i wrote this in another thread but i'm making my own thread to share with all of narutobase because i see this question coming up a lot and i think my theory is pretty hole proof. so feel free to try and find any flaws and argue your points.
i think its obvious why kakashi nor tobi has went blind from using the mangekyou sharingan. think about it for a second.where in the manga does it say that the eyes have to be MANGEKYOU before being transplanted to find new eternal light? with that being said i could assume that kakshi's mangkyou sharingan was activated as a eternal mangekyou sharingan could i not? now some could argue that it doesn't look like a ems right? well the reason it isn't a combination of two MS is because kakashi isn't uchiha and therefor never had a MS to begin with. am i making sense here? and the same could go for tobi. i believe that is why his mangekyou hasn't been shown yet. because it could give away one of two things. one being that he is not a uchiha if his mangekyou doesn't show another MS pattern mixed with obito's or two it would tell his true identity if we get to see that second MS pattern and compare it to known MS users. thats just how my brain processed it all. i could be wrong but i don't think so.
i think its obvious why kakashi nor tobi has went blind from using the mangekyou sharingan. think about it for a second.where in the manga does it say that the eyes have to be MANGEKYOU before being transplanted to find new eternal light? with that being said i could assume that kakshi's mangkyou sharingan was activated as a eternal mangekyou sharingan could i not? now some could argue that it doesn't look like a ems right? well the reason it isn't a combination of two MS is because kakashi isn't uchiha and therefor never had a MS to begin with. am i making sense here? and the same could go for tobi. i believe that is why his mangekyou hasn't been shown yet. because it could give away one of two things. one being that he is not a uchiha if his mangekyou doesn't show another MS pattern mixed with obito's or two it would tell his true identity if we get to see that second MS pattern and compare it to known MS users. thats just how my brain processed it all. i could be wrong but i don't think so.
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