One idea could be that Lucy discovers she has hidden witch powers passed down through her family. Maybe she can use these powers to save the Fairy Tail guild from a new, powerful dark magic threat. Another plot could involve Lucy being transported to a parallel world where she is a well - known and feared witch, and she has to find her way back while also learning about her new - found powers in that world.
A cool plot might be that Lucy starts having strange dreams about being a witch. As she investigates, she finds an old spell book. When she opens it, it releases a spirit that only witches can see. This spirit then guides her on a journey to become a full - fledged witch, all while still being part of the Fairy Tail. Along the way, she has to balance her new magical training with her guild duties and friendships.
Perhaps there is a prophecy in the world of Fairy Tail that a witch will be the key to stopping an ancient evil. Lucy is unknowingly the witch in the prophecy. She starts to notice strange things happening around her, like magic reacting differently to her. As she delves deeper into her witch side, she must face challenges from within the guild who are suspicious of her new powers, as well as the external threat of the ancient evil.
A plot could involve Freed accidentally casting a spell that links his and Lucy's minds. At first, it's a chaotic mess as they have to deal with suddenly sharing thoughts and feelings. But as time goes on, they start to understand each other on a deeper level. They use this newfound connection to uncover a plot within the Fairy Tail guild by a group of mages who are trying to undermine the guild's leadership, and in the process, their relationship blossoms.
One plot idea could be that Lucy discovers a cat with magical powers that is related to an ancient Fairy Tail legend. The cat could lead her on a quest to find a hidden treasure that was lost long ago in the world of Fairy Tail.
One plot idea could be that Hibiki and Lucy are on a joint mission. They discover an ancient magic artifact that has the power to either save or destroy the world. Along the way, they face various challenges and their friendship grows as they rely on each other's unique magical abilities to overcome obstacles.
One plot idea could be that Lucy and Lisanna team up for a special S - class mission. They face a powerful dark wizard who has the ability to control time. Along the way, they discover new magic spells and also learn more about each other's pasts. This would create a lot of action and character development.
One plot idea could be that Loke has to protect Lucy from a powerful dark magic user who is specifically targeting her celestial magic. Another could be a story where Lucy discovers a new and rare celestial key, and Loke helps her figure out how to use it. Maybe a plot where they get trapped in a magical realm and have to rely on each other to get out.
One idea could be that Aquarius gets trapped in a different dimension, and Lucy has to go on a dangerous quest to rescue her. She might have to team up with some unexpected allies from Fairy Tail. Another plot could involve Aquarius losing her memory, and Lucy has to help her regain it while also protecting her from those who would take advantage of her in this vulnerable state.
One idea could be that Lucy and Rogue are brought together by a powerful magic artifact. They have to team up to protect it from an evil force that wants to use it for destruction. Along the way, they start to understand each other's pasts and form a deep bond.
One idea could be a story where Lucy and Erza have to team up to save the Fairy Tail guild from a powerful dark magic that's slowly corrupting it. They'd face many challenges and have to rely on each other's unique magic abilities. Another could be a time - travel plot where they go back in time and meet the founders of Fairy Tail and learn some long - lost magic techniques. Maybe they also have to change a certain event in the past to save the future of the guild.
A possible plot idea is that Zeref is cursed, and Lucy, with her kind heart, tries to find a way to break the curse. Along the way, they face many challenges together, and their relationship evolves from distrust to mutual understanding and perhaps even love. They might also encounter other Fairy Tail characters who are initially against their association due to Zeref's reputation.
Maybe a plot where Lucy and Yukino accidentally switch magical powers. This leads to a series of comical and also dangerous situations. They have to figure out how to reverse it while also dealing with enemies who want to take advantage of their confusion.