Well it is a nice theory... but just that. And i don't find it to be true, and i have reasons for that:
1.It was stated in the manga that a tailed beast cannot die, nor can it be sealed away for good or get rid of it by any means. Even if you kill it (let's assume you can do that) or seal it (like with the dead reaper seal) it will just reappear.
2.You said that Madara wanted to get back his Yang part from the kiuby, and that he had that change when he attacked Kushina right? Then let me ask you this: why didn't he just leave with the fox under his control, regain his powers and attack later? that would have been the best attack plan.. and don't tell me that he didn't think of it because as we have seen Madara is a mastermind.
3.You said that he linked his Yang chakra to the kiuby in his Fight with the first hokage right? When could he have done that? in the middle of the fight? don't think so, he wouldn't have had enough time because it would require some kind of jutsu or a seal or something. It is not something that you can do in an instant.
And about Madara's connection with the kiuby as far as we know it he was the only person who ever had the power to CONTROL/Manipulate the kiubi, (the first had the power to restrain it, and hold it down with his wood jutsu, doubt that he could toy with it like a pet the way madara does) and that's about it, nothing more was stated.
About his imortality? well it would make more sense that he gained that with the use of the first hokage's dna... using the plant he created in someway. Also the plant thing and Madara have something to do because we have seen that that is the way he is replacing missing limbs.
Well that's my opinion at least
1.It was stated in the manga that a tailed beast cannot die, nor can it be sealed away for good or get rid of it by any means. Even if you kill it (let's assume you can do that) or seal it (like with the dead reaper seal) it will just reappear.
2.You said that Madara wanted to get back his Yang part from the kiuby, and that he had that change when he attacked Kushina right? Then let me ask you this: why didn't he just leave with the fox under his control, regain his powers and attack later? that would have been the best attack plan.. and don't tell me that he didn't think of it because as we have seen Madara is a mastermind.
3.You said that he linked his Yang chakra to the kiuby in his Fight with the first hokage right? When could he have done that? in the middle of the fight? don't think so, he wouldn't have had enough time because it would require some kind of jutsu or a seal or something. It is not something that you can do in an instant.
And about Madara's connection with the kiuby as far as we know it he was the only person who ever had the power to CONTROL/Manipulate the kiubi, (the first had the power to restrain it, and hold it down with his wood jutsu, doubt that he could toy with it like a pet the way madara does) and that's about it, nothing more was stated.
About his imortality? well it would make more sense that he gained that with the use of the first hokage's dna... using the plant he created in someway. Also the plant thing and Madara have something to do because we have seen that that is the way he is replacing missing limbs.
Well that's my opinion at least