Board Thread:Theories and Speculation/@comment-34661853-20181111160651/@comment-32685487-20181113065740

So according to this logic, Naruto should have ALSO awakened the Rinnegan, and since Naruto did indeed gain a Hashirama arm that means one thing.. You need the Sharingan too, to be able to awaken the Rinnegan. As ONLY Madara and Sasuke have awakened it after Hagoromo and they have 3 things in common: Sharingan, EMS, and are transmigrants.