In a 'naruto becomes a witcher fanfiction', Naruto would likely face challenges adapting to the Witcher world. He'd have to get used to the different types of monsters and the way magic works there. His Rasengan could potentially be modified into a Witcher - like power move. He may also encounter difficulties with the Witcher's code and ethics, as he has his own set of values from being a ninja. But in the end, he could become a great Witcher, respected for his unique abilities.
One possible plot could be that Naruto, while on a mission in a strange new land, stumbles upon a portal that transports him to the Witcher's world. There, he meets Geralt and they initially have a misunderstanding due to their different cultures. But as they face a common enemy, like a powerful dark magic - using creature that is terrorizing the local villages. Naruto's unique jutsu abilities combined with Geralt's monster - hunting skills make for an exciting battle. They learn from each other's fighting styles and Naruto also gets to experience a different form of magic in the Witcher world.
One possible plot could be that Naruto, while on a strange mission, gets transported to the Witcher's world. He teams up with Geralt to hunt a powerful demon that has the ability to control minds. Naruto's unique ninja skills, like his shadow clones, would be very useful in distracting the demon while Geralt figures out its weakness.
In this fanfiction, Naruto would interact with Vesemir, the old and wise Witcher. Vesemir could see Naruto's potential and help him understand the history and traditions of the Witchers. Naruto would also run into the various monsters in the Witcher world. Instead of just fighting them right away, he might try to communicate with them first, like he did with some of the tailed beasts in his own world. His interactions with these creatures would be unique and could even change the way Witchers view certain monsters.
Perhaps in the fanfiction, Naruto is on a mission in a foreign land and stumbles upon a group of people who are all fans of Lunney. They introduce Naruto to Lunney's art or stories, and he is immediately captivated. This newfound interest could lead him to question some of the traditional ninja values he grew up with. He might then embark on a journey to reconcile his old beliefs with the new perspectives he has gained from Lunney. This internal struggle could be a major part of the story, with Naruto having to face opposition from some of the more conservative ninja in the Leaf Village who don't understand his new passion.
One possible plot for 'naruto becomes a ghost fanfiction' is that Naruto sacrifices himself to save the village. As a ghost, he discovers new abilities like being able to possess people or objects. He uses these powers to protect Konoha from threats that the living ninjas can't handle. He might also have to deal with his own unfulfilled desires and relationships in this new ghostly form.
Maybe Naruto discovers Bakugan during one of his travels outside the Hidden Leaf Village. He could be intrigued by the unique powers and battles of Bakugan. He might start collecting them and use his ninja skills to master the Bakugan battles, making new friends in the Bakugan world who are also impressed by his ninja abilities.
One possibility could be that Naruto is somehow transported to a realm where he meets Thanoso. Maybe he has to learn Thanoso's special abilities to defeat a new, powerful enemy in his own world. He could start training under Thanoso and gradually adopt some of his characteristics in combat.
One possible plot could be that Naruto is somehow cursed or transformed into a succubus. He might initially struggle with his new form, having to deal with new instincts and powers. For example, he could find himself having an unexpected allure that affects his friends and foes alike. He would then have to learn to control these new aspects of himself while still trying to protect the village and his loved ones.
One possible plot could be that Naruto, through some mysterious jutsu gone wrong, starts to take on aspects of Menma's personality. He might become more laid - back and carefree like Menma. This could lead to some interesting interactions with his friends. For example, Sasuke might be really confused at first, seeing Naruto so different. And Sakura might try to figure out what happened and how to bring the old Naruto back. The story could also explore how Naruto's new - found Menma - like qualities affect his ninja training and his relationships with the villagers.
Well, maybe Naruto gets transported to the world of ponies. He could use his ninja skills in a new way there, like using his speed to compete in pony races in a really unexpected way for the ponies.