Board Thread:Theories and Speculation/@comment-734582-20150712141917/@comment-9782468-20150915164907

@LegionZero that's actually a really good point, hadn't thought of that. It makes sense.

But then again, even with Senju/Asura, Madara took many years to awaken the Rinnegan. Maybe Hagaromo had to awaken it too, maybe he had to learn to properly combine his physical life force and vitality to his already powerful eyes