IMadeThisOn8-1-2017 said:
Nah, both of his eyes have been normal.
So he should have a different key for Base and Rinnegan.
That was only for a
single scene in the Last. Every single piece of media before and after The Last show Sasuke with his Rinnegan constantly active. It's believed amongst the greater community that that
single scene in The Last was drawn incorrectly. It's a hilariously brief moment that stands out as an
outlier compared to the vast amount of scenes that show Sasuke's Rinnegan as permanently active. You literally can't find a picture of Boruto-era Sasuke in the anime or the manga that shows his left eye without his Rinnegan active, even when he's doing relatively casual things, such as knocking on Naruto's door or verbally interrogating a captive. It's literally why Sasuke grew his hair out to cover his left eye, so it wasn't constantly showing. The Rinnegan is constantly active once achieved; Madara, as well, was never shown with his eyes reverting back to normal after he activated the Rinnegan to absorb a Rasenshuriken as an Edo Tensei, until he was
literally blind and dying after re-emerging from Kaguya at the end of the series.
Even the Naruto wiki states this: "Should Sasuke's chakra reserves fall to a certain level, the tomoe vanish and the Rinnegan takes on the commonly known appearance."
Explain to me why you think that a single, erroneously-drawn scene from The Last justifies Sasuke having two seperate keys for Base/Rinnegan, when clearly the Rinnegan is constantly active (just hidden behind Sasuke's hair).
Boruto: The Next Generations Chapter 1, Page 58