A possible fanfiction could involve a Fairy Tail mage getting the Mangekyou Sharingan somehow. This could lead to them having to deal with the dark side of the Sharingan, like the loss of eyesight over time. At the same time, they could use the Sharingan's powers, such as predicting opponents' moves, to become a stronger mage in the Fairy Tail guild.
Well, in some 'naruto of the mangekyou sharingan fanfiction', there might be a plot where a character discovers a hidden power within the Mangekyou Sharingan that was previously unknown. This power could be related to time - like being able to freeze time briefly in a battle. Or perhaps a story where the wielder of the Mangekyou Sharingan has to make a difficult choice between using its power for good or succumbing to the dark temptations that often come with such a powerful ability. It could lead to an internal struggle that shapes the character's journey.
Well, in some fanfictions, the immortality aspect might lead to really cool plotlines. Imagine Naruto characters like Sasuke or Kakashi becoming immortal and interacting with Fairy Tail's immortal characters like Zeref. They could exchange knowledge about their different forms of power and how to control their newfound immortality. Also, the guilds in Fairy Tail and the ninja villages in Naruto could form alliances based on this new shared situation of having immortal members.
One interesting crossover could be a story where the magic system of Fairy Tail is introduced to the ninja world of Naruto. Madara, with his powerful abilities, could either be intrigued or threatened by the new form of power. For example, he might try to incorporate the magic into his own plans for domination.
A crossover could involve Kaguya having some connection to the powerful entities in Fairy Tail. Maybe she has some ancient power that is related to the magic in Fairy Tail's world. And the characters from both universes have to figure out how to deal with this new threat or opportunity. It could lead to some really unique character interactions, like Natsu and Naruto working together. Natsu's brashness and Naruto's determination would make for an interesting dynamic. And then there's the mystery of Kaguya's motives in this new context.
One interesting crossover could be a story where Naruto and Lucy meet in a magical world that combines the elements of the Naruto universe and the Fairy Tail guild. Maybe they team up to fight a common enemy that threatens both their worlds, like an evil wizard who wants to steal chakra and magic alike.
One interesting plot could be that Evil Naruto uses his Mangekyou Sharingan to manipulate the memories of the villagers. He makes them believe false things about their past and present, causing chaos in the village. For example, he could make them think that their friends are enemies, turning the village against itself.
One interesting concept is the combination of powers. In fanfiction, often the Mangekyou Sharingan and Rinnegan abilities are merged in unique ways. For example, a character might be able to use Susanoo with the added space - time manipulation of the Rinnegan. Another concept is the backstories created for how characters obtain these powerful eyes. It could be through some long - lost family heritage or a strange encounter with a powerful entity. Also, the exploration of the psychological effects of having these eyes is fascinating. Characters may struggle with the newfound power and the moral implications that come with it.
One idea could be exploring a different origin for the Mangekyou Sharingan. For example, what if it was related to an ancient Uchiha pact with a hidden spirit? Another could be a story where a non - Uchiha character somehow gains the ability to use the Mangekyou Sharingan and has to deal with the consequences. Or perhaps a fanfiction where the Mangekyou Sharingan has additional powers that are not shown in the original Naruto series, like the ability to time - travel.
The Sharingan in such a fanfiction could be used as a tool for a Fairy Tail character to gain an edge in their battles. They might initially struggle to control it, but as they learn more about it, they become a formidable force. For instance, they could use the Sharingan's genjutsu abilities to deceive opponents in the Fairy Tail battles.
The crossovers that involve a combined guild or village are also fascinating. Imagine a place where Fairy Tail wizards and Naruto ninjas train together. In these fanfictions, there are often new rules and hierarchies created, and seeing how the different characters from both series interact within this new structure is very engaging. There are often rivalries and friendships that form in unexpected ways. For instance, Erza might become friends with Hinata because of their similar strong - willed natures, but at the same time, Natsu and Naruto could be competing to see who is the strongest in this new combined place.