Th vai dar pe Sharingan, as Madara's eyesight was no longer in danger of deteriorating. It is only possible for an Uchiha to gain this power through the donation of another's eyes, the act of which is tantamount to suicide, as the Uchiha owe their fame to their ocular powers. This can only take place between clan members, and is not guaranteed to give everyone regained eyesight and ocular powers. According to Itachi Uchiha, it then became commonplace for Uchiha to kill their friends to gain the Kaleidoscope Sharingan, then kill a sibling to make it's power permanent. These eyes are otherwise described as perfect or flawless Mangekyo Sharingan by Obito Uchiha. It wasn't until chapter 673 that the term "Choku tomoe" was used by Madara Uchiha.
With his powers, Madara Uchiha was able to subdue several clans he encountered. This is suggested to be similar to how he originally subdued the Uchiha clan with his ocular powers and became it's leader.
Originally, the Kaleidoscope Sharingan granted the user frightening power, but this power would eventually become more sealed with its use, eventually cutting itself off. After Madara received the eyes of his younger brother, he regained his eyesight. However, the eyes were said to have given birth to a mutant ocular power: the eternal Kaleidoscope Sharingan. The user can use Uchiha ocular powers without causing the eyes to deteriorate. The eyes are referred to as perfected kaleidoscope Sharingan by Obito Uchiha. "Eternal kaleidoscope sharingan" is not used as an official term. Itachi used various terms to describe the eyes, such as "true transformation" and "true power". According to Sasuke Uchiha, he became stronger after transplanting his brother Itachi Uchiha's eyes, claiming he could feel his ocular powers. This suggests that Sasuke inherited Itachi's ocular powers, as well as part of his chakra. Madara Uchiha claimed he possessed the ocular powers of his brother Izuna Uchiha, thanks to transplanting his eyes.
It is suggested that the eyes can support non-Kaleidoscope ocular powers such Izanagi and Izanami, when Sasuke Uchiha asked his brother how they would use Izanagi to defeat Kabuto. Because of Itachi's initial description, Sasuke was confused as to how to cast Izanagi over someone, as opposed to himself.
During battle, Madara Uchiha attributed Sasuke's movement to the Choku-tomoe Mangekyo Sharingan, even considering taking them for himself until he can regain his Rinnegan. Later, Sasuke's left eye would use a peculiar power that allows him to inexplicably move objects or himself, as if teleporting. Madara suggested this was because of his Choku-tomoe Mangekyo Sharingan, and attempted to take the eye.
According to Madara, only him and Sasuke have been able to awaken this eye.
Madara Uchiha Edit
Madara awakened the Choku-tomoe Mangekyo Sharingan when he transplanted his brother Izuna's eyes. Madara's kaleidoscope Sharingan is capable of stabilizing the Susano'o's chakra, rendering it complete.
Sasuke Uchiha Edit
Sasuke was originally reluctant to transplant Itachi's eyes, but decided to do so in order to secure his ocular powers in order to battle with Naruto. His Kaleidoscope Sharingan has allowed him to perfect the use of Susanoo in conjunction with Amaterasu and Enton: Kagu-tsuchi , a power he was previously unable to use because his eyesight was failing him. When generating Enton: Kagu-Tsuchi with Susano'o, the flames now have a spiral at the center, and the flames have a more substantial appearance before and after their chakra form is modified.
Like Madara Uchiha, Sasuke can also stabilize the chakra of his Susano'o, completing it. He also used it to protect Naruto's Kyubi transformation.
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