So I got some time finally...And I posting one theory I found some time ago on MangaHelpers....
--------------------------------------------------------------------------
This could be farfetched but read and enjoy.........
Here it is:-
1) The kyuubi called the Uchiha clan (and the chakra of their Sharingan) cursed, even more sinister than his own chakra(spl. Sasuke).
2) Minato separated the yin and yang chakra of the kyuubi upon the sealing into Naruto. The yin he left with his son, the yang was sealed away.
Read this theory for more info:-
3) Madara and his bro were the first Uchiha's to unlock the MS. Thus it is reasonable to assume that before this event there was no relation between the Uchiha clan and the natural catastrophe known as the kyuubi.
My theory about yin and yang chakra is similar to that of the philosophy from which they spring. They are opposing, yet complementary "natures" of chakra which every shinobi possesses. Certain jutsu can be performed using them together with different amounts of each.
To a lesser extent, the yin and yang chakra also represent the good and evil that can be found within each shinobi as well. For the most part they tend to remain in a state of balance within the average person.
In relation to Madara:
The manga implied that Madara and his brother (or perhaps just Madara himself) killed or spilled blood to attain the MS. The breaking of bonds represented by that act changed one or both of them on a spiritual level. The yin and yang that was normally balanced within each individual shifted dramatically. They gained power and techniques but at the risk of their spiritual/physical health as a result of the imbalance. Thus, Madara began to go blind.
Yet it wasn't so with his brother. Somehow his brother had managed to maintain the balance within himself and within his eyes, so the transference of eyes from one to the other restored the balance within Madara to a degree. The reason I say that the regular MS is based off of "evil" chakra is because of what we've seen from it so far.
1) A ninjutsu from hell that burns for 7 days
2) A genjutsu that tortures one for 72 hours
3) A spirit of unknown origins. Who knows what Susano'o represents, or it's effect on the user?
For the most part these techniques have been dark natured, leading me to believe that they came about as a result of the imbalance created by the killing of one's best friend.
In relation to kyuubi:
A natural occurence said to occur whenever human malice has been allowed to foster. Or you could say where the evil side of people's spirits reigned. I believe that the kyuubi was a creature with a largely imbalanced chakra as well, largely leaning towards the yin. It was attracted to evil because it itself was evil. That is why I believe that Madara was able to master and control it. As evil as kyuubi was, Madara was even more evil. Thus his yang chakra overcame the fox's and he learned how to control it. Remember, that all possess both even if one is largely overshadowing the other.
What does this mean for Naruto? This means that Madara can't touch him. If the light side of the chakra has been sealed inside of him and the dark side is beyond Madara's reach then Madara effectively has his hands tied regarding the kyuubi. Minato knew this, and Madara knows this as well. Thus, the reason for Sasuke.
I think he needs Sasuke because of the potential that lies within his eyes. If Madara truly is a shell of his former self like Itachi implied then his eyes have weakened, possibly past the point of being able to control the fox. But Sasuke's haven't. His yang chakra was powerful enough to suppress the kyuubi within Naruto to some degree, without the MS to aid him. So I think that Madara will end up using Sasuke to go after Naruto. With someone who can suppress the kyuubi's yang chakra while still strong enough to hang with a normal Naruto, Naruto will have no choice but to draw on the yin chakra of the fox wherever it may be.
Thus, we come to Naruto's mystery jutsu. The most likely purpose for it is to fuse the two chakra within himself to grant it all of its power. His own chakra would theoretically suppress the evil inherent in fox, preventing is from affecting him adversely. If Madara can get Naruto to do this, then the kyuubi is within his grasp again through Sasuke. The AK was formed so that Madara would have a way of sealing the kyuubi for use without having to use his eyes since they'd grown weaker. If the fully formed kyuubi is sealed within the statue, Madara will not only have control over the fox but over all the bijuu in the world as well. Diabolical, is it not?
I think that parts of my theory are also the true reason why Sasuke was able to escape Tsukyomi. I theorized on something like this when that chapter came out, but my thoughts weren't as organized as they are now.
