Then naruto is a fox spirit with a fox spirit inside of him?
Then naruto is a fox spirit with a fox spirit inside of him?
So in the midst of combat with the Kyubi, Minato...
1) Summons the death god.
2) Captures the Kyubi's soul.
3) Redirects the vessel for the soul to Naruto.
4) Tailors the seal to leak chakra in a controlled manner to Naruto for his protection.
5) Injects some of his own chakra into the seal to trigger a message when the seal is weakened.
6) Injects some of Kurina's chakra into the seal to trigger when Naruto is battling Kyubi.
I don't think we'll ever physically see a flashback of this sealing process, as it has become far too ridiculous at this point.
10/4/04 - 8/20/07
When man invented the bicycle he reached the peak of his attainments. Here was a machine of precision and balance for the convenience of man. And (unlike subsequent inventions for man's convenience) the more he used it, the fitter his body became. Here, for once, was a product of man's brain that was entirely beneficial to those who used it, and of no harm or irritation to others. Progress should have stopped when man invented the bicycle. ~Elizabeth West, Hovel in theHills