In a Naruto becomes a demon fanfiction, it might start with Naruto exploring an ancient and forbidden ruin. There, he accidentally activates a cursed seal that gradually makes him a demon. As he becomes more demonic, his appearance changes, his eyes turn red, and he grows horns. His friends like Sasuke and Sakura notice his strange behavior and set out on a journey to find a cure. Along the way, Naruto has to fight his inner demon, which tries to take over his mind and make him do evil things. They face many challenges and battles against those who want to use Naruto's newfound power for their own gain.
One possible plot could be that Naruto is exposed to a powerful and dark jutsu that slowly turns him into a demon. As he transforms, he has to struggle with his new nature. His friends initially fear him but then try to find a way to reverse the process.
Well, perhaps in this fanfiction, Naruto is tricked by an ancient evil entity. The entity implants a demon essence within him. Naruto then starts to gain demonic powers like enhanced strength and the ability to manipulate dark energy. His transformation could lead to a conflict within the ninja world, as some see him as a threat while others believe he can be saved.
Maybe Naruto is cursed by an enemy. As a fox demon, his appearance would change drastically. His hair could become more like a fox's fur, and he might grow a tail or two. His personality could also be affected. He might become more mischievous like a fox, but still retain his core values of loyalty and friendship. He would then have to find a way to break the curse while dealing with the changes in himself.
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.
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 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.
Well, perhaps Naruto's transformation into the Shadowman is the result of some strange experiment or a curse. He then has to struggle with controlling these new powers while still maintaining his identity as a ninja. He might use his new shadow powers to fight against enemies that are immune to normal ninja techniques, like some powerful dark entities. This would add a whole new dimension to his battles and his role in the Naruto universe.