Another plot twist could be related to his journey of self - discovery. As a guy reborn as Lucy, he has to come to terms with his new identity. He might struggle with the physical and emotional aspects of being a female in the Fairy Tail universe. This internal conflict could drive the story forward as he tries to find his place within the guild and the world at large, all while dealing with the challenges that come with being Lucy Heartfilia.
One possible plot twist could be that Lucy initially refuses Natsu's proposal because she fears it will change their dynamic in the guild. She might think that getting married will make them less focused on their adventures and more on domestic life.
Well, it would be an interesting concept. Lucy is a very popular character in Fairy Tail. If someone was reborn as her in a fanfiction, they might have to deal with her magic, her relationships with the other guild members like Natsu and Erza. They could potentially change the course of the story, for example, by using modern knowledge to solve problems in the Fairy Tail world more efficiently.
One possible plot twist could be that Zeref has an ulterior motive for joining. Maybe he wants to use the guild's resources to further his own dark plans.
Well, in some fanfictions, a plot twist could be that Future Lucy actually has a hidden power that she didn't know about until she traveled to the past. This power then becomes crucial in solving the problems in the past and also has implications for her own future. Also, there might be a plot twist where she discovers that the reason for her coming to the past was not what she initially thought. Maybe it was all part of a bigger plan by a character who has been manipulating events from the shadows all along.
One interesting plot twist could be that Lucy discovers a hidden power within herself that is linked to End. Maybe she can control a part of End's power and use it to save the Fairy Tail guild from a great danger. For example, she might be able to use it to stop an ancient evil that is more powerful than any they've faced before.
Well, if a guy is reborn as Lucy, his magic abilities would likely change significantly. Lucy uses celestial spirit magic, which involves summoning and making contracts with celestial spirits. As a new Lucy, he would have to learn how to handle this type of magic. He might initially struggle with the summoning process, as it requires a certain level of magical energy and incantations. But over time, he could potentially develop new ways to use the celestial spirits. Maybe he'd find ways to combine their powers in unique combinations that Lucy hadn't thought of before.
The power balance in the fanfiction world could be different. Without Lucy, Fairy Tail might lack some of the strategic and magical capabilities she would have brought. At the same time, Lucy could be a major force in another part of the fictional world, changing the political and magical landscape there. It also means that the relationships and story arcs that typically involve Lucy in the original Fairy Tail story will be completely different, creating a whole new set of stories and interactions.
A great plot twist could be that one of the Fairy Tail guys, like Loke, is actually a double agent working for an enemy guild. Lucy discovers this and has to decide whether to trust him again or turn him in. It would create a lot of internal conflict for her.
One possible plot twist could be that Zeref actually doesn't want to fight Natsu seriously and has some hidden agenda. Another could be that Natsu discovers a new power during the fight that is related to his past or his true identity.
One interesting plot twist could be that Fan has a different magical ability than Lucy. For example, Fan might have the power to control time, which would completely change the dynamics of the story. Instead of using Celestial Spirit Magic like Lucy, Fan could use this time - controlling magic to go back in time and prevent some of the disasters that happened in the Fairy Tail world, thus changing the relationships between the characters and the overall story arc.