Well, in 'naruto in wonderland fanfiction', perhaps Naruto is on a mission and accidentally gets transported to Wonderland. He'd use his ninja skills to navigate through the weird world. He could try to find a way back home while getting involved in the power struggles between the different Wonderland factions, just like how he deals with different ninja clans in his own world.
Sasuke would likely be very cautious at first. He'd be observing everything closely, trying to figure out the rules of this strange place. His Sharingan might give him an advantage in seeing through some of the illusions in Wonderland. Naruto, on the other hand, would probably be more excited and jump right into things, ready to make friends with the odd - looking creatures.
Well, it could be that Naruto is somehow transported to Wonderland. Maybe he meets the Cheshire Cat who gives him cryptic advice on how to get back home. He might also run into the Queen of Hearts and get into trouble because of his headstrong nature.
One interesting character could be the White Rabbit. In the fanfic, he could be a messenger who mistakes Naruto for someone else. Naruto would have to chase him to clear up the misunderstanding. Another would be the Queen of Hearts. She could be a powerful antagonist, trying to execute Naruto for not following her strange rules. And of course, Naruto's friends from his own world could also make cameo appearances in Wonderland in some magical way.
He could meet the Mad Hatter. The Mad Hatter would be an interesting character for Naruto to interact with as he's so unpredictable and has his own strange way of seeing the world.
In a Naruto Alice in Wonderland fanfiction, Naruto could be transformed into a character like the Cheshire Cat. His orange jumpsuit could turn into a purple and pink striped fur, and his whisker marks could become more cat - like. He would then use his new form to help Alice (or perhaps a character similar to her from the Naruto world) find her way through Wonderland, all while cracking jokes and using his Naruto - like wisdom.
One idea could be a crossover where Naruto characters are trapped in Deadman Wonderland. For example, Naruto could use his shadow clones to deal with the various challenges and enemies in the prison. Another idea is to explore how the powers in Deadman Wonderland would be used by Naruto characters. Maybe Sasuke could master some of the blood powers in a unique way. And a third idea could be a story where the main Naruto characters have to form alliances with the Deadman Wonderland inmates to escape the prison together.
Another plot could involve the villains from both worlds. Orochimaru from Naruto might be interested in the strange powers and experiments in Deadman Wonderland. He could form an alliance with some of the bad guys there. Meanwhile, the heroes from both universes have to come together to stop this dangerous union. They would have to combine their different fighting styles and strategies to face this threat.
Begin by choosing a main character from either Naruto or Deadman Wonderland. If you pick Naruto, consider how his ninja skills and values would interact with the harsh reality of Deadman Wonderland. You could start by creating a scenario where Naruto is thrown into the prison without understanding what's going on. Describe his confusion and then how he starts to adapt. Maybe he first tries to use his talk - no - jutsu on the guards, which of course doesn't work as expected. This would set the stage for the story to unfold. Also, don't forget to plan out the overall arc of your fanfiction, whether it's about survival, escape, or something else.
Naruto, on the other hand, would approach it with his usual optimism. He would try to make friends with as many people as possible. He would see the oppressed in Deadman Wonderland as people he needs to protect. He would use his Rasengan and other jutsus in creative ways during the battles there. He might also try to bring some of the Naruto - world values like friendship and loyalty to the rather cut - throat world of Deadman Wonderland.