Talk:Murasaki Uchiha/@comment-1399043-20191228173729/@comment-25754931-20191229011231

@Nisshou:

In the Anime it was shown that even Hagoromo, who was born with the Six Paths Chakra, just like Murasaki, only was able to manifest the Rinnegan simultaneously with his MS when he was forced to mortally wound his brother. The reason why no descendant of Indora and Ashura was ever able to inherit a portion of the incarnate chakra from his parents and thus the potential to awaken Rinnegan on the 'simple' way was because a male and female incarnate of them would not even in a dream be willed to have children with each other (due to their hostility). In the scenario you proposed, where Boruto and Sarada inherit part of the rebirth chakra and would pass this on to the offspring (resulting in giving them SPC), this possibility would finally be available. Then a Murasaki with Rinnegan would be stable again. In addition, Naruto and Sasuke could die before Sarada and Boruto had children, which could theoretically pass on their (full) chakra inheritance to them.

It is actually true that Madara (even with Hashirama’s/Ashura's chakra) did not awaken the Rinnegan until the end of its natural lifespan. However, according to an interesting theory published on Quora, Sasuke didn't get his Rinnegan simply because of Hagoromo (who only gave him the power to seal Kaguya and possibly the special Rinnegan ability Amenotejikara, as stated by Sasuke), but because of Kabuto. When he rescued Sasuke, he implied that he would revive him with Hashirama's cells/chakra (a rebirth of Ashura), which would give Sasuke the missing chakra half for the Rinnegan. Sasuke's near-death experience, combined with the Ashura-chakra supply, eventually led to the awakening of the Rinnegan and the encounter with Hagoromo in his subconscious. It is logical that Sasuke received the Rinnegan "directly" because of this near-death experience. Just remember, that Madara only got it shortly before the end of his natural life span because he could not get the opportunity to experience near-death in his hiding place in any other way. Besides, he didn't knew that near-death was a requirement.

I will shortly rewrite the reasoning accordingly to avoid such misunderstandings in the future.