His character might also become more empathetic. As he glares at Sirzechs' power, he could start to understand the responsibilities that come with great power. Through interactions with Sirzechs or observing how Sirzechs uses his power, Naruto might learn to be more understanding of others with great power and the choices they have to make. This could lead to a more well - rounded Naruto who not only has physical strength but also emotional intelligence.
Well, in this kind of fanfiction, Naruto might glare at Sirzechs' power out of jealousy. Maybe Naruto, being used to his own strong powers in his own universe, is suddenly faced with Sirzechs' overwhelming power and it makes him feel a bit insecure. So he glares as a sign of his internal struggle with the new power dynamic he's facing.
The plot could develop with Naruto trying to oppose Sirzechs at every turn. He might gather his friends and allies to form a resistance against Sirzechs' plans. For instance, if Sirzechs is trying to impose a new order in a shared fictional world, Naruto would fight to protect the old ways that he believes in.
In a fanfic where Naruto kills Sirzechs, it could be a very interesting concept. Maybe it's a crossover universe where the power dynamics are completely different. Naruto, with his powerful jutsu, might have a reason like protecting his own world from a perceived threat by Sirzechs. However, it also depends on how the author has set up the story, the rules of the world they've created, and the motives given to Naruto for such a drastic act.
One possible scenario could be that Naruto somehow ends up in the world where Fem Sirzechs exists. Maybe through a strange rift in space - time. They could start as allies, with Naruto's powerful jutsu and Sirzechs' own formidable abilities combining to face a common threat. For example, they might battle against a powerful dark force that threatens both of their worlds. Naruto's positive attitude could also influence Fem Sirzechs in ways that change her perspective on certain things in her world.
Rock Lee with his incredible taijutsu skills could be a part of the peerage. His determination and physical strength would be assets. Neji, before his death, with his Byakugan and combat abilities might have been a suitable addition as well. And Hinata, with her gentle nature yet strong Byakugan - based skills, could also be considered for the peerage.
He could also feel angry. After all, he has fought for his friends and the village. To be betrayed by someone like Sirzechs would make him want to prove his innocence. He might start training even harder to show that he is not the bad guy Sirzechs is making him out to be. And he would likely try to find evidence to clear his name.
Often, Naruto in these fanfictions will have to face the consequences of his power hunger. He may lose the trust of his friends initially, which could then lead to a realization that power isn't everything. His development could then take a turn where he tries to regain what he has lost while still holding onto his new - found strength in a more balanced way.
Naruto may become more confident. With supreme military power, he no longer has to struggle as much as before. This new - found strength could make him more self - assured in his decisions and actions.
At first, Naruto might be overconfident with his reality - controlling power. He'd probably use it without thinking, like getting instant ramen whenever he wants. But as time goes on, he realizes the responsibility that comes with it. He starts to use it more carefully, for example, to heal the wounded or prevent natural disasters in the shinobi world.
He would likely become more responsible. Since he has such a powerful ability, he knows he has to use it for the good of the village. He may start to take on more leadership roles, as he can now analyze situations more thoroughly in the frozen time. He'll also become more empathetic as he can use the time - stopping to understand his friends' and enemies' situations better. For instance, he could stop time to study an enemy's past and find out what made them the way they are, and then try to help them instead of just fighting.