(Proof) How the Mangekyou Blindness works.

[Flame Dragon]

Itachi had the MS for a long, long time and he went almost completely blind only during his fight with Sasuke.
Meanwhile, Sasuke had the MS for only a few days and he went almost completely blind in a really short time.
And then there are Kakashi and Tobi.
Kakashi has been using the MS only since the start of Part II, but he has been relying on Kamui really a lot, especially in the recent fights, but he has no signs of blindness.
Tobi is probably the person that used the MS the most, since his whole fightning style revolves around Kamui's defense and during a fight he has it active for pretty much the entire fight.

So why such a difference? Why Sasuke went blind so fast and Itachi could keep his MS much longer? Why Kakashi and Tobi have got no effect?

To go blind you must use MS techniques. Every technique used consumes a little of the MS light.

My Theory:
Each technique puts a different strain on the eyes, based on how much chakra they use and how much strain it puts on the body. So every technique causes the light in the eyes to deteriorate at a different rate.

And to me the most straining MS tech is Susanoo.

The reason that i believe this, is because:

While Amaterasu, Tsukuyomi, Kakashi's Kamui and Kotoamatsukami are oneshot jutsu (and as such, you shoot them at your target, it causes immediate strain but then your eye has time to rest), Susanoo is a costantly active technique, which is used to protect the user.

And since Susanoo turned on is always active, it continuely puts a strain on the eyes, and makes the user feel pain in their body, like Sasuke said.
So it must mean that the reason that Itachi was able to keep his light for much longer, is because he only used Amaterasu and Tsukuyomi when it was necessary, and didn't really use Susanoo that much.
Meanwhile, Sasuke abused every MS technique in his fights, especially Susanoo which was costantly active, putting an enormous strain in his body (as demonstrated by the fact that Karin had to heal him pretty much the entire time)

The reason why Kakashi still has got plenty of light left is because he didn't really use Kamui that much until his fights in the war, and because it is a oneshot jutsu, it only puts a minimum strain on the eyes.
And since Kakashi has no Susanoo and only one eye, he will not lose the light very soon.

For Tobi my guess is because Kamui is a very light MS tech, and it doesn't really put that much strain since the only thing it does is transport parts of your body to the other dimension. Couple with the Senju DNA he has and he probably still has a buttload of light left on his eye.

But what about EMS?

Since EMS doesn't lose light, it actually allows Sasuke to keep Susanoo active without feeling any pain to his body. Same for Amaterasu and Blaze Release.

Remember that the eyes are connected to the brain, losing light is very stressful to the brain and will cause a lot of pain to the body.
And since Chakra is connected to lifeforce, it makes sense that MS techs, which cause a lot of stress, would use a lot of it. So it also makes sense if EMS would use less Chakra than MS.

Afterall, wouldn't it be much harder to fight while your eyes are burning like hell?

[Huang]

The only reason Tobi and Kakashi arent going blind is because both can't use the full power of both eyes.

[November Nolove]

cool thread
plus rep :D

[Owarij]

According to itachi, the moment you unlock ms your eyes start losing light...regardless of if you use abilities or not.. it's slowly deteriorating... using abilities however increase this process

[lord sauke]

Good

[UncleSi]

Nice thread man, but I thought this was well known...

[Misaki Yata]

We already know this plus it hardly matters since Kakashi is with Obito so he won't go blind and Obito has senju dna.
And the only living Uchiha who has EMS is Sasuke so he's 100% never going blind.

[iSpeak the Truth -in detention-]

The only reason Tobi and Kakashi arent going blind is because both can't use the full power of both eyes.

This^

[Lolxe]

The only reason Tobi and Kakashi arent going blind is because both can't use the full power of both eyes.

No.. That's because Kakashi's eye isn't originally his, thus gaining the affect of an EMS. And Obito having EMS has 2 options of reasons: 1. Because he has Senju DNA. 2. Because the right part of his body is actually made of Senju DNA, therefore it's not actually his own body.

