A story could be about Link's past encounters with the Great Fairy affecting his present. For example, a memory from when he was a child and first met the Great Fairy resurfaces during a difficult battle. This memory gives him the strength and inspiration he needs to overcome his enemy.
A plot could be that the Great Fairy Lemon has lost her memory due to a magical accident. Link discovers her in this state and decides to help her regain her memories. As they journey together, they face enemies that are after the weakened Great Fairy. Link must fight them off while also trying to find the key to restoring her memory, which could be hidden in an ancient, forgotten temple.
Their relationship could develop through mutual respect. Link respects the Great Fairy Lemon's power and wisdom, and she respects his courage and determination. For example, every time Link visits her for a power - up, they have a brief conversation that gradually deepens over time. They start to share stories about their experiences in Hyrule, which brings them closer.
One interesting idea could be exploring how Link and Zelda adjust to parenthood. Maybe they have to protect their baby from new threats in Hyrule. Another could be the baby having some sort of special power that is both a blessing and a danger.
One thing that might make it unique is the unusual pairing. Link is a well - known hero in the Zelda series, and the Great Fairy is a more mystical and different kind of character. The combination of their personalities and the potential for new storylines makes it stand out.
One idea could be that OoC Link accidentally travels to the world of Wind Waker Link. They could initially be confused by each other's appearance and way of life. For example, OoC Link might be shocked by the vast ocean in Wind Waker's world as his own world could be more land - based. Then they could start to learn from each other, like OoC Link teaching Wind Waker Link some combat techniques from his world, and Wind Waker Link showing OoC Link how to sail and navigate the ocean.
You could do a time - travel fanfiction. Have a character go back in time to when the Fairy Tail guild was first founded and see how they interact with the founders. Or, write a story where the characters swap powers. So, Erza would have Lucy's celestial magic and Lucy would have to use Erza's requip magic. This would lead to a lot of comical and also challenging situations for them. Also, you could write a fanfic about the guild taking on a mission in a completely new and strange land, filled with magic they've never seen before.
One idea could be that Naruto discovers a hidden fairy realm in the forest. There, fairies have unique chakra powers that Naruto must learn to master in order to defeat a new enemy threatening the Hidden Leaf. Another idea is that Naruto is part - fairy himself, and his fairy abilities start to emerge during a crucial battle, giving him an edge.
You could write a fanfiction where the fairies have more agency. Instead of just being attached to the fencers, they could have their own goals and motives that sometimes conflict with the fencers'. This would add a layer of complexity to the relationships in the story. Also, a time - travel themed fanfiction could be interesting, like a fencer going back in time to change a crucial event in the Fairy Fencer history.
One idea could be exploring an alternate universe where the main characters have different magic abilities. For example, Natsu could have ice - based magic instead of fire. Another idea is to focus on the backstories of the minor characters in more depth, like how they came to join Fairy Tail. A third idea would be to create a time - travel fanfiction where characters go back in time to change a significant event in the Fairy Tail world.
One idea could be exploring an alternate universe where the main characters have different magic powers. For example, Natsu could have ice - based magic instead of fire. Another idea is to focus on a backstory for a minor character, like how they came to join the guild. Maybe a story about a character's journey to find a long - lost magical artifact that has a connection to Fairy Tail's history.