Facts:
1) Chakra is known to convey strong negative emotions that other shinobi can sense (i.e. bloodlust, hatred)
2) The chakra of the shinobi when the CS is activated on any level changes. Negative emotions become more prominent, stronger. When Sasuke first activated the CS Ino said that his chakra was darker, more fierce than she remembered from the academy. Even Neji was impressed with what Sasuke was giving off. Shika was so scared that he got his teammates and got out of dodge when he saw Sasuke wake up.
My addendum theory is this: before, I theorized that the reason why Sasuke was able to break out was truly because of his hatred. I said that his hatred, amplified by the CS, changed the "feel" of the chakra that Itachi was manipulating. Because Itachi was no longer manipulating the same type of chakra that he was before, Sasuke was able to break out.
Now I'm changing this slightly. I'm going to go with the dark chakra approach. Going off of what I said about the MS and dark chakra in the first theory, Itachi must have been full of it. The balance of his yin and yang chakra was tipped largely to the dark natured chakra. But Sasuke, upon activating the CS, had his chakra imbalanced to an even greater degree. The same way that Madara was able to control the fox because his chakra was darker, Sasuke was able to break out because the nature of his chakra was momentarily darker.
The whole theme of dark natured chakra and control over others can also extend further as well. It could explain how Oro was able to control anyone who had his CS, despite the fact that he wasn't the original source. And how Itachi was able to control the time within Tsukyomi to such an amazing degree.
More Recent Theories (Late '08)
Yin-Yang role
Remember in my post in April how I said the whole yin-yang thing was based on good and evil? Well, like Denzel said "Unlearn all that bull****" Throw it out. I'll go with a more simple, sensible approach. But like always, we'll state what we know.
1) Chakra is formed from combining spiritual ability with stamina
2) Spiritual ability is nourished/strengthened through long hours of meditation (seen in the random panels where we see Naruto meditating with a book on his head, or the lessons the genin learned in Naruto's flashback with the leaves on their heads to increase concentration).
My somewhat new theory is that yin and yang are spiritual aspects that every shinobi has. Most shinobi ninjutsu use these two in balance with each other, except for very special fields. You guessed it. Genjutsu, medical jutsu, and clan techniques are the exceptions to the rule.
These exceptions operate by using yin and yang in different proportions to each other. Knowing the seals is not enough to learn or copy these techniques, even possibly with the Sharingan. One must train their spiritual aspect to deviate from it's balanced state in order to use these techniques. This is possibly why very good chakra control is needed for some of these.
*Mini-theory (you'll be seeing quite a few of these)-This is possibly why Lee is unable to use Nin- or Genjutsu. He can combine his spiritual and physical sides to create chakra, but a spiritual deficiency or inability prevents him from molding it, which is needed for nin- and genjutsu. But, he is free to direct it through his body which is why he can use the gates and walk on water. No molding necessary, just re-direction.
Now, what happens when this balance is disrupted drastically, and not just temporarily for a jutsu? Bad things, my friend. Bad things.
Naruto and Madara/Itachi are prime examples of this within my theory. Part of this stems from my previous theory behind why Madara and Itachi, and now Sasuke went blind (you might need to read the first few posts in this theory if you haven't already).
Now, we know that
1) the kyuubi's yin chakra is sealed within Naruto (or yang, I forget which and get them mixed up frequently).
2) This separation was done on purpose by Yondaime, who did nothing without a reason.
So my theory is that normally, Naruto is in balance spiritually. The seal allowed the kyuubi chakra to leak through and mix with his own chakra from a very young age. While the seal was still strong, this constant mixing strengthened Naruto's chakra, making more resilient and able to resist/restrain the kyuubi chakra. Much like how I believe the CS allowed Sasuke to overcome and restrain Oro, but that's for another day.
But when the kyuubi chakra is let out in a huge quantity, Naruto's balance shifts dramatically, toward whatever it was Yondaime sealed in him (don't feel like looking it up right now).
Humans aren't meant to have their chakra shift so far to one side. Thus, Naruto loses control gradually as the balance shifts more. Also, his body is harmed as the quantity of the chakra increases.
