The Power Of Transmigration

[Transcendence]

It's a really weird concept, but more likely than not, it involves the Shinju, being directly related to Kaguya. Remember, Black Zetsu was the one who tampered with the Stone Tablet, and his be all end all goal was to make sure one of the Uchiha or Senju transmigrants awakened the Rin'negan so they could get rid of the seal on the moon to release the Gedo Mazou. So Black Zetsu likely made many hints to getting the Rin'negan, including making it look like it was even more important than it actually was. Hagoromo was never hinted to have the RinneSharingan, and the eye tattoo isn't likely either. It's more reminiscent of the marking on his back which is a sign of Senjutsu, which makes sense given his moniker as a Sage.

 

[Xlad]

More likely the Holy Tree itself.

 

[VongolaX]

That's because no body knows that the holy tree's eyes itself is what is being called the third eye.

 

[AlphaScythian]

Obito stated that the only reason he was able to grant Kakashi chakra was because they had a close connection. He can't just do it to anyone.

No he didnt. He said chakra connects the worlds :vincent: