One interesting concept could be the combination of jutsu from Naruto and magic in Final Fantasy 8. For example, a character might use a Fireball Jutsu in the style of a Fire spell from FF8. Another could be the crossover of character relationships. Maybe Squall from FF8 forms an unlikely friendship with Naruto, and they learn from each other's strengths and weaknesses.
One interesting concept could be the combination of Naruto's ninja abilities with the job classes in Final Fantasy 14. For example, a character from Naruto might take on the role of a Black Mage in FF14, using their chakra in a way similar to how a Black Mage uses mana. Another concept could be the interaction between the different worlds. Maybe the Hidden Villages could exist in the same universe as Eorzea, and there could be diplomatic relations or even battles between the two. Also, the idea of characters from FF14 learning ninja techniques from Naruto characters would be really cool.
One interesting concept could be a crossover of the magic systems. In Final Fantasy XV, there's the use of elemental magic and powerful spells. In Naruto, there's ninjutsu. A fanfiction might explore how a character from one universe adapts to the other's magic. For example, a Naruto character learning to use the warp - strike ability from Final Fantasy XV in a battle. Another concept could be the interaction of the different races. The elves in Final Fantasy XV and the various clans in Naruto could have some really unique interactions, like how the Uchiha clan's sharingan might react to the magic - using races in Final Fantasy XV.
One interesting concept could be exploring the backstories of minor characters. For example, delving into the past of a random villager who might have a hidden connection to the main plot. Another concept could be alternate endings, like if the main character made a different choice at a crucial moment. Also, fanfiction might explore the relationships between characters in more depth, such as a deeper friendship or a romantic relationship that was only hinted at in the game.
One interesting concept could be a crossover of the powers. For example, Percy's water - controlling abilities from Percy Jackson combined with the magic systems in Final Fantasy. Maybe a character in the fanfiction could use Percy's powers in a way that's similar to how a Final Fantasy character uses their elemental magic.
In 'Harry Potter Final Fantasy 7 Crossover Fanfiction', there are many potential concepts. One is the idea of the different races in Final Fantasy 7, like the Cetra, interacting with the magical creatures in Harry Potter. How would a Cetra view a Hippogriff? And what if the Death Eaters were after the power of the Jenova Cells? It would create a whole new dynamic of power struggles and alliances between the two universes.
A cool crossover might involve the jutsu in Naruto being combined with the spells in Final Fantasy 14. Picture Sasuke using a spell like Blizzard III from Final Fantasy 14, but with his own Uchiha - style twist. Also, the ninja villages in Naruto could be compared to the city - states in Final Fantasy 14. The fanfiction could explore how the politics and power dynamics of both worlds interact when characters from each are forced to cooperate. Maybe the Hidden Leaf Village and Limsa Lominsa form an alliance to fight a common enemy that threatens both their existences.
One interesting crossover could be the characters from Naruto using the Materia from Final Fantasy 7. For example, Naruto with the Fire Materia could enhance his Rasengan with fire elemental powers. It would be a really cool visual to see.
A great Naruto Final Fantasy fanfiction idea is to combine the magic systems. In this story, shinobi could learn to use Final Fantasy - style magic, like black magic for offensive spells and white magic for healing. Or perhaps a plot where the Akatsuki is after a powerful crystal from the Final Fantasy world that could grant them ultimate power. Also, a fanfic about a character from Naruto traveling through different worlds of Final Fantasy, facing the challenges and enemies in each world.
One interesting concept could be the combination of different magic systems. In Kingdom Hearts, there's the Keyblade magic, and in Final Fantasy, there are various elemental and spellcasting systems. In fanfiction, they might blend these in unique ways, like a character using a Keyblade to cast a Final Fantasy - style spell.
One interesting concept could be exploring the backstories of minor characters. For example, the guards in Baron Castle might have their own motives and dreams that are not shown in the original game. Another concept could be alternate endings. Maybe Cecil and Rosa could have a different kind of ending where they choose different paths in life.