Female Natsu's personality could be shaped by her relationships with other guild members. She might be really close to some of the female mages and they influence her to be more girly in certain aspects, but still retain her Natsu - like bravado. Laxus could start to change his aloof attitude. When he's around Female Natsu, he could become more talkative and interested in the little things she does. Their personalities can develop as they face different magical creatures together. For example, when they encounter a powerful and mysterious beast, Female Natsu's fearless approach and Laxus' calm and calculated response can show how they complement each other and grow as characters.
To develop Female Natsu's personality, you could show her trying to fit into the Fairy Tail guild in her own way. She might be a bit more sensitive about how others perceive her as a female version of Natsu. Laxus could be developed by showing his softer side more. He might start to open up to Female Natsu about his dreams and fears. Their personalities could also develop through their arguments. For instance, when they disagree on a mission strategy, it can lead to a deeper understanding of each other's perspectives.
Their relationship could develop realistically through shared experiences. For instance, if they both have to protect a young mage from a common enemy. This shared responsibility would force them to communicate more, understand each other's strengths and weaknesses, and gradually form a bond.
In some fanfictions, Natsu might be developed as more of a strategist than in the original series. He could learn from Laxus' more calculating approach to battles. Laxus, on the other hand, might be shown to be more open - hearted, influenced by Natsu's warmth and loyalty to the guild.
I've read one where Natsu and Female Laxus compete in a guild - wide tournament. At first, it's all about winning for themselves. But as the tournament goes on, they start to understand that they are both representing Fairy Tail. They begin to work together in a way, like when they face an opponent who is using dirty tricks. They combine their powers to defeat the cheater and in the end, they both gain a new respect for each other and for the guild.
One frequent theme is rivalry. They are both strong characters in Fairy Tail. So, in many fanfictions, there is a friendly rivalry between them. They might compete to see who can complete a mission faster or who is stronger in a sparring match. Also, the theme of self - discovery can be seen. As they interact, they learn more about themselves, like Natsu learning to be more strategic from Female Laxus and Female Laxus learning to be more spontaneous from Natsu.
Natsu is hot - headed and impulsive, while Juvia is more emotional and reserved in a way. In a fanfiction, their first meeting could be full of misunderstandings because of these differences. Natsu might accidentally offend Juvia with his brashness, and Juvia might seem overly sensitive to Natsu. But as the story progresses, they start to learn from each other. Natsu could become more in - touch with his emotions, and Juvia could become more assertive.
Their relationship could be developed uniquely by having them start as rivals in a magical competition within the guild. As they compete, they learn about each other's strengths and weaknesses, and a mutual respect forms. This respect then turns into an unexpected friendship that eventually grows into love.
A possible plot could involve a magical tournament. Female Natsu enters to prove herself, and Laxus also participates. They end up as reluctant allies at first. As the tournament progresses, they start to see each other in a new light. Their interactions during the battles, the post - fight banter, and the times they have to train together can all be opportunities for their relationship to grow. Maybe there's a sub - plot where an old enemy of Laxus tries to use Female Natsu against him, which further complicates their relationship.
Their relationship could develop through shared battles. When they fight side by side against common enemies, they start to trust each other. For instance, in a fight against a group of dark mages, Natsu and the female demon realize that they complement each other's fighting styles. Natsu's brute force combined with the female demon's more strategic and stealthy attacks make them a powerful duo.
A great way to develop their story is through a journey. Maybe they get sent on a quest to find a rare magical item. Along the way, they would encounter various obstacles. Mirajane could use her wisdom and experience to get them out of some tight spots, while Natsu's determination and strength would keep them going. This shared experience would bring them closer together in the fanfiction world.
Their relationship can be developed through shared battles. For example, in a tough fight against a strong guild from another town, they rely on each other. Natsu protects Erza when she's in a vulnerable state during a requip, and Erza in turn uses her strategic mind to guide Natsu's brute force attacks. This mutual dependence can strengthen their bond.