Didn't you ever wonder why Killerbee could go up to an eight-tail shroud without any visibly negative effects? It's because both his and the Hachibi's chakra were balanced. Thus, no ill effects until his skin started peeling, and that was just because of the transformation.
So why did Yondaime separate the kyuubi's chakra? There are a few possibilities for this.
1) He didn't want a whole kyuubi in Naruto while Madara was still walking around out there. A split kyuubi could possibly put a hitch in Madara's plans and keep the village safe at the same time with Naruto as its protector.
2) Simple expediency. Sealing the entire kyuubi in Naruto was an impossibility so Minato split in in half to make sealing it easier.
3) Something had to go in the Shinigami's stomach. While Minato would've liked to seal the whole fox into Naruto it just wasn't possible. So he split the kyuubi, half to satisfy the Shinigami and half to pass on the Konoha's future protector, Naruto.
Nagato's story
Why is Pein the way he is? Well, I went back to Chapter 373 I believe, "The Student-Teacher Era" in my re-reading of Part 2. And I came across some hints I believe point to what could've happened to turn Nagato into Pein.
These are the pages most relevant to the discussion, in approximately the order I'll be addressing them. Additional info can be found in more of the Jiraiya v. Pein fight, especially in Pein's villain monologue.
We know that after Jiraiya left the three, they went around making a name for themselves. Presumably they fought for peace in the Rain Village and like Jiraiya said anyone who fought them ended up dead. They were uber. But someone more uber than them came along, and offed Yahiko.
Nagato, upon seeing this, probably went ape**** like he did when he was a kid. He went after the person and, in all sense of the word, delivered judgment. But in the end it was too late for his friend whom he'd sworn to protect. He finally felt the pain that Yahiko was talking about. But he also realized that while going after Yahiko's killer that he felt no guilt at killing him. No remorse, no hesitation. Just...judgment. He delivered unto the person the pain he felt when Yahiko died, and thus evened the scales. This was the turning point.
From that point on Nagato killed all emotion in his heart. It became a Heart of Blades, killing all human feelings he had. The pain of killing those emotions is what allowed him to ascend past the mere level of humanity (reading his conversation with Jiraiya closely makes this theory make a lot more sense, trust me) to become, in his own eyes, a god.
He kept Yahiko's body (which is dead) as one of his entourage to remind him of this daily. It became the Deva Body because much of what Nagato believes in was from Yahiko's philosophy. And the abilities he gave the Deva body were specifically picked so the body remained untouched.
Why else was Pein so set on not being touched while in the Deva body? It's abilities could've aided greatly in the fight against Jiraiya except it probably would've gotten mangled. He could've let Kakashi land that last Raikiri after the chains snapped then allowed the Asura Body to come in behind Kakashi and finish him. With how fast it came in neither Chouji or Chouza could've caught it in time to stop it from finishing off Kakashi. But Pein didn't go with this plan, and as a result the fight went on longer than it had to.
Like many have suggested, Nagato, wherever he is, has a certain fondness for the Deva Body which is why he makes sure that nothing touches it at all.
Madara, Suigetsu, and Kisame
Madara set into motion plans within plans I believe. He ordered Suigetsu to get allow himself to be captured by Oro because he knew the Hoozuki clan special abilities would interest Oro (off of what the Databook says it seems like Suigetsu's special ability is family related and not Oro-related).
*Mini-theory-Oro might've gotten Suigetsu in the hopes of possessing him then possessing his body. With Suigetsu's special ability to turn into water Oro could enter into anyone he further wanted to possess, in other words a "double-possession", which would allow him to stay in another person's body indefinitely through Suigetsu. But, it would seem that that didn't pan out.
Or, he could've just used Suigetsu to figure out a way to perfect his Throw-Up No Jutsus, which defy all laws of physics by spitting out an entire body from another. Pick whichever one seems cooler to you *end mini-theory*
So, Suigetsu was the mole within Oro's organization, at first just so Madara had an eye on him. But once Madara found out Oro wanted Sasuke he left instructions with Suigetsu in the eventuality that Sasuke rebelled against Oro. Suigetsu could also have been there to stop Itachi from going against Madara. The knife at Itachi's throat as it were since Suigetsu was undoubtedly, for a period of time, stronger than Sasuke during the TS.
