The real Madara also mentioned that Izuna had died, and he would have no reason to lie about it given the context.
Yes, and he probably did die. However, that doesn't mean he stayed dead. Right now we are at a point in the Manga where roughly half of all the important ninja characters have been brought back to life at least one time or another.
Madara is a very powerful ninja. Madara knows techniques that many others don't know. I doubt it would be a stretch for him to bring Izuna back to life. I doubt it would be a stretch for him to bring ANYONE back to life, ESPECIALLY when he possessed the Rinnegan at some point before he died.
Like I said before, I left out a great many details about my theory, because it's a lot of information, and I am not trying to write a book about it.
- We know that Orochimaru was experimenting on abducted children from Konoha, trying to fuse Hashirama's DNA with them. Yamato is the ONLY surviving child from those experiments (that we know of).
- Orochimaru had to get that DNA from somewhere.
- We know that Zetsu is the result of some sort of experiment/technique using Hashirama's DNA.
- It's entirely possible that Madara awakened the Rinnegan long before he fought Hashirama, and that fighting Hashirama was to secure the DNA to create a new body to store his dead brother's soul in. That could be the secret to the So6Ps 'creation' power, using the Rinnegan, Susanoo, and wood release to create life.
- If you pay close attention to the story, Tobi says he's the one who cultured Hashirama's cells to create the army of Zetsus. He could be lying, but it's entirely possible. If Madara died after his battle with Hashirama, he could have used what was left of his power to create Tobi's body and return Izuna's soul to it, much like Nagato did for the people of Konoha.
- Tobi could have tried doing the same thing to revive his brother, unsuccessfully. The result of his failed attempt to bring back Madara could be Zetsu.
Can anyone tell me why Kabuto doesn't undo Itachi's edo tensei in order to kill him ?
It seems as though he can't do it at all, because if he could, he could just unsummon him as well. It appears as though Itachi is no longer bound to Kabuto's technique, and the only way he's going anywhere is by releasing Edo Tensei himself.
broky is you still belive that tobi give nagato the rannegan you has to be the king moron
If you believe that Nagato awoke the Rinnegan natrually, you're a moron. You have to be an Uchiha to awaken Rinnegan. It goes Uchiha > Sharingan > Mangekyo Sharingan > Eternal Mangekyo Sharingan > Rinnegan.
We know that Nagato was given the Rinnegan because it was never deactivated once he got it. One of the Rinnegan's ocular powers is the ability to produce more Rinnegan, which we have seen from both Nagato and Tobi (their minions all had Rinnegan too).
It's unclear whether or not Tobi gave Nagato the actual Rinnegan from Madara or created new Rinnegan out of Nagato's eyes, but it IS clear why he gave it to him. Nagato's family was killed by Konoha ninja, which sparked hatred towards Konoha within Nagato. Nagato was meant to be a pawn to control in a war against Konoha.
- Tobi gets mad @ Nagato because he dies using the Rebirth technique to revive the people of Konoha, and Tobi says 'Nagato was supposed to use that technique for me.' I'm pretty positive that he was going to use it to revive Madara or move Izuna's soul back into his real body, maybe both.