There is prep time. Otherwise he would've used it immediately. There is a reason he hasn't used it in the sequel.
he was already using it, the fact that Zeref was not healing is a factor the entire fight. He doesn't use it because it would burn him. Gray doesn't use it because he does not want to kill his comrades.
Not true at all. He used FoE after Lucy brought him back. He wasn't able to use it at any time before that moment. Yea because Natsu is afraid of getting burned lmao.
The fact Zeref was not healing his wounds would say differently, it doesn't matter if it was before or after, the fact Natsu did it means it was already active. That does not mean he wasn't using it at the time. So you are saying he should kill his comrades whenever he wants to? that is not within his character. Provide Proof that he wants to kill his comrades without Darkness
No it doesn't. Once he used it, Zeref couldn't heal. Zeref healed after DF and FDK. FoE doesn't make him murderous. He literally says this is for the guild. FoE is powered by his comrades.
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You clearly didn't understand the analogy.
That was when he first hit Zeref and he has not healed since with his time powers. Savage Flames basically warps reality to make his time powers useless and destroy FH. Natsu (besides END) never had murderous intent, you are talking about Gray.
FoE isn't accessible at will. That is a fact. He wasn't able to use it until he got a massive PoF boost after Lucy brought him back from the dead.
yes it is, nothing restricts one's emotions unless you have a power to restrict emotions. Lucy just revived him, that is all. They can use it , but they don't want to use Darkness or Savage Flames
No it isn't. It takes a massive PoF boost which doesn't happen right away. Every fight we've seen, those power-ups take time. You can't show me a single fight where the character got a PoF boost immediately.
yes it is, and yes it does, the fact Zeref isn't healing from the first punches means it is in affect. Nothing states it takes time, it is just momentary phenomenons. Juvia got PoF for a moment when he got restricted her emotions.
Yea so using it at the end of his fights means it doesn't take time. So why didn't Natsu use it at the beginning when they were exchanging punches? Or before Zeref got FH? It takes time.
That makes no sense. He'd rather risk death than wanting to "upset" his friends. Or burn himself out? That makes no sense
he just didn't use it then, there is a difference, That was before, this is now which no one dies for their friends, they live for them.
Oh so he casually decided not to? Ok......Anyways no, it takes time to get a PoF boost.
Head canon again lmao. If Natsu could use it whenever, he would. Wendy could just heal him up easy.
It is. Natsu wasn't enjoying himself and wanted to take him out right away. If he could use it, he would've.
Natsu would not risk dying to upset his friends, that is not how it works, even that is not enough to kill an immortal. Wendy is at the ocean, too far to walk to get healed. Even fire wizards are not immune to fire attacks, unless you are a DS, even then when you reach a heat that warps reality, that is when you are burned. What is your deal with being murderous? that is not what that is. that is Gray's Darkness
Natsu cannot use it dude at will. That's it. If he could, he would. You keep saying "If this" and "if that". All headcanon. I'm done with this part since I've proved you wrong already.
yes he can, it would hurt himself though, it is a double edge sword technique. You are already proven wrong so You are done indeed. Savage Flames can kill Natsu as it burns him we have seen him burned before and his Savage Flames are more dangerous, he does care if it means making his friends not worry. Not I said Darkness makes Gray murderous, not Natsu