Board Thread:Naruto Gaiden/@comment-4271790-20150625052107/@comment-24357950-20150628071850

BigBadBruin343 wrote: You need the chakra of Asura and Indra. It doesn't matter if you have Senju and/or Uzumaki blood along with Uchiha, you need Asura and Indra's chakra.

Matako wrote: [...] However there is of course the argument that Rinnegan might just be limited to the incarnations of Asura and Indra.

I already said that in the same comment you've quoted.