Madara was also the one to enact the "Bloody Mist" chuunin trials. The whole "survival of the fittest" fits right in with his whole warlike mantra, and people like Zabuza and Kisame would be his favorites.
But once the village experienced the debacle that was Zabuza, Madara and his practices fell out of favor. And, by popular vote, Madara was kicked off the island (or at least out of his position). Since plans had started to pick up regarding bijuu capture Madara was content to let the position go and start becoming more directly involved with Akatsuki affairs. This could be the reason why when Kisame recognized Madara he stopped himself from completing the "Mizukage-sama" and just stopped at "Mizukage". Madara no longer had that position.
And the mask fools everyone, since Suigetsu didn't even recognize Madara when Taka and Akatsuki were discussing their plans. It seems like Madara is trying to avoid Sasuke putting 2+2 together to get 5 so he's keeping his identity from Suigetsu. Otherwise, why not reveal himself in front of Taka and Kisame to solidify his power?
Danzou *dunh dunh DUNH*
This is, in my opinion, my coolest theory in this bunch of theories. It makes a strange kind of sense despite how random, and possibly unlikely, it is. Yet, I present it nontheless.
Madara is a Class-A prick. There's no denying that. But the possibility still remains that he was telling the complete truth to Sasuke as he knew it, including the summoning of the kyuubi. So if Madara didn't summon the fox who did?
I'm guessing you know where I'm going with this since the post has a title, but before you start to flame me I'm not on that BS about him being Obito or Tobi or Tobito or Naruto's mom. No, I'm thinking that Danzou is a Senju. And I don't mean a pale imitation Senju like Tsunade or Tobirama, but a genuine, Mokuton-having Senju.
Why would he keep his abilities secret while growing up? I have no idea. Maybe it was the widespread dislike/prejudice for Kekkei Genkai. Maybe he just wanted a trump card. Or maybe a few people know about his ability, a very small number. Either way the word "Ne" or Root doesn't just represent his organization which is meant to be the group that holds the Tree that is Konoha up, but how he sees himself.
Danzou, after seeing the ill-will the Uchiha were building towards Konoha, decided to frame them. We've seen that he's one for pre-emptive strike, and that's just what he did. He controlled the kyuubi during the attack and accepted the village's losses as collateral damage. Whatever number they lost would be less than if the Uchiha rose in revolt against the village so the end justified the means in his eyes. Once that was done he was among the first to point fingers to and condemn the Uchiha.
Why Madara Needs Sasuke
I still think that Madara needs Naruto for something, though what it is I'm not exactly sure.
I'm thinking that upon gaining the MS and seeking to control the kyuubi Madara made some kind of contract that linked all future Uchihas to the kyuubi. It is this contract that is behind the sinister nature of their chakra, since it is linked to the most sinister creature alive. What the nature of this link is I'm not sure yet, but there was a reason why kyuubi told Sasuke he would regret killing Naruto and I'm sure this theory hints at it in some way.
Back on topic I think that Madara picked Sasuke specifically to aim him towards Konoha for one prize: Naruto. How does he know the nature of their relationship you ask? He had a video recording of the whole fight through Zetsu so he knows the entire angst filled history between the two. He also knows that Sasuke is the one person he can send to Konoha that Naruto won't kill. Everyone else is fair game for the kyuubi jinchuuriki and Madara is to the point where he can't risk the people he needs.
Why did he send Pein there, you might be asking? Read the last sentence in the last paragraph again and you'll see why he directed Pein into that deathtrap called Konoha. For the sake of making this clearer, he most likely sent Pein to Konoha to either die or get severely weakened. With all eight bijuu in his control (at least until Killerbee rickrolled Akatsuki) Pein is now expendable.
continued in next post
--------------------------------------------------------------------------
This could be farfetched but read and enjoy.........
