One way is through power - up scenarios. For example, a character in the Fairy Tail fanfiction could obtain EMS - like abilities which enhance their existing magic. This could be due to some magical experiment gone wrong or right that fuses Naruto - style power with Fairy Tail magic.
It could be integrated in the form of a crossover character. Imagine a character from Naruto who has EMS ends up in the Fairy Tail world. This character would bring their unique powers and skills, and their EMS would interact with the magic system of Fairy Tail. They could teach other characters about the concept of EMS and how to use it in combination with magic.
Another method is through a plot device. The EMS could be a sought - after power source in the Fairy Tail world in the fanfiction. Different guilds or villains could be after it, believing it to hold the key to ultimate power. This would create a whole new storyline where the Fairy Tail characters have to deal with the implications of this Naruto - based power in their world.
First, you need to have a good understanding of all three universes. Know the powers, the characters, and the storylines. For example, in Naruto, EMS gives unique abilities, and in Fairy Tail, magic is diverse. Combine these elements in an interesting way. Maybe have a character from Fairy Tail gain EMS - like powers.
The concept of destiny could also be a shared element. In Naruto, characters often have a pre - determined path related to their powers. In Fairy Tail, there are prophecies and destinies for some characters. In fanfiction, the EMS in the Fairy Tail setting could be part of a character's fated journey, like being the key to fulfilling a great prophecy in the Fairy Tail universe.
One way could be by having Gogeta arrive in the Fairy Tail world through a magical portal. Maybe he's on a quest in his own universe and gets accidentally transported to the Fairy Tail realm. He could then interact with the Fairy Tail guild members, perhaps even joining them on some of their adventures and using his unique powers to help out.
One way could be through a magical portal. Maybe a portal opens between the Naruto world and the Fairy Tail world, and the knowledge of Hiraishin spreads in Fairy Tail. Another way is if a Fairy Tail mage somehow travels to the Naruto world, learns the Hiraishin, and brings it back.
One way to integrate Escanor's powers into Fairy Tail fanfiction is by having him participate in the Grand Magic Games. His 'Sunshine' power would be a show - stopper during the games. He could face off against strong mages like Laxus and use his sunlight - based attacks to counter Laxus's lightning magic.
In fanfiction, the Mangekyou Sharingan's unique abilities like Amaterasu (the black flames) could be combined with Fairy Tail's elemental magics. Imagine a character using Amaterasu - like flames in combination with fire - based Fairy Tail magic to create an even more powerful and destructive attack.
One way could be through a magical portal. Maybe a spell gone wrong in the Harry Potter world creates a portal that leads to the Fairy Tail universe. Harry's family could then be part of the adventure there, with his parents' magical skills being useful in the Fairy Tail guild. For example, his father James could use his Animagus ability to help in a mission where stealth is required.
One interesting fanfiction could be about a character from Naruto who somehow gets transported to the Fairy Tail universe and has to deal with the magic there while still having their EMS powers. For example, Sasuke could end up in Magnolia and form an unlikely alliance with Natsu to fight a common enemy.
In fanfiction, a writer can make Naruto part of Fairy Tail fanfiction by creating a crossover scenario. For example, they could write that Naruto somehow ends up in the Fairy Tail world through a magical portal. Then he might use his ninja skills in the Fairy Tail universe, like fighting alongside the wizards of Fairy Tail against common enemies.
In fanfiction, one way to combine EMS (Eternal Mangekyou Sharingan) and Rinnegan powers could be through a powerful jutsu. For example, a character might create a new form of ninjutsu that draws on the unique abilities of both. The EMS could provide enhanced visual perception and the ability to cast powerful genjutsu, while the Rinnegan could offer control over different elements and the six paths techniques. They could be combined in a way that allows for teleportation between different dimensions, using the space - time manipulation aspects of both powers.