Sasuke is now immortal

[Mari Makinami]

Sasuke always was immortal, since he will simply reincarnate after his death, for he's Indra

 

[SenseiSama]

Where's all of this coming from?

Rinnegan's Outer Path ability has the power to teleport dimensions, one of the worlds it has access to is the Pure World proven by Rinne Tensei and when Hago summoned souls like Edo Tensei, and also by his children along with Obito managing to transmigrate into the impure world

 

[NukaCola]

Everything that comes from a brony is wrong and should be mocked.

 

[Megax Rocker7]

He can extend his life if he summons the gedo and absorbs it but he can't be immortal unless he becomes a JJ.