[Owarij]

The only reason Tobi and Kakashi arent going blind is because both can't use the full power of both eyes.

Unfortunately they are going blind, well at least kakashi is

There's a reason he asked that question and pulled up his sharingan.. he was subtly hinting to itachi something.. and itachi responded with "impossible.. you"

7 or so chapters later he pulls out ms

[iSpeak the Truth -in detention-]

Unfortunately they are going blind, well at least kakashi is

No indication or proof whatsoever.

[Owarij]

No indication or proof whatsoever.

stated in databook

and kakashi basically told itachi " My eye is losing sight, you had yours longer, how bad is yours?"
look up ^


nonsense to assume that just because he implanted a eye it wont lose light like all mangekyou's...

kakashi will not complain because he has a perfectly good working eye, and he's already accustomed fighting with 1 eye

[Aotsuki Katsumi]

I have no idea what´s keeping Tobi with a capable vision, but when it came to Sasuke I´d guess the frequency of which he was forced to use it (granted, I agree some times was a waste) could be a major factor quickly leading to his level of blindness. After I reflected on his use of it I came up with the conclusion that he used Amaterasu 3 times(shown, not sure if Blaze Release puts the same strain so I didn´t include it), Tsukuyomi at least 5 times and had the Susano'o active at 6 occasions for sometimes extended amounts of time while he still had his 'normal' Mangekyo Sharingan.

With that I´d guess he used it at least 14 times plus a few more for safety's sake, and due to his little rampage and forced battle conditions(ya know, fighting strong Kage and the tactic of hitting hard and fast against Danzo's Izanagi) the frequency was quite considerable. Although some will still count it as such, I´m not considering that a full spam, and he still had Itachi's eyes in Tobi's storage so he could have felt a bit safer with that in mind, although he just decided to take them in response to Naruto's challenge.

[Jellal Fernandes]

stated in databook

and kakashi basically told itachi " My eye is losing sight, you had yours longer, how bad is yours?"
look up ^


nonsense to assume that just because he implanted a eye it wont lose light like all mangekyou's...

kakashi will not complain because he has a perfectly good working eye, and he's already accustomed fighting with 1 eye

Some people don't understand..Let them be..

[iSpeak the Truth -in detention-]

stated in databook

and kakashi basically told itachi " My eye is losing sight, you had yours longer, how bad is yours?"
look up ^


nonsense to assume that just because he implanted a eye it wont lose light like all mangekyou's...

kakashi will not complain because he has a perfectly good working eye, and he's already accustomed fighting with 1 eye

No he did not BASICALLY say that! That's what you assumed.

Kakashi came to that conclusion from his observations in their last encounter, where among a lot of things, the biggest giveaway was when Kisame said to Itachi, "it's dangerous for you to use those eyes".

An Uchiha can determine if another Sharingan user has Mangekyou or not via the color of the eye. When Itachi met Sasuke, he could immediately tell whether he had it or not, and commented on it.

What's in the Databook? The same old MS rule that applies only to Uchiha's or having both eyes?

[YellowCat147]

Nice thread + rep, although I knew most of the from before

[Owarij]

No he did not BASICALLY say that! That's what you assumed.

Kakashi came to that conclusion from his observations in their last encounter, where among a lot of things, the biggest giveaway was when Kisame said to Itachi, "it's dangerous for you to use those eyes".

An Uchiha can determine if another Sharingan user has Mangekyou or not via the color of the eye. When Itachi met Sasuke, he could immediately tell whether he had it or not, and commented on it.

What's in the Databook? The same old MS rule that applies only to Uchiha's or having both eyes?

noone said the ms rule applies to both eyes, that's your assumption,
UNDER kamui, the databook says, use of the mangekyou will cause kakashi to lose his light

this debate is over right there...You can choose to be in ignorance if you want..


and lol? he was talking about observations? NOWHERE in that fight did kisame or itachi hint blindness was a factor to ms, he just said it was dangerous..
also, kakashi ALREADY praised kakashi's analytical skill for realizing the mangekyou puts strain on him like 6 pages back...

