One plot idea could be Naruto being betrayed by the Hidden Leaf Village. He then decides to use his powers for his own gain rather than for the village. He might form his own group of outcasts and fight against the village's corrupt leadership.
Another idea is that Naruto is influenced by a dark force. This makes him see the shinobi world in a different way. He starts to believe that the only way to bring true peace is by ruling with an iron fist. So, he becomes an anti - hero, challenging the traditional ways of the ninja world and making both friends and enemies along the way. He could even team up with some of the villains from the original story, but with his own motives.
A possible plot could be that Naruto fails to save Sasuke. This failure breaks him and he blames the shinobi system. He turns into an anti - hero and starts to dismantle the system from within. He uses his knowledge of the village and its secrets to expose the darker sides of the shinobi world. He might also try to create a new world order where things like the curse of hatred don't exist, but his methods are not always what people would consider heroic.
An interesting plot could involve an anti - hero who has a hidden agenda that is not entirely evil but also not in line with the traditional hero goals. Maybe they are trying to expose a corrupt part of the hero society from within. They could form alliances with some villains who also have a vendetta against the corrupt elements. This would create a complex web of relationships and moral dilemmas.
One idea could be Naruto suddenly finding himself in a world similar to 'My Hero Academia' and having to adapt to their different power systems. He might start teaching his ninja skills to the students there, creating a whole new dynamic.
One idea could be a time - travel plot where a character from the future goes back to the Naruto Hero Z era to change a major event. This could lead to all sorts of new alliances and rivalries.
One idea could be a Naruto who, due to some traumatic event, becomes anti - social. For example, he might lose all his friends in a sudden attack and then isolates himself from the village. He starts to question the values he once held and becomes a lone ninja, only focusing on his own survival and revenge.
One idea could be that the anti - heroes are forced to team up with the Justice League against a common enemy who is far more powerful and morally ambiguous than they are. This would create a lot of tension as they have to work within the League's rules while still maintaining their anti - hero ways.
For a Naruto anti - hero in the Justice League fanfiction, he could be a character who is on a quest for redemption. In the Naruto world, he may have done some things that he regrets. In the Justice League, he sees an opportunity to use his powers for good in a different way. He might have the ability to summon some of the Naruto creatures, like toads, and use them in battles against the League's enemies. His costume could be a mix of Naruto - style clothing and elements from the Justice League uniforms.
Well, it depends on the specific fanfiction. Some anti - hero Naruto in Fairy Tail crossovers might have really cool plots. For example, Naruto's anti - hero side could bring a new dynamic to the Fairy Tail world. He might use his skills in a more self - serving way at first, but then gradually find a new purpose. It could be about him facing off against Fairy Tail characters who don't trust him because of his anti - hero attitude, and then through various adventures, he earns their respect.
Well, you could do a fanfiction where Naruto teams up with villains from the series. Maybe he has to work with Orochimaru to stop a greater evil that threatens the entire ninja world. It would be a really interesting dynamic as Naruto has always been against Orochimaru. Or, how about a story where Naruto discovers a long - lost clan related to his Uzumaki heritage and has to learn their special techniques to save Konoha from a mysterious threat.
One idea could be that Naruto characters are transported to the My Hero Academia world and have to adapt to the different power system. For example, Naruto might be confused by the concept of Quirks at first but then find similarities to chakra. Another could be a training session where Deku and Naruto train together, with Naruto teaching Deku about his never - give - up attitude.
A cool plot could involve the sharing of techniques. Sasuke might teach Bakugo some of his sword skills, while Bakugo shows Sasuke how to better control his explosive power without overusing it. Also, the concept of the Ninja Academy in Naruto could be merged with UA High. Students from both could participate in a joint training session where they learn from each other's combat styles and strategies.