Board Thread:Naruto Discussions/@comment-3965545-20160510012347/@comment-3965545-20160512060722

I think it was just plot that kept them from using the Rinnegan they have in storage. It's a good thing Danzo and Orochimaru didn't know about the actual eyes that Shizune was holding in her little research/medical office.. I would bet Tsunade made sure Danzo never found out.