Is Naruto strong even without nine tails?

Naruto without Kurama isn’t as powerful as Naruto with Kurama, obviously. But the Gap in power isn’t as extensive as you might believe, and Naruto certainly is still one of the most powerful shinobi even without Nine-Tails Chakra. TLDR: Naruto isn’t ‘nothing’ without Kurama, and he and Sasuke would still be equals.

Why didn’t minato use a different seal?

Minato himself could barely withstand the Yin half of Kurama so he had to split it up and seal only the Light/Yang half in Naruto. Thirdly, Minato knew it wasn’t strategically smart to seal Kurama all in one vessel because that meant it would be far easier to acquire his entire power.

Why did Minato only seal half of Kurama into Naruto?

As for why he only sealed Half of Kurama into Naruto, As per This answer, He couldn’t seal all of Kurama into Naruto. Minato’s Wiki entry notes that it was because Kurama was too powerful to be sealed into a newborn infant.

What happened to the 9 tails when they protected Naruto?

A lot of these are speculative, but the main thing is that when they protected Naruto, they took critical injuries and likely were not going to live after that. Minato knew the only thing he could have done to properly seal the 9 tails fast enough was the Reaper death seal.

Did Minato and Kushina seal the Kyuubi?

But if you look more detail, actually in Episode 432 Kushina seal half of the kyuubi on her own and minato did the hakke fuin to seal the other half in Naruto. Which make a lot of sense, do you know that after bijuu extracted from a jinchuriki they can get back to alive if the bijuu reseal? Like what Minato did to Naruto when he lose Yang Kurama.

Can Minato survive the Reaper?

The thing is, That will kill the user, as the reaper takes their soul when its released. Orochimaru survived the reaper, but he summoned it using a mask instead of the jutsu, and it still cost him his body. Minato on the other hand, can’t do any such thing, so him surviving this encounter is out of the question.