Well, it could be that Naruto, with his ninja skills, sees the Joker causing chaos in his world which has somehow merged with the DC universe. He might use his Rasengan to take down the Joker. Maybe the Joker has a new evil plan involving stealing chakra or something, and Naruto just won't stand for it.
Well, it could start with the Joker causing mayhem in a village in Naruto's world. Naruto, being the hero, tries to reason with the Joker at first. But when he realizes the Joker is beyond reasoning, he uses his ninjutsu skills. He might start with some basic fire - style jutsu to test the Joker's limits and then progress to more powerful attacks like his Nine - Tails Chakra Mode attacks until the Joker is defeated.
Well, one possibility could be that Naruto's powerful ninjutsu skills give him an edge. He might use his Shadow Clone Jutsu to confuse the Joker and then land a fatal blow with a Rasengan. Another aspect could be Naruto's strong sense of justice which drives him to take out the chaotic Joker in the Justice League universe.
It's a really wild idea. On one hand, Naruto has the power to take on the Joker. His chakra abilities like the Rasengan could potentially be a deadly weapon against the Joker. But on the other hand, the Joker is a master of psychological warfare, which Naruto may not be used to dealing with. In a fanfiction, it would be fascinating to see how the writer would make these two characters interact and how Naruto would ultimately defeat the Joker.
One possible plot could be that Naruto, with his sense of justice, witnesses the tyranny of the Celestial Dragons. He decides to take action when they harm his friends or innocent people. He uses his ninja skills, like his shadow clones and rasengan, to fight them. In this fanfiction, Naruto might be on a journey in the One Piece world where he encounters these despicable Celestial Dragons.
In such a fanfiction, perhaps Kawaki is driven by some extreme ideology. Maybe he believes Naruto's way of peace is a weakness and decides to take him out to change the ninja world in a more radical way.
One possible plot could be that Zeus somehow gets involved in the Naruto universe and starts causing chaos. Naruto, being the hero, decides to take him on. He could use his shadow clone jutsu to confuse Zeus and then land a powerful Rasengan on him. Maybe Zeus underestimates Naruto's abilities and is caught off guard, leading to his defeat.
Maybe a dark force takes over Naruto's mind. This force could be an ancient evil that has been sealed away for centuries and now wants to create chaos in the ninja world. It uses Naruto as a puppet to kill Tsunade, one of the most powerful protectors of the village. The story could then focus on Naruto's friends trying to free him from this control and avenge Tsunade.
In the 'kushina kills naruto fanfiction', perhaps there's a misunderstanding that leads to this extreme situation. For example, Naruto could be framed for something really bad, and Kushina, believing the false information, takes drastic action. It's a really twisted concept compared to the original story where family is so important.
The plot could involve Kakuzu being controlled by a more powerful and evil force. Naruto, after trying to reason with him and failing, has no choice but to kill him. This could also be a part of Naruto's growth, where he realizes that sometimes, in the face of extreme evil, killing is the only option to protect others.
In a 'Naruto kills Gato' fanfiction, the plot could start with Gato's continued oppression in the Land of Waves. Naruto, having witnessed the suffering of the villagers, decides he's had enough. He uses his Shadow Clone Jutsu to surround Gato and his men. With a swift combination of Rasengan and his ninja skills, he takes Gato by surprise and defeats him, thus liberating the Land of Waves in a more direct and violent way compared to the original story.