An Uchiha can determine if another Sharingan user has Mangekyou or not via the color of the eye

Wtf are you talking about? you can't tell if someone has mangekyou if their eyes aren't on mangekyou...Sasuke came to the fight with 3 tomoe, because that's what he had...
color in eye?...

k




End the debate please..this is under kamui in databook 3

[iSpeak the Truth -in detention-]

noone said the ms rule applies to both eyes, that's your assumption,
UNDER kamui, the databook says, use of the mangekyou will cause kakashi to lose his light

this debate is over right there...You can choose to be in ignorance if you want..


and lol? he was talking about observations? NOWHERE in that fight did kisame or itachi hint blindness was a factor to ms, he just said it was dangerous..
also, kakashi ALREADY praised kakashi's analytical skill for realizing the mangekyou puts strain on him like 6 pages back...

Kakashi is smart enough to make those deductions even though a lot of others aren't >_>

And....the databook has mislead people before.

[Owarij]

Kakashi is smart enough to make those deductions even though a lot of others aren't >_>

Once again, there was NOTHING in that fight that could even remotely hint, itachi was going blind... he didn't mistake kakashi for kurenai, you don't even KNOW how bad his blindness was back then.. 3 years ago...

you think kakashi magically knew ms blinds your eye? when he had absolutely nothing to go on?
NO ,kishi made kakashi say that to hint to readers he had it

thus itachi's "Impossible..you?"

Implying that itachi did not think it was possible for a non uchciha to unlock a ms

why do you think a few chapters later he actually pulled it out against deidara?

i'm done arguing the obvious, think what you wish

[iSpeak the Truth -in detention-]

Once again, there was NOTHING in that fight that could even remotely hint, itachi was going blind... he didn't mistake kakashi for kurenai, you don't even KNOW how bad his blindness was back then.. 3 years ago...

you think kakashi magically knew ms blinds your eye? when he had absolutely nothing to go on?
NO ,kishi made kakashi say that to hint to readers he had it

thus itachi's "Impossible..you?"

Implying that itachi did not think it was possible for a non uchciha to unlock a ms

why do you think a few chapters later he actually pulled it out against deidara?

i'm done arguing the obvious, think what you wish

I intend to.

[garas56]

Kekkei genkai and their related techniques cannot be taught to or copied by others. However, kekkei genkai can be given to others. Dōjutsu, or other kekkei genkai isolated to a single organ, can be transplanted into the body of another, as was done with transferring Obito's Sharingan to Kakashi. SO Kekkei genkai Is someting special Itachis and Sasukes body was uncapable to use it without a cost and obito and Kakashi has very similarly Kekkei genkais and shered just 1 of dojutsus(1Sharingun) So Kakashi and Obito just dont use full power of sharingun thats why they canot get blind If one of them get both sharinguns It will unlock new Powers and will pousibly get damage by uzing that power.

[UchihaInza]

yes i think we all knew how it works thank you but ..kakashi hasnt used kamui alot...has he used it like probably 6 or 7 times in the whole shippuden..10 the most.. just started using it Uchiha Inza..and you are right about obito all he does is hide behind his gods majesty!!how come he isnt blind or even sees blury at least ???

[shadedcrow]

No.. That's because Kakashi's eye isn't originally his, thus gaining the affect of an EMS. And Obito having EMS has 2 options of reasons: 1. Because he has Senju DNA. 2. Because the right part of his body is actually made of Senju DNA, therefore it's not actually his own body.

You dont get a EMS from transplanting a sharingan from a Uchiha to a non Uchiha. At this point you at least have to be brothers and both have the MS unlocked. Plus Obito has access to a grip of sharingan to transplant at will.


@UchihaInza you for got to end your post with your name... just sayin...

[★Waltz]

And....the databook has mislead people before.

Cool story bro.

[StraawHat]

Makes sense.