Forum:Danzo Shimura

Implants and Related Abilities

"Danzō's most fearsome trait resided in his right arm, which held a total of ten Sharingan embedded onto it. The arm itself originally belonged to Shisui as well; this most likely reduces the draining effect of the Sharingans."

Where can you find references towards that information? Can't seem to find no information implying that the arm belonged to Shisui in the Manga nor Anime.