and Third Great Ninja Wars. If he had the time, he would have wanted to fuse them before returning to Konoha.
However, it would take too long, and he might miss the time Rin Nohara was captured.
To be safe, he had to experiment with each added Kekkei Genkai first, ensuring its safety before completing the fusion himself.
One must know that for the final five Kekkei Genkai, Hiruko even waited for so many years until the three conditions of heaven, earth, and man were met.
This shows that with each additional Kekkei Genkai, the difficulty of fusion increases exponentially.
Therefore, safely experimenting with the fusion of a second Kekkei Genkai would inevitably take even longer, and he probably didn't have the time to conduct that experiment.
Takuno looked at the materials he had prepared, the most important of which contained a one-tomoe Sharingan.
That's right, the second Kekkei Genkai he was preparing for was the Uchiha bloodline.
And this material was arguably the only Uchiha member he had obtained who could awaken the Sharingan, and it had only awakened a one-tomoe.
However, he had collected quite a few Uchiha Clan members who hadn't awakened the Sharingan, and collecting them wasn't too difficult.
After all, he was specialized in Sealing Jutsu, and after these Kekkei Genkai-possessing ninja died on the battlefield, they naturally needed to be sealed and retrieved by them.
He simply used a trick, replacing them with fake Uchiha members, and thus obtained these materials.
But the problem was, it was extremely difficult for him to obtain materials with the Sharingan. Even Uchiha Clan members with just a one-tomoe Sharingan were meticulously recorded, and no matter how careless the Uchiha might be, they would still check later.
Therefore, none of the recorded Uchiha members with the Sharingan could be his option. He only managed to obtain this one with a one-tomoe Sharingan because Takuno confirmed that it was temporarily awakened just before death.
As is well known, the Uchiha Clan's Sharingan awakening relies on strong emotional stimulation, and the stimulation of a life-or-death moment is indeed a strong one, so awakening at that time is still considered normal.
But even so, those who could awaken the Sharingan just before death were still very few.
In reality, he could accept it even without the Sharingan.
After all, the Sharingan is not like other Kekkei Genkai; it can be awakened later, and even if it's not awakened, he can transplant a Sharingan through other means.
However, being able to awaken it himself would naturally be better.
Suddenly, Takuno seemed to think of something and became a little curious: if he didn't transplant the Uchiha bloodline, could he freely activate and deactivate the Sharingan by only transplanting the Uzumaki bloodline?
After all, although the Uzumaki bloodline cannot awaken the Sharingan, it shares a common origin with the Uchiha bloodline, so it might be possible to freely activate and deactivate it.
Unfortunately, this was not verified in the original work. However, Danzo Shimura not only transplanted the Sharingan but also the First Hokage's cells, yet he still seemed unable to freely activate and deactivate the Sharingan.
Thinking this way, the Uzumaki bloodline, as a branch of the Senju bloodline, probably couldn't either.
So... should he try transplanting it later to experiment? If successful, wouldn't it save a fusion slot?
After a moment of thought, Takuno shook his head, dismissing his idea.
Because the Uchiha bloodline is still essential. The Six Paths Sage' bloodline was divided into the Sage Body and the Sage Eye, so only when these two bloodlines are combined is it the most perfect state, just as Madara also fused Hashirama cells, which was probably one of the conditions for him to awaken the Rinnegan.
Therefore, both the Sage Body bloodline and the Sage Eye bloodline are necessary. If that's the case, then there's no need to transplant the Sharingan in advance.
Takuno then looked at another material, the Hyuga bloodline.
However, Takuno was hesitating whether to fuse the Hyuga bloodline he had on hand, because all the ones he obtained were from the branch family.
In terms of bloodline alone, due to typical in-clan marriages, the Hyuga Branch Family is not much inferior to the Main Family. But the problem is, Takuno doesn't know if the Caged Bird Seal on Hyuga Branch Family members remains after death.
Because in the original work, Hyūga Neji's Caged Bird Seal did disappear after his death, but then another problem arises: Hyuga Hizashi, resurrected by Edo Tensei, still had the Caged Bird Seal on his forehead.
Although Hyuga Hiashi didn't use the Caged Bird Seal, it couldn't be confirmed whether his Caged Bird Seal was fake, or if it was due to brotherly affection that he was unwilling to use the Caged Bird Seal on Hyuga Hizashi.
As for Hyuga Hiashi having used the Caged Bird Seal on Hyuga Hizashi before, that is true, and Hyuga Hiashi did nothing wrong. Hyuga Hizashi had murderous intent towards his own daughter; merely punishing him with the Caged Bird Seal and no other punishment, what more could be done?
This made Takuno a bit hesitant; if fusing the Hyuga bloodline brought the Caged Bird Seal along, it would be troublesome.
But Takuno was somewhat unwilling to give up the Hyuga bloodline, as it concerned the possibility of the Tenseigan.
The Tenseigan is an existence in no way inferior to the Rinnegan!
Takuno looked at the forehead of the material, which had no curse mark, and pondered what to do.
The Hyuga Main Family bloodline was out of the question; their protection of the Main Family bloodline was outrageous. Although there had been Hyuga Main Family members who died on the battlefield, they absolutely wouldn't let outsiders get close to the Hyuga Main Family bloodline!
So, first, use the materials at hand to conduct an experiment to see if the fused material will inherit the Caged Bird Seal in the future?
Or, perhaps, when the technique matures, change the location of the Caged Bird Seal. He doesn't need their Byakugan; he only needs the Hyuga bloodline.
And even if it's not changed, there would be no Byakugan, because at the moment of their death, their brain and Byakugan were already destroyed by the Caged Bird Seal.
However, both methods require time for verification.
As for the second method... it seems it can start now.
After Takuno's eyes flickered, he once again used the Chimera Technique to fuse several materials with the Hyuga bloodline, then sealed and restrained them, throwing them back in.
Seeing that none of the materials showed the Caged Bird Seal, now, as long as enough time passes and these materials still don't show the Caged Bird Seal, it should be proven.
He wasn't in a hurry, after all, it would take a long time to obtain the fourth and fifth Bloodlines he wanted to fuse.
This time would be sufficient for verification!