Here it is:-
1) The kyuubi called the Uchiha clan (and the chakra of their Sharingan) cursed, even more sinister than his own chakra(spl. Sasuke).
2) Minato separated the yin and yang chakra of the kyuubi upon the sealing into Naruto. The yin he left with his son, the yang was sealed away.
Read this theory for more info:-
You must be registered for see links
3) Madara and his bro were the first Uchiha's to unlock the MS. Thus it is reasonable to assume that before this event there was no relation between the Uchiha clan and the natural catastrophe known as the kyuubi.
My theory about yin and yang chakra is similar to that of the philosophy from which they spring. They are opposing, yet complementary "natures" of chakra which every shinobi possesses. Certain jutsu can be performed using them together with different amounts of each.
To a lesser extent, the yin and yang chakra also represent the good and evil that can be found within each shinobi as well. For the most part they tend to remain in a state of balance within the average person.
In relation to Madara:
The manga implied that Madara and his brother (or perhaps just Madara himself) killed or spilled blood to attain the MS. The breaking of bonds represented by that act changed one or both of them on a spiritual level. The yin and yang that was normally balanced within each individual shifted dramatically. They gained power and techniques but at the risk of their spiritual/physical health as a result of the imbalance. Thus, Madara began to go blind.
Yet it wasn't so with his brother. Somehow his brother had managed to maintain the balance within himself and within his eyes, so the transference of eyes from one to the other restored the balance within Madara to a degree. The reason I say that the regular MS is based off of "evil" chakra is because of what we've seen from it so far.
1) A ninjutsu from hell that burns for 7 days
2) A genjutsu that tortures one for 72 hours
3) A spirit of unknown origins. Who knows what Susano'o represents, or it's effect on the user?
For the most part these techniques have been dark natured, leading me to believe that they came about as a result of the imbalance created by the killing of one's best friend.
In relation to kyuubi:
A natural occurence said to occur whenever human malice has been allowed to foster. Or you could say where the evil side of people's spirits reigned. I believe that the kyuubi was a creature with a largely imbalanced chakra as well, largely leaning towards the yin. It was attracted to evil because it itself was evil. That is why I believe that Madara was able to master and control it. As evil as kyuubi was, Madara was even more evil. Thus his yang chakra overcame the fox's and he learned how to control it. Remember, that all possess both even if one is largely overshadowing the other.
What does this mean for Naruto? This means that Madara can't touch him. If the light side of the chakra has been sealed inside of him and the dark side is beyond Madara's reach then Madara effectively has his hands tied regarding the kyuubi. Minato knew this, and Madara knows this as well. Thus, the reason for Sasuke.
I think he needs Sasuke because of the potential that lies within his eyes. If Madara truly is a shell of his former self like Itachi implied then his eyes have weakened, possibly past the point of being able to control the fox. But Sasuke's haven't. His yang chakra was powerful enough to suppress the kyuubi within Naruto to some degree, without the MS to aid him. So I think that Madara will end up using Sasuke to go after Naruto. With someone who can suppress the kyuubi's yang chakra while still strong enough to hang with a normal Naruto, Naruto will have no choice but to draw on the yin chakra of the fox wherever it may be.
Thus, we come to Naruto's mystery jutsu. The most likely purpose for it is to fuse the two chakra within himself to grant it all of its power. His own chakra would theoretically suppress the evil inherent in fox, preventing is from affecting him adversely. If Madara can get Naruto to do this, then the kyuubi is within his grasp again through Sasuke. The AK was formed so that Madara would have a way of sealing the kyuubi for use without having to use his eyes since they'd grown weaker. If the fully formed kyuubi is sealed within the statue, Madara will not only have control over the fox but over all the bijuu in the world as well. Diabolical, is it not?
I think that parts of my theory are also the true reason why Sasuke was able to escape Tsukyomi. I theorized on something like this when that chapter came out, but my thoughts weren't as organized as they are now.
