[Rachy]

Originally Posted by Kyu410

Spoiler for Manga Question:

Why is it that FR hurts Naruto when Oodama Rasengan doesn't? I mean all he did was add water/wind element to it.

Spoiler:

It's the FRS that hurts Naruto when he uses it, It takes the wind chakra and uses shape manipulation to change it into countless needles and does cellular damage to himself and the victim (Not nearly as much though).

Spoiler for Manga Question:

Why can't Naruto control his 4-tail state?

Spoiler:

By that stage he's no longer conscious.