Thread:Silver-Haired Seireitou/@comment-8914761-20140730143037/@comment-2089817-20140730154333

Well, I'm just spitballing here, I can probably give you something more useful later on when I give it more thought, but one possibility I have is that...

Let's consider the Amatsu-Mikaboshi in Japanese mythology. It is the original source of darkness, of "evil" shall we say, and when it was destroyed by Yin and Yang, its residue still existed in all living beings. It is the source of all emotions within living beings. The Curse of Hatred is ideally the most extreme case of negative emotions rising to the surface. In an Uchiha, when they reach such a degree, the Sharingan becomes more powerful.

Why is that?

Well, it is possible to argue that it is because emotions arise from the mind. The mind produces spiritual energy, necessary for chakra, and it is a form of spiritual energy tied into that degree of hatred that gives birth to the Sharingan and even the Mangekyō Sharingan. However, it is at this point that the spiritual energy becomes so strong that an imbalance between yin and yang occurs within the body of the Uchiha; which leads to blindness. They must acquire the "physical energy", which is present in a living being's cells, of a fellow Uchiha that bears a similar degree of chakra to them. In other words, a close family member. Acquiring that physical energy and implanting it returns the Uchiha to a state of equilibrium, offsetting the incoming blindness. And this phenomena gives birth to the Eternal Mangekyō Sharingan. At least, this is how I interpret it, but the canon does give my theory plausibility.

Now, the Uchiha returns to a balanced state. However, the curse of hatred could still become stronger. Hatred and anger knows no limits. And thus, following this theory, it is possible to say that the spiritual energy once again becomes incredibly stronger. So what happens this time? Blindness could creep up again, just like before, but actually, there is another solution.

In order to prevent blindness at this point, the Uchiha has to get rid of the excess spiritual energy from causing an imbalance. And the way to do this would be to infuse a greater amount of spiritual energy into one's jutsu. Genjutsu, Ninjutsu, and so on, by infusing more spiritual energy into those, all of one's jutsu will become more... shall we say, "spiritual". It will possess more spiritual elements, infused with great emotion, so of course it will enhance strength and such, but jutsu as well will experience incredible increases. You could ideally transform every single fire release ninjutsu into black flames, like Amaterasu, for example.

Like I said, this is just a basic idea, I'm sure you can take it from here, and I'll give it some more thought tonight if you would prefer something else.