Board Thread:Boruto Discussions/@comment-34938099-20180619182027/@comment-33731988-20180620115549

Ravenlot 27 wrote: Jentaisenpai wrote: Wait hold on, wasn't Hagoromo the first person to unlock the Rinnegan? Because the other Otsutsuki members had a Rinne-sharingan and I thought that wasn't the same thing. But maybe somewhere in another universe there's another person with a legitimate Rinnegan. I don't recall any Ootsutsuki wielding Rinne Sharingan except for Kaguya, while her case isn't really common for the clan (she ate the Chakra Fruit as a whole, as opposed to the clan's tradition of producing chakra pills from it). If you were to mention Urashiki, the nature of his doujutsu isn't really clear at this point, but as far as we know Rinnegan also can be red (Momoshiki) and contain tomoe (Sasuke).

But the eye thing on Momoshiki's hand...wasn't it a Rinne-sharingan or did I just mistake it? If it's just a red Rinnegan then ok I guess Hagoromo was the first to unlock it on earth but probably there's some kind of other entity in this or any other universe that has unlocked the Rinnegan.