Board Thread:Naruto Discussions/@comment-26367861-20161025235033/@comment-24824859-20161026204422

You don't need the MS to awaken the Rinnegan. The only things required are the chakras of Indra and Asura, that's all. Only one Uchiha is born with Indra's chakra at a time and one Senju or Uzumaki is born with Asura's chakra at a time. The reason why Obito didn't awaken the Rinnegan, despite having Asura's chakra (from Hashi's cells) and Six Paths chakra he stole from TTJ-Madara, is because of one or two things: 1.) He certainly didn't obtain Indra's chakra and 2.)The Six Paths chakra he stole from TTJ-Madara wasn't Hagoromo's chakra. #1 is for certain, while #2 is iffy