So far, except for Hyuga Kuroto's case–who only bypassed the 'Caged Bird' seal–there has never been a precedent of someone breaking the 'Caged Bird' Juinjutsu.
Not only other clans, but even the Hyuga Clan has always wondered how the Main family created such complex Juinjutsu, after all, the Hyuga Clan doesn't specialize in Fuinjutsu, nor is there any special Fuinjutsu knowledge passed on in the clan except the knowledge of 'Caged Bird' Juinjutsu.
So how did the Hyuga Clan create such a complex Juinjutsu?
Just think about it, not only the 'Caged Bird' Juinjutsu is impossible to break, but once someone is marked with it, it can be triggered from anywhere in the world, meaning that if you are marked with 'Caged Bird' no matter where you escape, the Patriarch and the elders of the main family can still control your fate while staying in the grounds of the Hyuga Clan.
This is simply absurd!
True, Hyuga Clan could have had one or two geniuses with extremely high attainments in Fuinjutsu, but this talent wouldn't be enough to create such a complex and impossible-to-break Juinjutsu, it just doesn't make any sense.
The figure has always been curious about this topic too, and only now did he get the answer. This Giant Tenseigan before him is the reason 'Caged Bird' Juinjutsu is impossible to break.
Of course, the 'Caged Bird' itself is a very complex Fuinjutsu, however, this Tenseigan is its core, and the entire seal revolves around it.
So we can say that rather than 'Caged Bird' Juinjutsu, this Tenseigan imprisons all the members of the Branch Family. So unless the core–i.e. this Tenseigan–breaks, it is impossible to break free from that cage.
What's more surprising is that while acting as the core of the 'Caged Bird' Juinjutsu, it also absorbs Chakra from the members of the Branch Family members once they are deceased and gets stronger. This explains why the Byakugan of the branch family members is destroyed after their death.
It's a pity that he never got the information about the declining population of the Hyuga Clan.
Although this Tenseigan has become stronger because of absorbing the Chakra of the deceased branch family members, this has also led to the decline in the population of the Hyuga Clan. After all, the total Chakra in the Shinobi World is limited.
Fortunately, the ancestors of the Hyuga Clan understood the problem caused by the Tenseigan and decided to seal it. If it had been someone greedy for power, he might have sacrificed the entire branch family to strengthen the Tenseigan and that would have led to the tragic situation of the Hyuga Clan. In that scenario, perhaps the Hyuga Clan would have been very similar to the current Otsutsuki Clan on the moon.
The only reason they didn't destroy the Giant Tenseigan and allowed it to exist, despite the problem it would bring to the Hyuga Clan is to protect the Hyuga Clan and deter the Otsutsuki Clan on the Moon.
The figure wasn't aware of the helplessness of ancestors when they created this Tenseigan, nor does he know the bleak fate that awaits the Hyuga Clan should this Tenseigan continue to exist. He only knew what he learnt from the Tenseigan and couldn't help but marvel at the piece of treasure. One more thing that especially makes him excited is that the person who becomes the master of this Tenseigan will be free of the effect of the 'Caged Bird' Juinjutsu, meaning that those elders of the main family won't be able to execute him!
The requirements for becoming the master of Tenseigan are quite simple. The person in question should be a descendant of the Hyuga Clan by blood, and, they must have Byakugan. As long as these two conditions are met, anyone can become the master of Tenseigan, and gain the highest authority over the 'Caged Bird' Juinjutsu as well.
Once someone gains the highest authority of the 'Caged Bird' they would no longer be vulnerable to 'Caged Bird'.
"I… I can finally be free?!" – Excited, he walked towards the Tenseigan and touched it.
Just as he was about to make himself the master of the Tenseigan, he was startled, and felt someone trying to watch him through the Tenseigan, what's more, shocking is that the person in question wasn't just one party, he was being spied on from two different places at the same time!
The figure trembled and quickly sealed the Tenseigan, preventing anyone from prying him, and muttered in fear, "This is not enough… I don't know who were those two and how much did they see… this location is no longer safe!"
…
Ancor Vantian
"It wasn't on the moon?" muttered Kuroto as he deactivated his Tenseigan.
Initially, Kuroto felt that his Tenseigan was resonating with the Giant Tenseigan on the moon, however, that's not the case at all, this time his Tenseigan resonated with a Tenseigan that is present in the Shinobi World.
"It seems that my previous speculations were indeed correct. In order to resist and deter the branch family of the Otsutsuki Clan on the moon, the ancestors of my clan did create a giant Tenseigan of their own."
He had made this hypothesis a few years back, and now his hypothesis has been proven correct.
"But still… I wonder who they are?" muttered Kuroto with a doubtful expression.
There are two possibilities. One, they are one of the members of the main family, and second, it's the traitor of the Hyuga Clan.
Kuroto can't deny the possibility that it might be someone from the main family of the Hyuga Clan, but he is still more inclined to the possibility that it is the traitor who found the Giant Tenseigan of the Hyuga Clan. After all, that guy stole very valuable ancient books from the forbidden section of the library, so there is a strong chance that he was able to find something in those books.
"But if it's the traitor… how come he suddenly made a move after being silent for so long?" muttered Kuroto with a doubtful expression.
The last time the traitor did anything was several years ago. At that time, Kuroto was vigilant against the traitor and waited for that guy's next move. However, Kuroto continued to wait and the traitor never acted, few years passed and Kuroto's vigilance dropped.
Who would have thought that after a few years, the traitor would act again? And this time, the traitor really did something amazing, even Kuroto couldn't help but admire him.
Knowing that the Giant Tenseigan of the Hyuga Clan has finally made its appearance in the Shinobi World, Kuroto obviously couldn't sit still, the Giant Tenseigan is both a need and a want, and he plans to get it.
Although the resonance with that Giant Tenseigan didn't last very long, Kuroto was able to determine the location, and he was going to go there. If at all possible, he would like to immediately take control of it.
Judging from various signs, the other party has just found the Giant Tenseigan, so they didn't know that it could resonate with other Tenseigan, and hence, accidentally allowed Kuroto to spy on them, this won't happen once again, therefore, it would be best if Kuroto can immediately get his hands on that Giant Tenseigan and doesn't give that person any opportunity to master it.
With these thoughts in his mind, Kuroto draped himself with the Yama disguise and flew off Ancor Vantian in a hurry.
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