There has been a lot of talk of characters, such as Naruto or Sasuke "awakening the rinnegan. This is basically impossible.
Only Two people have "awakened" the Rinnegan.
1) The Sage of the Six Paths was presumably born with the Rinnegan.
2) Madara awakened the Rinnegan after putting Senju DNA into his body. (Madara gave his rinnegan to Nagato and Obito took one of those Rinnegan.)
There is no evidence of anyone just spontaneously getting the Rinnegan.
Even if Naruto somehow obtained Uchiha/Hyuuga DNA or Sasuke obtained Senju/Uzumaki DNA, Madara said it took many years until he got the Rinnegan.
Only Two people have "awakened" the Rinnegan.
1) The Sage of the Six Paths was presumably born with the Rinnegan.
2) Madara awakened the Rinnegan after putting Senju DNA into his body. (Madara gave his rinnegan to Nagato and Obito took one of those Rinnegan.)
There is no evidence of anyone just spontaneously getting the Rinnegan.
Even if Naruto somehow obtained Uchiha/Hyuuga DNA or Sasuke obtained Senju/Uzumaki DNA, Madara said it took many years until he got the Rinnegan.