How did Danzo acquire all those Sharingan in his arm?


I was just wondering, how did Danzo get all those Sharingan eyes in his arm?
Is it from the people that Itachi and Tobi killed [that
night](http://naruto.wikia.com/wiki/Uchiha_Clan_Downfall)?

[![Danzo's Right
Arm](https://i.stack.imgur.com/alFVR.gif)](https://i.stack.imgur.com/alFVR.gif)




Danzo acquired his right arm from [Shin
Uchiha](http://naruto.wikia.com/wiki/Shin_Uchiha) with the help of Orochimaru.
This is found in [Naruto Gaiden: The Seventh Hokage
Manga](http://naruto.wikia.com/wiki/Naruto_Gaiden:_The_Seventh_Hokage_and_the_Scarlet_Spring).

> Orochimaru did another implant onto Danzō taking Shin Uchiha's Sharingan-
> embedded arm and placing that, alongside some of Hashirama Senju's cells,
> onto that of Danzō's.

[![enter image description
here](https://i.stack.imgur.com/iu1BPm.png)](https://i.stack.imgur.com/iu1BPm.png)

(Shin Uchiha's Left Arm)

More on [Shin Uchiha](http://naruto.wikia.com/wiki/Shin_Uchiha):

> Shin was one of Orochimaru's experimental test subjects and followers, and
> possessed a unique genetic make-up that allowed for tissue and organ
> transplantation with absolutely no chance of rejection. Together they
> performed various experiments, cultivating clones from Shin's teeth and
> nerves in order to uncover many secrets of genetics. At some point Shin
> became intrigued by the Uchiha clan, especially Itachi Uchiha. As such, he
> began to imitate the Uchiha: adopting their surname and customary clothing,
> as well as numerous Sharingan which have been implanted all over his body.
> **His Sharingan-embedded right arm was harvested by Orochimaru and
> transplanted to Danzō Shimura along with some of Hashirama Senju's cells**.
> Some time after this, Shin left Orochimaru's side and took most of his
> clones with him.




Danzo acquired his right arm from [Shin
Uchiha](http://naruto.wikia.com/wiki/Shin_Uchiha) with the help of Orochimaru.
This is found in [Naruto Gaiden: The Seventh Hokage
Manga](http://naruto.wikia.com/wiki/Naruto_Gaiden:_The_Seventh_Hokage_and_the_Scarlet_Spring).

> Orochimaru did another implant onto Danzō taking Shin Uchiha's Sharingan-
> embedded arm and placing that, alongside some of Hashirama Senju's cells,
> onto that of Danzō's.

[![enter image description
here](https://i.stack.imgur.com/iu1BPm.png)](https://i.stack.imgur.com/iu1BPm.png)

(Shin Uchiha's Left Arm)

More on [Shin Uchiha](http://naruto.wikia.com/wiki/Shin_Uchiha):

> Shin was one of Orochimaru's experimental test subjects and followers, and
> possessed a unique genetic make-up that allowed for tissue and organ
> transplantation with absolutely no chance of rejection. Together they
> performed various experiments, cultivating clones from Shin's teeth and
> nerves in order to uncover many secrets of genetics. At some point Shin
> became intrigued by the Uchiha clan, especially Itachi Uchiha. As such, he
> began to imitate the Uchiha: adopting their surname and customary clothing,
> as well as numerous Sharingan which have been implanted all over his body.
> **His Sharingan-embedded right arm was harvested by Orochimaru and
> transplanted to Danzō Shimura along with some of Hashirama Senju's cells**.
> Some time after this, Shin left Orochimaru's side and took most of his
> clones with him.

