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The Uchiha Clan
The Uchiha clan was one of the four noble clans of Konohagakure, and was also reputed to be the village's most powerful clan, producing shinobi that were exceptionally talented and battle-oriented. Together with the Senju clan, they founded Konohagakure, but is now almost extinct after the events of the clan massacre. They are the cousins of Senju clan, and their ancestor was the Elder Son of Sage of Six Paths. As the Sage made the Younger Son his successor, the Elder Son grew jealous and this started a series of bloodshed between these two clans from around a hundred years. The Uchiha and Senju are said to be pure rivals, true enemies. They were famous mainly for wielding dojutsu, called 'Sharingan'. Also, they were famous for their extensive use of Fire Release.
Sharingan
Sharingan, which literally means, 'Copy-Wheel Eye', is a doujutsu, and a kekkei genkai, only possessed by the members of the Uchiha clan. The Sharingan, can see chakra flow and also the colour of chakra. They can also recognize Genjutsu, because of the irregular chakra that is produced, when a person is under genjutsu. As the Sharingan evolves, gaining more tomoe, this ability extends to being able to track fast-moving objects before finally giving some amount of predictive capabilities to the user, allowing them to see the image of an attacker's next move from the slightest muscle tension in their body and counter-attack or dodge without any wasted movement. It also grants the user, the ability to copy any technique, they witness, except Kekkei Genkai, or Kekkei Tota.
Also, the most famous ability is 'genjutsu', i.e. the Sharingan can enable the wielder to put anyone under a genjutsu and feed them false illusionsn addition, more rarely used by the Uchiha clan, the Sharingan can allow the user to perform two very powerful and unique genjutsu: Izanagi and Izanami, which alters or decide one's destiny, respectively. Using Izanagi, the user can warp reality for a short amount of time, changing reality into illusion and illusion into reality, thus escaping death and rewriting destiny; although to make use of this technique to its full extent, the user must have the DNA of both the Uchiha and Senju. Izanami, on the other hand, is a genjutsu that traps the victim in an infinite loop disregarding their five senses; this technique was specifically created to counter anyone who would abuse Izanagi's ability to alter their destiny, by forcing the victims to relive the situation over and over until they accept it and cease using Izanagi. Both techniques have been labelled kinjutsu, because use of either causes the eye that performed Izanagi or Izanami to close forever.
Stages
1 Tomoe
The one tomoe sharingan, can allow the user to only copy hand movements and see the flow of chakra.
2 Tomoe
The two tomoe Sharingan, can allow the user to predict the person's movement and copy their jutsu.
3 Tomoe
The three tomoe Sharingan, can allow the user to use heightened abilities, also avoid high speed attacks and use the abilities of one and two tomoe together.
The Sharingan, matures from one tomoe to three tomoe, with extensive training.
Mangekyo Sharingan
The Mangekyō Sharingan, literally meaning "Kaleidoscope Copy Wheel Eye", noted to be the "heavenly eyes that see the truth of all of creation without obstruction is an advanced form of the Sharingan that has only been activated by a handful of Uchiha. It was also awakened by Kakashi Hatake — a non-Uchiha.
The Mangekyō Sharingan is awakened through the trauma experienced from the death of a person very close to the Sharingan user. With the user normally having to witness or experience this first hand, Uchiha throughout history have killed those closest to them in order to expedite this process. To obtain the Mangekyō Sharingan, one must feel the emotion of losing a friend or family, as merely killing them or watching them die will not activate it. It is distinguished from a normal Sharingan by its appearance, which changes the form of the tomoe seal. Unlike the Sharingan, the appearance of the Mangekyō Sharingan differs from user to user with all known wielders of the dōjutsu having eyes that resemble variations of pinwheels; one variation is known as the "Straight Tomoe", which seems to grant the user fluidity in their movements when fighting.
Abilities of Mangekyou Sharingan
The Mangekyou Sharingan, grants the user the abilities of the normal Sharingan, along with extra techniques, which differ in each user:
1)Amaterasu (Sasuke and Itachi)
2)Tsukuyomi (Sasuke and Itachi)
3)Susano'o(only awakened by those who have double mangekyou)(Itachi, Sasuke, Madara)
4)Kamui(Obito and Kakashi[borrowed eye] )
5)Kotoamatsukami(Shisui)
6)Yasaka Magatama(Itachi and Madara)
Sasuke uses his Amaterasu to shape manipulate the flames and create Blaze Release. He also has the ability to control the amount of flames of Amaterasu.
The drawback of Mangekyou Sharingan, is that the user loses the light in his eyes eventually, as Itachi almost went blind during his fight with Sasuke.
Eternal Mangekyou Sharingan
The Eternal Mangekyou Sharingan, is acquired by transplanting one's brother's eyes into oneself, as Sasuke and Madara transplanted their brother's eyes on themselves. The pattern of the Sharingan, changes, depending on the Sharingan the user has transplanted. The advantage of this is that, the user never goes blind, and it grants the user, the ability to maintain Perfect Susano'o, which is the highest form of Susano'o.
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