Facts:
1) Chakra is known to convey strong negative emotions that other shinobi can sense (i.e. bloodlust, hatred)
2) The chakra of the shinobi when the CS is activated on any level changes. Negative emotions become more prominent, stronger. When Sasuke first activated the CS Ino said that his chakra was darker, more fierce than she remembered from the academy. Even Neji was impressed with what Sasuke was giving off. Shika was so scared that he got his teammates and got out of dodge when he saw Sasuke wake up.
My addendum theory is this: before, I theorized that the reason why Sasuke was able to break out was truly because of his hatred. I said that his hatred, amplified by the CS, changed the "feel" of the chakra that Itachi was manipulating. Because Itachi was no longer manipulating the same type of chakra that he was before, Sasuke was able to break out.
Now I'm changing this slightly. I'm going to go with the dark chakra approach. Going off of what I said about the MS and dark chakra in the first theory, Itachi must have been full of it. The balance of his yin and yang chakra was tipped largely to the dark natured chakra. But Sasuke, upon activating the CS, had his chakra imbalanced to an even greater degree. The same way that Madara was able to control the fox because his chakra was darker, Sasuke was able to break out because the nature of his chakra was momentarily darker.
The whole theme of dark natured chakra and control over others can also extend further as well. It could explain how Oro was able to control anyone who had his CS, despite the fact that he wasn't the original source. And how Itachi was able to control the time within Tsukyomi to such an amazing degree.
More Recent Theories (Late '08)
Yin-Yang role
Remember in my post in April how I said the whole yin-yang thing was based on good and evil? Well, like Denzel said "Unlearn all that bull****" Throw it out. I'll go with a more simple, sensible approach. But like always, we'll state what we know.
1) Chakra is formed from combining spiritual ability with stamina
2) Spiritual ability is nourished/strengthened through long hours of meditation (seen in the random panels where we see Naruto meditating with a book on his head, or the lessons the genin learned in Naruto's flashback with the leaves on their heads to increase concentration).
My somewhat new theory is that yin and yang are spiritual aspects that every shinobi has. Most shinobi ninjutsu use these two in balance with each other, except for very special fields. You guessed it. Genjutsu, medical jutsu, and clan techniques are the exceptions to the rule.
These exceptions operate by using yin and yang in different proportions to each other. Knowing the seals is not enough to learn or copy these techniques, even possibly with the Sharingan. One must train their spiritual aspect to deviate from it's balanced state in order to use these techniques. This is possibly why very good chakra control is needed for some of these.
*Mini-theory (you'll be seeing quite a few of these)-This is possibly why Lee is unable to use Nin- or Genjutsu. He can combine his spiritual and physical sides to create chakra, but a spiritual deficiency or inability prevents him from molding it, which is needed for nin- and genjutsu. But, he is free to direct it through his body which is why he can use the gates and walk on water. No molding necessary, just re-direction.
Now, what happens when this balance is disrupted drastically, and not just temporarily for a jutsu? Bad things, my friend. Bad things.
Naruto and Madara/Itachi are prime examples of this within my theory. Part of this stems from my previous theory behind why Madara and Itachi, and now Sasuke went blind (you might need to read the first few posts in this theory if you haven't already).
Now, we know that
1) the kyuubi's yin chakra is sealed within Naruto (or yang, I forget which and get them mixed up frequently).
2) This separation was done on purpose by Yondaime, who did nothing without a reason.
So my theory is that normally, Naruto is in balance spiritually. The seal allowed the kyuubi chakra to leak through and mix with his own chakra from a very young age. While the seal was still strong, this constant mixing strengthened Naruto's chakra, making more resilient and able to resist/restrain the kyuubi chakra. Much like how I believe the CS allowed Sasuke to overcome and restrain Oro, but that's for another day.
But when the kyuubi chakra is let out in a huge quantity, Naruto's balance shifts dramatically, toward whatever it was Yondaime sealed in him (don't feel like looking it up right now).
Humans aren't meant to have their chakra shift so far to one side. Thus, Naruto loses control gradually as the balance shifts more. Also, his body is harmed as the quantity of the chakra increases.
