Board Thread:Versus Debates/@comment-30966312-20180413200754/@comment-27924662-20180421113654

JohnCenaNation wrote: No, she's actually immortal as in "come back from the dead" immortal. The Biju possess the power of reincarnation. The Juubi is made from them, so it possesses that power too (which is why it got sealed and not just destroyed). Kaguya, in her revived state, had the same power as the juubi. So yea, if she dies she reincarnates. It's why she can only be sealed. Deadless immortality ? What is that? Anyhow I am pretty sure Kaguya is on highest Tier of Immortality. Also I am pretty sure she posseses perpetual reincarnation too since portion of her chakra possess that power and this is the main reason why Hagoromo splits Jubi chakra into 9 bijus. Hidan would be on very high tiers, considering how he needs nourishment to survive.

According to Vs Battles Wiki, she is only immortal in Type 1 and 3, which is eternal life and regeneration, not type 5 which is deadless immortality. Plus have we really seen a biju come back to life from death at all in Naruto? Cause I read the manga, and haven't seen anyone come back to life from death with the exception of jutsus. Also immortality =/= invincibility. While Kaguya is immortal, she can't keep fighting forever and would still lose in a fight, just like Ban from Seven Deadly Sins lost to a female Holy Knight.