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To prevent misunderstandings, let me clarify here.
Uchiha Hikari is a rather abnormal individual even among Mangekyo Uchiha. Her [Yachihoko] ocular Ninjutsu allows her to manipulate the opponent's mind and Chakra regardless of distance or any restrictions, provided the opponent has her imprint. She can also transfer Chakra to herself or others.
Because of this characteristic, she absorbed at least four different Mangekyo ocular Ninjutsu, as well as some Mangekyo abilities that are clearly not Yachihoko but are not named.
Her Mangekyo ocular Ninjutsu can operate continuously for 7 days x 24 hours without affecting her eyesight. Her vision was still clear after being sealed for a hundred years. After absorbing the Chakra of the entire Ninja World in one go, she could activate a Perfect Susanoo even without an Eternal Mangekyo, and then nearly split the combined Susanoo Nine-Tailed of Naruto and Sasuke with one slash.
In short, it's quite absurd. Those interested can check out the game plot.
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