There might be a fanfiction that focuses on how the powers of Kurama and Kyuubi could be incorporated into the Fairy Tail magic system. For example, a mage in Fairy Tail discovers a way to use their chakra like abilities. As for Nuarto, it could be a backdrop for a new kind of magical beast in the story. It really depends on the creativity of the writer.
Well, you could start by having a character from Fairy Tail accidentally stumble into the world where Kurama and Kyuubi exist. Then, they discover a connection to the Nuarto world through some ancient magic or prophecy. And from there, the story can unfold as they try to find their way back home while also dealing with the powers and politics of these different worlds.
Perhaps in the fanfiction, Aquarius Nuarto is sent on a special mission by the Fairy Tail guild. This mission could be to retrieve a magical artifact that has been lost underwater. Along the way, she meets new characters, some of whom become her allies and others her enemies. She uses her water - based magic skills and her wits to complete the mission.
One interesting story could be about a Kyuubi character in the Fairy Tail world having unique magical abilities that help the guild in a major battle. For example, it might use its nine - tailed powers to create powerful shields or offensive spells against a dark guild.
One possible fanfiction could be about Erza Scarlet getting a special tattoo by Nuarto that gives her some unique power in the Fairy Tail universe. Maybe it's a tattoo that has a connection to her past or unlocks a hidden magic ability.
There are quite a few interesting Naruto, Kyuubi and Fairy Tail fanfictions out there. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. Some fanfictions might focus on crossovers, where characters from Naruto and Fairy Tail interact in unique ways, and the Kyuubi could play a crucial role in the story, perhaps as a source of power or a mystery to be solved.
The significance could be related to her heritage. Perhaps Erza discovers that she has a long - lost family connection, and the tattoo by Nuarto is a traditional mark of that family. It could then be a source of new spells or abilities that are specific to her family's magic, which she can use to help Fairy Tail in their adventures.
Her character could develop by becoming more confident. If she faces and overcomes difficult situations, like battles against stronger opponents, she would gain self - assurance. For example, if she manages to defeat a powerful dark mage using her water magic, she would believe more in her abilities.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created stories, and you can use the search function to look specifically for Kyuubi and Fairy Tail fanfiction. Just type in the relevant keywords, and you should be able to find a variety of works.
In the fanfiction, Kyuubi could start off as a very self - centered character, only interested in its own power and freedom. But through interactions with Kurama and facing common challenges, it starts to develop a sense of responsibility towards others. Kurama, on the other hand, is initially very reserved. However, as it spends more time with Kyuubi, it begins to open up more and show a more emotional side, like getting angry more easily when Kyuubi makes a particularly dangerous or stupid move.
First, get to know the universes well. Understand the power systems in Naruto like chakra and the nature of the Kyuubi. Also, study the magic types and guilds in Fairy Tail. Then, think of an interesting premise for the crossover. It could be a quest that involves both Naruto and Fairy Tail characters. Keep the characters' personalities true to their original versions.