I did read it all, and it doesn't make sense from the moment when you say; We can assume..
Kudos for the effort, but chronologicly it's a major fail.
If you would apply this logic to, let's say the other Jinchuuriki,..
it would be like saying that, years after Naruto and Kurama separated, that Kurama would gradually transform into it's former host, Naruto, who is also centuries younger then Kurama, if Kurama were to be controlled by someone like Madara.
Can you see why it doesn't make any sense, if you re-apply this same logic of yours to the Juubi?
(And about Kakashi,.. Kakashi is Japanese for Scarecrow, it's a joke)
Good grief, you've got to be kidding me.The sage even divided Juubi into the nine tailed beasts and sent its' empty husk into the moon, and now the sage will come back as the monster he defeated? doesn't make sense.
I doubt he'd have only leave behind 1 solution to the Jubi outbreak, it's possible that his spirit would only appear once the Jubi reaches a certain state of transformation, just like Minato set his spirit to appear right after the complete Jubi was restored.The OP is forgetting that the sage divided the Juubi into the nine tailed beasts before dying, that was his solution.
Good grief, you've got to be kidding me.
Let me try and explain this to you.
Juubi goes on rampage.
Juubi meets Sage.
Sage defeats Juubi, becomes host.
Sage is about to die.
Sage is aware Juubi will be released when he dies.
Sage makes moon.
Sage is also aware of the possibility of the Juubi one day becoming freed, and nobody will be able to stop it.
Sage comes to the solution of sealing himself into the Juubi so that the Juubi will transform into him eventually, he will take control of the consiensness, and seal him and it back into the moon.
Day is saved.
Get it now? The reason your Naruto and Kurama thing doesn't make sense is because for 1, Naruto and Kurama are friends... he has no reason to want to seal himself in it because he won't be sealing Kurama when he dies.
2, Kurama is through with his rampages, Naruto reached his heart now. They're on good terms.
Ive been saying that Rikudo sennin did the same thing as Minato did to Naruto. He prepared for the case where it escaped.
I doubt he'd have only leave behind 1 solution to the Jubi outbreak, it's possible that his spirit would only appear once the Jubi reaches a certain state of transformation, just like Minato set his spirit to appear right after the complete Jubi was restored.