Board Thread:Naruto Discussions/@comment-3306440-20140416120407/@comment-28861328-20140421035522

WassoTasso wrote: Kaguya most likely does not have the Rinnegan. Remember that her Sharingan has 9 tomoe due to the fact that she ate the Shinju's fruit. The Rinnegan, it surfaced in Hagoromo and possibly his brother as well. Also, Hagoromo may have left the tablet for Indra and his descendants. But what if one of Asura's descendants read it? Sasuke did let Karin into the secret Uchiha room at the Naka Shrine in Chapter 618.

Asura's descendants cannot read it.

It can only be partially read with a Sharingan, more with a Mangekyou, and completely with a Rinnegan. Outsiders can't read anything.

Everything you said about Kaguya's eyes being the way they are because of the Shinju's fruit is fanfiction. Hagoromo said she had the Sharingan and the Byakuygan, that is all.