A story where Ren and Sherry accidentally end up in a parallel dimension where the rules of magic are different. They have to figure out how to get back to their own world. In this dimension, they meet strange versions of their friends from Fairy Tail. They learn new magic techniques while trying to find a way home and also have to deal with a powerful being that rules this parallel dimension and doesn't want them to leave.
Maybe a plot where Ren gets cursed and Sherry has to find a way to break it. She could search through different magic libraries and consult with other mages in Fairy Tail. During this time, Ren is struggling with the effects of the curse, which could be something like slowly losing his magic power. Their friendship deepens as Sherry is determined to save him, and in the end, she discovers a rare spell that breaks the curse.
One possible plot could be that Sherry and Ren team up for a difficult mission in the Fairy Tail world. They might face a powerful dark wizard who has the ability to manipulate time. Sherry's magic could be crucial in deciphering the wizard's spells, while Ren uses his combat skills to protect Sherry during the battles. Along the way, they start to understand each other's pasts and form a deep bond.
Sherry could be developed by exploring her insecurities about her magic. Maybe she has always felt that her magic was not as powerful as others in Fairy Tail. Ren could help her gain confidence by believing in her. For Ren, his character could be developed through his backstory. He might have a past that makes him hesitant to get close to others, but Sherry's kindness breaks through his barriers.
In some fanfictions, Lyon and Sherry might have a story where they are training together to improve their magical abilities. Sherry could be having trouble with a particular spell, and Lyon helps her master it, leading to a stronger bond between them. They then use their combined skills to defend the guild from an outside threat.
Natsu could be a great addition. His brash and powerful nature could contrast with Ren and Sherry's more calculated and magical - knowledge - based approaches. He could join them on a mission and provide the muscle when they encounter tough opponents. Also, Lucy would be good as she has a wide range of celestial spirits that could be useful in different situations. Her kind and curious personality would also add an interesting dynamic to the group.
One idea could be a new character arriving at Fairy Hills and having to adapt to the unique living situation. They could face challenges like getting along with the different personalities of the Fairy Tail mages living there.
Another plot could involve Bardock having to adapt to the magic - based society of Fairy Tail. He might initially struggle with understanding how magic works, but then discovers a way to combine his Saiyan power with the magic there. For example, he could learn to use ki - based attacks in harmony with Fairy Tail's elemental magics. This would create a unique fighting style that surprises both his allies and enemies.
One idea could be a crossover adventure where characters from Fairy Tail and Negima team up to fight a common, powerful enemy. For example, they might face a dark wizard who has the ability to steal magic from both worlds.
One idea could be that the main couple from Fairy Tail goes on a honeymoon to a magical island. There, they discover a hidden ancient magic that they have to protect from villains who also find out about it. Another plot could involve them facing relationship challenges during the honeymoon, like misunderstandings due to magic gone wrong. For example, a spell makes one of them forget parts of their relationship, and they have to work through it to rekindle their love.
In a 'Fairy Tail WW2 Fanfiction', a possible plot could be that the guild discovers a hidden magical dimension that is somehow connected to the events of WW2. They enter this dimension to try and stop a dark force that is influencing the war from the shadows. Some of the characters could form alliances with real - life military personnel who are open - minded enough to accept their help. This would lead to interesting interactions between the magical and non - magical worlds during the war.
One idea could be exploring how the next generation of Fairy Tail wizards handle a new dark guild threat. They might have to combine the old and new magic techniques they've learned.