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Shisui's Mangekyou Sharingan casts the mind-control genjutsu, Kotoamatsukami,
but it activates only once in a decade. Why are people so eager to grab his
eyes?


CC BY-SA 3.0
2013-03-04T15:18:09.380
2779
2017-05-17T15:07:21.863
99
question
naruto
Why are people so eager to grab Shisui's eyes even though it activates rarely?


**Several big spoilers ahead.**

Three people have been showed to be eager to grab Shisui's eye, namely Danzo,
Tobi and Kabuto. Besides that, they have one other thing in common:

> They all have access to Senju Hashirama's cells, which significantly reduces
> the reactivation time of Shisui's eye. Hence, these people could put it to
> practical use without the undesirable restriction.  
>  
>  **Danzo** 's case actually shows this reduction of the reactivation time.
> He had stolen Shisui's right eye shortly before the Uchiha incident, and had
> Orochimaru implant Hashirama's cells into his body. He was able to activate
> Shisui's eye twice in a day, first during the five Kage meeting and later
> towards the end of his battle with Sasuke.  
>  
>  **Tobi** is later revealed to be Uchiha Obito. The right half of his body,
> destroyed during the Kannabi bridge battle, was repaired/replaced by Madara
> with Hashirama's cells.  
>  
>  **Kabuto** had access to Hashirama's cells due to both working under
> Orochimaru previously and through Yamato whom he had captured during the
> fourth shinobi world war. Shisui's left eye emerges during the war from
> Naruto's mouth due to Itachi's setup. Kabuto also hears Itachi talk about
> the use of Hashirama's cells to reduce Kotoamatsukami's reactivation time.
> He hoped to grab it for his own use.


CC BY-SA 3.0
2013-03-04T15:18:09.380
2780
2013-03-04T15:18:09.380
99
2779
answer