LOL.. I normally don't reply to these types of threads, but this is just retarded. Sharingan burns the retina? Where exactly did you hear this? If you're referring to the conversation between Kakashi and fake Itachi, that was just a misinterpretation by the readers. Sharingan is a "true doujutsu" as well, as "doujutsu" simply means "eye technique." Again, where did you hear that the Byakugan increases muscles around the eye? All we can see is that the veins start bulging. One cannot simply add/remove muscle from any part of their body whenever they want, anyway.. Finally, what makes you think that more muscle allows more chakra to be passed through a certain area of the body? Don't make shit up.Originally Posted by Zidarri the Exile