Didn't you ever wonder why Killerbee could go up to an eight-tail shroud without any visibly negative effects? It's because both his and the Hachibi's chakra were balanced. Thus, no ill effects until his skin started peeling, and that was just because of the transformation.
So why did Yondaime separate the kyuubi's chakra? There are a few possibilities for this.
1) He didn't want a whole kyuubi in Naruto while Madara was still walking around out there. A split kyuubi could possibly put a hitch in Madara's plans and keep the village safe at the same time with Naruto as its protector.
2) Simple expediency. Sealing the entire kyuubi in Naruto was an impossibility so Minato split in in half to make sealing it easier.
3) Something had to go in the Shinigami's stomach. While Minato would've liked to seal the whole fox into Naruto it just wasn't possible. So he split the kyuubi, half to satisfy the Shinigami and half to pass on the Konoha's future protector, Naruto.
Nagato's story
Why is Pein the way he is? Well, I went back to Chapter 373 I believe, "The Student-Teacher Era" in my re-reading of Part 2. And I came across some hints I believe point to what could've happened to turn Nagato into Pein.
You must be registered for see images
You must be registered for see images
You must be registered for see images
You must be registered for see images
You must be registered for see images
These are the pages most relevant to the discussion, in approximately the order I'll be addressing them. Additional info can be found in more of the Jiraiya v. Pein fight, especially in Pein's villain monologue.
We know that after Jiraiya left the three, they went around making a name for themselves. Presumably they fought for peace in the Rain Village and like Jiraiya said anyone who fought them ended up dead. They were uber. But someone more uber than them came along, and offed Yahiko.
Nagato, upon seeing this, probably went ape**** like he did when he was a kid. He went after the person and, in all sense of the word, delivered judgment. But in the end it was too late for his friend whom he'd sworn to protect. He finally felt the pain that Yahiko was talking about. But he also realized that while going after Yahiko's killer that he felt no guilt at killing him. No remorse, no hesitation. Just...judgment. He delivered unto the person the pain he felt when Yahiko died, and thus evened the scales. This was the turning point.
From that point on Nagato killed all emotion in his heart. It became a Heart of Blades, killing all human feelings he had. The pain of killing those emotions is what allowed him to ascend past the mere level of humanity (reading his conversation with Jiraiya closely makes this theory make a lot more sense, trust me) to become, in his own eyes, a god.
He kept Yahiko's body (which is dead) as one of his entourage to remind him of this daily. It became the Deva Body because much of what Nagato believes in was from Yahiko's philosophy. And the abilities he gave the Deva body were specifically picked so the body remained untouched.
Why else was Pein so set on not being touched while in the Deva body? It's abilities could've aided greatly in the fight against Jiraiya except it probably would've gotten mangled. He could've let Kakashi land that last Raikiri after the chains snapped then allowed the Asura Body to come in behind Kakashi and finish him. With how fast it came in neither Chouji or Chouza could've caught it in time to stop it from finishing off Kakashi. But Pein didn't go with this plan, and as a result the fight went on longer than it had to.
Like many have suggested, Nagato, wherever he is, has a certain fondness for the Deva Body which is why he makes sure that nothing touches it at all.
Madara, Suigetsu, and Kisame
Madara set into motion plans within plans I believe. He ordered Suigetsu to get allow himself to be captured by Oro because he knew the Hoozuki clan special abilities would interest Oro (off of what the Databook says it seems like Suigetsu's special ability is family related and not Oro-related).
*Mini-theory-Oro might've gotten Suigetsu in the hopes of possessing him then possessing his body. With Suigetsu's special ability to turn into water Oro could enter into anyone he further wanted to possess, in other words a "double-possession", which would allow him to stay in another person's body indefinitely through Suigetsu. But, it would seem that that didn't pan out.
