Have you heard of an rpg game back during the playstation 1 era called The Legend of Dragoon ? and did you know that Kishi's relative who works in the video game industry was involved in its production? (Yoshiko Kishimoto)
The Divine Tree in LoD was the source of all life in the world, but it will eventually give birth to a Fruit that is to become the God of Destruction: The Virage Embryo that will bring about the world's end, the people in ancient times, to avoid extinction, separated the God of Destruction's body from its soul, and hurled that body into the sky which became the Moon:
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And according to the ingame legends, the imminent return of this God of Destruction is heralded by the Moon turning crimson red.
A monarch of ages past: Emperor Diaz, revived himself in the present time, to initiate his plan to take the soul of the God of Destruction (reincarnated into a young girl named Shana) and reunite it with its body, to use the power of the Virage Embryo to create a Utopian World, ultimately the Emperor failed, and the God of Destruction was reborn to act according to its nature: The Destruction of the World:
[video=youtube;O_up0vsVaAw]http://www.youtube.com/watch?v=O_up0vsVaAw[/video]
Oh wow, it makes me wonder where (if anywhere) the makers of the game got their storyline.
The similarities are uncanny. What makes this all so interesting is orchimaru, well really, orochimaru's reaction to seeing spiral zetsu; without that there is really nothing to talk about. Simply by showing concern Oro has placed a huge amount of significance in spiral zetsu. Now is it as trivial as simply taking over yamatos body or as complex as a major role player in the story? I lean towards the latter.