A third idea could be a crossover with a world full of ancient gods. The Dragon Slayers would find themselves in a situation where they are seen as either threats or potential allies by these powerful beings. They would have to navigate the complex politics of the godly realm while also trying to figure out how their dragon slayer powers relate to the divine magic present in this new world.
One idea could be to have the Dragon Slayers from Fairy Tail cross over into a different magical realm. They could encounter new types of magic and creatures that they have to learn to deal with. For example, a realm where magic is based on music and they have to figure out how to use their dragon slayer magic in that environment.
One idea could be to focus on the male OC's origin. Maybe he was found as an orphan by the ice dragon in a frozen tundra. The dragon raised him and taught him the ways of an ice dragon slayer. His journey could start with him leaving the dragon to explore the world, much like Natsu did in the original Fairy Tail story.
One idea could be an OC Dragon Slayer who has the power of a unique dragon, like a crystal dragon. This slayer could use the dragon's power to create crystal-based attacks. Another idea is an OC who was trained by a dragon in a hidden realm and then enters the Fairy Tail world with a different set of values compared to the regular dragon slayers. Maybe they have a more pacifist view at first but gradually learn to fight when necessary.
Well, you could create an OC dragon slayer who was initially from a different dimension. In this dimension, the rules of dragon slayer magic are a bit different. They come to the Fairy Tail world and have to adapt their magic while also facing the challenges there. Maybe they have a special form of dragon slayer roar that can freeze time for a short period, which would be a really cool and unique ability in the context of Fairy Tail battles.
Well, you could write about a new dragon slayer who has an elemental power that no one has seen before, like the power to manipulate light and shadow as a dragon slayer. This character could start as an outcast but then prove their worth in the Fairy Tail guild by using their unique powers to defeat powerful enemies. They could also have a special bond with a mysterious dragon that no one else is aware of.
A great story idea could be that the nine - tailed fox's power is somehow connected to a powerful and ancient magic in the Fairy Tail world. Maybe some dark wizard is trying to steal the fox's power. So, Fairy Tail wizards team up with Naruto and his friends to stop this. Also, imagine a story where the Fairy Tail guild members visit Konoha. They would be amazed by the ninja techniques and the different culture there.
Well, she could start off being an outcast in Fairy Tail because her ice powers seem so different from the rest. But then she proves her worth by using her ice dragon slayer magic to save the guild from a powerful water - based enemy. The ice would counter the water and she'd become a hero.
She could gain water dragon slayer powers after a magical accident. For instance, if she was caught in a magical explosion near a water - based artifact. Her powers could include being able to breathe underwater, which would open up new exploration opportunities for her and the guild. She could discover underwater ruins or hidden treasures.
Another possibility is that Lucy's Water Dragon Slayer powers are a result of a curse or a long - lost family heritage. As she delves deeper into understanding her powers, she uncovers secrets about her family's past. She might have to face off against an evil force that is also connected to her new powers. Along the way, she forms a special bond with the water element, seeing it as not just a tool for fighting but also a source of comfort and strength.
Another plot could revolve around the origin of Dragon Slayer magic. Maybe a long - lost scroll is found that reveals secrets about how the magic was first created and what its true purpose was. This could lead the Dragon Slayers on a quest to find out more about their powers and their connection to the dragons.
A common plot in Lightning Dragon Slayer fanfiction is the character facing a powerful enemy with lightning - related powers that are stronger than their own. This forces them to dig deeper and find new ways to use their slayer magic. For example, they might combine their lightning with other elements they've learned over time. Another plot could involve the slayer being transported to a different realm where the laws of magic are different and they have to adapt quickly. And sometimes, fanfictions explore the slayer's past and how they came to be a dragon slayer, like their relationship with their dragon mentor.