Board Thread:Naruto Discussions/@comment-26488946-20150630094329/@comment-734582-20150701113737

JOA20 wrote: The Rinnegan is undoubtedly rare. Only two shinobi after Hagoromo could manifest it.

And, about Madara and Izuna being the first ones to awaken the Mangekyō, it's wrong. Maybe Madara was the first to gain the Eternal Mangekyō Sharingan, but that's it.

Obito didn't fulfill the conditions required to awaken the Rinnegan: he had only Hashirama-imbued Zetsu cells, which gave him a portion of Asura's power, but he didn't have the chakra of Indra's trasmigrant, at least not to our knowledge. 1: yes, but Madara was probably the first to understand how to get it. 2: Sure, but according to Itachi madara was the first. Hence, since Indra nobody likely did awaken it until Madara. 3: the sharingan is essentially a remnant of Indra's power just as longevity is of Asura's.