Perhaps the moment when Naruto uses his new and improved Rasengan techniques. He could combine different elements with the Rasengan, creating a super - powerful and visually stunning attack. For example, a Lightning - Rasengan that zaps through multiple enemies at once, with bright flashes of light and crackling sounds filling the air.
One of the most exciting scenes could be when Naruto first unleashes his Nine - Tails chakra in a full - blown rage. The red chakra would surround him, his eyes would turn into slits, and he would let out a powerful roar. As he charges into the army, the soldiers would be both terrified and in awe of his power.
If Naruto were to fight an army in fanfiction, he would bring his unique skills to the battle. Naruto is known for his never - give - up attitude. So, even if the army seems large and intimidating, he would keep fighting. He could use his Uzumaki bloodline abilities, like his strong life force and large chakra reserves. Also, his ability to make friends and allies might come into play. Maybe he would convince some members of the army to switch sides. His transformation into different forms, such as the Six Paths Sage Mode, would give him an edge in combat. With his speed, he could quickly move around the battlefield and take out key targets in the army.
In a Naruto fanfiction where he fights an army alone, he could win through his vast array of jutsu. His Shadow Clone Jutsu could be used to create multiple decoys, confusing the enemy. Also, his Rasengan, a powerful and concentrated chakra attack, could take out many foes at once. His Nine - Tails chakra might also give him a huge boost in power and endurance, allowing him to keep fighting against overwhelming odds.
Well, imagine a scenario where Naruto has to fight against an entire Fairy Tail guild at once. He would have to use all his skills and strategies to take on multiple opponents with different types of magic. Or perhaps a scenario where a Fairy Tail wizard uses a time - based magic on Naruto and he has to figure out how to fight in a distorted time - space while still using his ninja abilities. And then there's the idea of a tournament - style fight where Naruto represents the ninja world and Fairy Tail members represent their magical world. The different fighting styles and abilities on display would be super exciting.
The most exciting part would be when their powers clash. Imagine Percy summoning a huge tidal wave and Superman flying right into it with his super strength, trying to break through. Or when Superman uses his heat vision and Percy uses his water powers to create a shield of steam. It would be a visual spectacle.
The moment when Naruto first unleashes his new ultimate attack against Madara would be really exciting. Maybe it's a combination of his Rasengan and some kind of Sage power that creates a huge explosion of energy that Madara has to struggle to defend against.
In a 'naruto fights alone fanfiction', it could be that Naruto is on a mission in a foreign land where he has no support. The local ninjas are all against him for some reason. He has to use his Nine - Tails chakra in a more discreet way as he can't afford to go all - out and draw too much attention. He might befriend some local animals or spirits who help him in a more indirect way, like giving him information about the enemies' weaknesses.
In this fanfiction, the most exciting scene might be when Naruto's skewer - arrow shot has some sort of magical or special effect. For example, it could be that the skewer splits into multiple projectiles mid - air, hitting multiple targets at once. This would not only showcase Naruto's power but also add an element of surprise and excitement to the story. It could be a scene that makes the readers go 'Wow!'.
In this fanfiction scenario, Naruto could potentially use new and untested jutsu. He might draw on the power of his nine - tailed fox in a completely different way. Maybe he'd combine Sage Mode with some secret Uzumaki clan technique he discovers during the fight.
In such a fanfiction, Naruto could potentially win by using his new Sage of Six Paths powers to their fullest. He might be able to overpower Madara's Rinnegan abilities. For example, Naruto could use his massive chakra reserves to create countless shadow clones and overwhelm Madara in a battle of attrition.
Maybe an ancient evil ninja who was sealed away long ago but has now been released. This antagonist could have powers that nullify any communication or summoning jutsu, forcing Naruto to fight alone. He would be extremely powerful and know many forgotten and deadly jutsu.