In a fanfiction where Naruto acts like Sesshomaru, the dynamic in the Naruto universe would be completely shaken up. Naruto's relationships would be the most affected. His friends like Sakura and Kakashi would be at a loss as to how to deal with this new Naruto. He would no longer be the one to quickly jump into a fight without thinking. Instead, he would assess the situation more carefully, like Sesshomaru. His appearance might not change much, but his aura would be completely different. He would carry himself with an air of superiority and detachment, which would be a huge contrast to his normal self.
If Naruto acts like Madara in the fanfic, he may begin to view the ninja world in a more cynical way. He could start to question the current system of peace and might try to reshape it according to his own vision, which would lead to battles with those who oppose him. Also, his relationships with characters like Sasuke would take a new turn, perhaps becoming more of a rivalry based on different ideologies.
The character development would be quite drastic. Naruto would start to lose his naivete and become more world - weary. He would stop believing in the good of everyone so easily as he used to. His interactions with his enemies would change from trying to understand them to simply seeing them as obstacles to be removed. This is a big shift from his normal character who always tries to find a way to redeem his foes.
Sesshomaru would likely be aloof and haughty at first. He might look down on Naruto as a mere human. Naruto, being his friendly self, would probably be curious about Sesshomaru and try to start a conversation. Sesshomaru might respond with cold remarks, but Naruto's persistence could gradually break through his icy exterior.
Sakura would be worried sick. She'd try to figure out what happened to Naruto to make him act this way. She might try to talk to him, use her medical ninjutsu to check if he's under some kind of genjutsu or has some other problem. She'd be very vocal about her concerns and would try to get the other villagers to help bring Naruto back to his normal self.
In a 'naruto acts like gin fanfiction', Naruto might be quieter and more observant. Instead of his usual boisterous self, he could be more like Gin, who is often sly and calculating. Maybe he would have a more subdued way of showing his power and a different approach to his enemies.
Well, one way the story could unfold is that Naruto would inherit some of Kratos' rage and strength. He might have an even more intense battle spirit. For example, in a fight against a powerful enemy like Pain, he could tap into that Kratos - like fury to overpower his foes. His physical abilities could be enhanced, making his Rasengan even more destructive.
In a Naruto in the Matrix crossover fanfiction, Naruto would bring his own values of friendship and loyalty. He'd be shocked at first by the lack of real nature in the Matrix. His training as a ninja would give him an edge in combat within the Matrix. However, he'd also have to learn about the Matrix's rules. Maybe he'd start by trying to find a way to use his chakra to hack into the system, much like Neo learned to manipulate the Matrix code.
In a fanfiction where Naruto is a samurai leader, things would be really exciting. Naruto has always been a character who breaks the norms. As a samurai leader, he might do away with some of the more traditional and rigid samurai rules. He would encourage his samurai to be more creative in their fighting styles. His own experience of growing up an outcast in the ninja world could make him more empathetic towards samurai who might be facing similar issues. He could also introduce the concept of chakra control to the samurai, which could enhance their swordsmanship and overall combat abilities.
In this fanfiction, the story might start with Naruto being recruited by Palpatine in a very sneaky way. Palpatine might disguise his true intentions well. As Naruto begins to work, he starts to notice the negative impact of Palpatine's actions on the people. Naruto's strong moral compass kicks in, and he tries to find a way to stop Palpatine without causing too much chaos. He might try to use his charisma and the relationships he builds in the Star Wars universe to create a resistance against Palpatine. It could be a story of Naruto's struggle between his loyalty to his new employer (at first) and his sense of what is right and wrong.
Well, if Naruto was a Jedi Master, he'd probably use his chakra in unique ways within the Jedi framework. His determination and never - give - up attitude would make him a great Jedi. He might teach other Jedi his ninja skills, like how to move stealthily. And his Rasengan could be transformed into some sort of Jedi - like energy attack. Maybe he'd form a special bond with his lightsaber, just like he did with his kunai in the Naruto world.