Board Thread:Naruto Discussions/@comment-16064415-20140826064323

the Sharingan and the Mangekyou are both eyes that reflect the heart, in a way, they also reflect the users skills in Taijutsu, Ninjutsu and Genjutsu. Uchiha with siblings gain the "three god jutsu" Amaterasu, Susano'o and Tsukuyomi, the given strength of each is inherent to the skills of the user, those with great skill in Genjutsu, would gain a powerful Tsukuyomi, as was the case with Itachi. those with very little skill in genjutsu, have a weaker version of the Tsukuyomi, as is the case with Sasuke. the Susano'o's power and shape, is adherent to the taijutsu of it's user as well as the inner self. hence why each is unique in it's innitial form. While Amaterasu's strength, is reflecting the users skill in Ninjutsu.

those without siblings gain a unique mutation of Mangekyou, possessing jutsu that do not cause blindness.but the logic of the skills of the user is still in place, but since only one jutsu takes roost within these unique mutations, the most prominent skill takes priority to the ability of the eyes, hence Shisui's Kotoamatsukami genjutsu and Obito's Kamui.

enter: Kakashi Hatake, non-uchiha and known user of the Sharingan, at first, Obito had given but one eye to him as a gift, but this allowed kakashi to gain skill and precision unlike before gaining him the Title Kakashi of the Sharingan. now after Obito's second and permanent death, Obito spiritually visits Kakashi, doing something similar to when Dan Kato visited Tsunade on the spiritual plane, in some way, that I am still yet to figure out, this chakra transfer is unique, basically giving Kakashi the full abilities of an Uchiha, which would mean, the exact abilities of the sharingan are also changed to match his own skills as the legendary copy ninja. suffice to say, he is copying jutsu he has seen.

I believe, that now, Kakashi's copying abilities have been increase tenfold, now that the eyes are his own, and not a "Transplant" as it used to be, the sharingan after the chakra transfer materialized as if they are his own, thus I also believe the adverse effects he used to suffer won't happen  