Or, he could've just used Suigetsu to figure out a way to perfect his Throw-Up No Jutsus, which defy all laws of physics by spitting out an entire body from another. Pick whichever one seems cooler to you *end mini-theory*
So, Suigetsu was the mole within Oro's organization, at first just so Madara had an eye on him. But once Madara found out Oro wanted Sasuke he left instructions with Suigetsu in the eventuality that Sasuke rebelled against Oro. Suigetsu could also have been there to stop Itachi from going against Madara. The knife at Itachi's throat as it were since Suigetsu was undoubtedly, for a period of time, stronger than Sasuke during the TS.
Madara was also the one to enact the "Bloody Mist" chuunin trials. The whole "survival of the fittest" fits right in with his whole warlike mantra, and people like Zabuza and Kisame would be his favorites.
But once the village experienced the debacle that was Zabuza, Madara and his practices fell out of favor. And, by popular vote, Madara was kicked off the island (or at least out of his position). Since plans had started to pick up regarding bijuu capture Madara was content to let the position go and start becoming more directly involved with Akatsuki affairs. This could be the reason why when Kisame recognized Madara he stopped himself from completing the "Mizukage-sama" and just stopped at "Mizukage". Madara no longer had that position.
And the mask fools everyone, since Suigetsu didn't even recognize Madara when Taka and Akatsuki were discussing their plans. It seems like Madara is trying to avoid Sasuke putting 2+2 together to get 5 so he's keeping his identity from Suigetsu. Otherwise, why not reveal himself in front of Taka and Kisame to solidify his power?
Danzou *dunh dunh DUNH*
This is, in my opinion, my coolest theory in this bunch of theories. It makes a strange kind of sense despite how random, and possibly unlikely, it is. Yet, I present it nontheless.
Madara is a Class-A prick. There's no denying that. But the possibility still remains that he was telling the complete truth to Sasuke as he knew it, including the summoning of the kyuubi. So if Madara didn't summon the fox who did?
I'm guessing you know where I'm going with this since the post has a title, but before you start to flame me I'm not on that BS about him being Obito or Tobi or Tobito or Naruto's mom. No, I'm thinking that Danzou is a Senju. And I don't mean a pale imitation Senju like Tsunade or Tobirama, but a genuine, Mokuton-having Senju.
Why would he keep his abilities secret while growing up? I have no idea. Maybe it was the widespread dislike/prejudice for Kekkei Genkai. Maybe he just wanted a trump card. Or maybe a few people know about his ability, a very small number. Either way the word "Ne" or Root doesn't just represent his organization which is meant to be the group that holds the Tree that is Konoha up, but how he sees himself.
Danzou, after seeing the ill-will the Uchiha were building towards Konoha, decided to frame them. We've seen that he's one for pre-emptive strike, and that's just what he did. He controlled the kyuubi during the attack and accepted the village's losses as collateral damage. Whatever number they lost would be less than if the Uchiha rose in revolt against the village so the end justified the means in his eyes. Once that was done he was among the first to point fingers to and condemn the Uchiha.
Why Madara Needs Sasuke
I still think that Madara needs Naruto for something, though what it is I'm not exactly sure.
I'm thinking that upon gaining the MS and seeking to control the kyuubi Madara made some kind of contract that linked all future Uchihas to the kyuubi. It is this contract that is behind the sinister nature of their chakra, since it is linked to the most sinister creature alive. What the nature of this link is I'm not sure yet, but there was a reason why kyuubi told Sasuke he would regret killing Naruto and I'm sure this theory hints at it in some way.
Back on topic I think that Madara picked Sasuke specifically to aim him towards Konoha for one prize: Naruto. How does he know the nature of their relationship you ask? He had a video recording of the whole fight through Zetsu so he knows the entire angst filled history between the two. He also knows that Sasuke is the one person he can send to Konoha that Naruto won't kill. Everyone else is fair game for the kyuubi jinchuuriki and Madara is to the point where he can't risk the people he needs.
Why did he send Pein there, you might be asking? Read the last sentence in the last paragraph again and you'll see why he directed Pein into that deathtrap called Konoha. For the sake of making this clearer, he most likely sent Pein to Konoha to either die or get severely weakened. With all eight bijuu in his control (at least until Killerbee rickrolled Akatsuki) Pein is now expendable.
continued in next post