When a jinchuriki dies, their biju also dies and is reborn somewhere else in the world.
Bijus are therefore beings of great power that are also immortal.
It is common knowledge among ninjas who also know what a jinchuriki is.
It also reveals that those ninjas are very stupid.
Why? Let's look at the definition of chakra taught in ninja academies.
Chakra is a combination of the physical and spiritual energies of a living being, which once molded and in sufficient quantity, allow the release of the corresponding ninjutsu. Generally through seals made with hands.
Bijus are essentially huge masses of chakra with consciousness.
Therefore, each time they "die," the physical and spiritual energy that compose them should extinguish as a fire that runs out of fuel would.
Except it doesn't, and they appear somewhere else after a while.
Takara couldn't believe that NO ONE in ALL OF HISTORY realized what was wrong with this explanation; it was as if their neurons shrunk at this specific topic.
In nature, only living beings have chakra.
And where there is no chakra, the natural energy produced by the planet's ecosystem fills its void.
Now, bijus don't have natural energy or manipulate it; their hosts do. So, they can't "rebirth" into nature out of nowhere as conveniently believed.
Even if they turn into some kind of ghost, in simple terms, they need a fixed save point to reappear.
You would need physical energy to act as a "spark" to bring them back to life by combining it with the spiritual energy of their consciousness and enough "fuel" to restore them to their peak state.
And after much study and frustrated deliberation, Takara couldn't help but recall the Dofus from the world of Nox.
It was then that she realized a point people always ignore, even in the most imaginative fanfics of the series.
Before being born by Hagoromo's hand, weren't the tailed beasts in some kind of egg during their embryonic phase?
If that egg acted as a rebirth chamber, sustained somehow by seals at the level of the Sage of Six Paths or as a life form itself, then it made sense for the rebirth to happen.
The biju dies, and as if it were a clone, its memories and life experiences return to the egg while a new "it" begins to form and grow.
The egg consumes what it has been accumulating since the previous birth and provides a foundation for the rebirth of the tailed beast.
From there, it just needs a bit of time.
It will have the same appearance but just as aged, a new body based on the one that died.
Inherited memories generating the same personality, feelings, and customs.
If Hagoromo holds the title of father, those eggs would be the "mothers" of each biju.
And thanks to the chakra Gaara had been providing Takara, her noxins deciphered the frequency of the one-tailed beast's chakra, searching for matches in the desert of the Wind Country.
More specifically, in the areas where Shukaku historically appeared more often after its recorded deaths.
Takara was searching for Shukaku's egg.
Once in her hands, she could study it, and it would be much easier to find and seize the other eggs.
Oh, she also had the chakra of the nine-tails now, even if it was only half of a whole, she could also search for its egg.
With the nine eggs in her possession, she would no longer need to worry about capturing the jinchurikis alive. She could just kill them and wait for another biju to "mature" before harvesting from a special chamber filled to the brim with sealing techniques.
In fact, if she could block the memories from returning to the egg...