Board Thread:Theories and Speculation/@comment-1512913-20150221101637/@comment-1944809-20150224232404

Elveonora wrote: Why else would it be called Rinne Sharingan if it didn't have any Rinnegan powers? Not to mention it also has the trademark circles. You basically say this: Rinne Sharingan - devolves into Sharingan - evolves into Rinnegan The problem is, the Sharingan evolves into the Mangekyou Sharingan instead of back into the Rinne Sharingan or Rinnegan and the Mangeykou Sharingan evolves into the Rinnegan and 2 Rinnegan are needed for Rinne Sharingan. Why didn't Kaguya display any Rinnengan abilities? The only possible ability is the chakra absorption technique she had, which could or could not be Preta Path. But the ability to absorb chakra isn't exclusive to the Rinnengan, and the 4th DB didn't list her as a user of Preta Path (though then again, it could have been another mistake). The only reason people assumed that the Rinne Sharingan is a combination of Rinnengan & Sharingan is because it looks like that, but then again, it was never actually shown to be the case.

But yeah, that's what I think. The Rinne Sharingan devolved into the Sharingan, but then evolved into something new, the Rinnengan, which is connected to the Rinne Sharingan.