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 popular trope is the 'Fish out of Water' story. For example, a character from Naruto suddenly finds themselves in the world of Final Fantasy XV or vice versa. This allows for a lot of exploration of the differences between the two universes, like the magic systems or the social structures. Another common trope is the 'Power - Up' trope. A character might gain new abilities from the other universe, like a Naruto character learning some of the unique combat skills from Final Fantasy XV.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a wide variety of fanfictions. Just search for 'Naruto Final Fantasy XV' in their search bars, and you'll be presented with numerous options. Some may be crossovers that combine the storylines, characters, and worlds of both Naruto and Final Fantasy XV in really interesting ways.
One of the popular pairings could be Naruto and Noctis. Naruto's energetic and determined nature combined with Noctis's brooding and powerful presence can create some interesting dynamics. They both have a strong sense of duty towards their respective kingdoms/villages. Another could be Sasuke and Prompto. Sasuke's cool and aloof attitude along with Prompto's more light - hearted and friendly nature can make for a fun contrast in a fanfiction.
In some fanfictions, Luna and Noctis are given alternate backstories. Maybe they met as children in a completely different way than in the game. This changes the dynamic of their relationship, making it more of a long - standing friendship that gradually turns into love as they grow older.
The story of Final Fantasy XV is complex. It mainly follows Noctis, the prince of Lucis. He embarks on a journey with his friends - Gladiolus, Ignis, and Prompto. Their quest is to reclaim his kingdom from the empire that has invaded. Along the way, they face many challenges and battles. There are also elements of magic and a deeper lore involving the crystals which are important to the world's power balance.
The story of Final Fantasy XV is engaging. It follows Noctis, the prince, on his journey. The plot has elements of friendship as Noctis travels with his comrades. There are also political aspects as his kingdom is in turmoil. However, some parts of the story feel rushed and could have been developed more fully.
There are indeed fanfictions about Cindy. A lot of them explore her backstory. Since she is a mechanic in the game, some fanfictions might delve into how she learned her skills, her family background that might have influenced her career choice, and how she became such an important part of the game's world. These fanfictions can add more depth to her character.
Another theme is the adaptation of characters to new environments. In crossovers with a post - apocalyptic world like in 'Mad Max', the characters of Final Fantasy XV have to learn new survival skills and ways of life. They might have to use their combat skills in different ways, like Noctis using his weapons to fight off raiders instead of the usual monsters. This theme of adaptation also includes how the characters interact with new cultures and social structures.