Minerva could be developed by showing her more vulnerable side. In the original series, she is often seen as strong and intimidating. But in fanfiction, she could open up to Natsu about her fears and insecurities. For example, her fear of not being good enough despite her power. This would make her more relatable and humanize her character.
For Rogue, his relationship with his shadow could be explored more deeply. Maybe in fanfiction, he discovers new powers related to his shadow because of Minerva. For example, Minerva's magic could interact with his shadow in an unexpected way, forcing him to learn to control this new aspect of his power.
For Natsu, his character could be developed by showing his more protective side towards Yukino. He could learn to be more patient and less impulsive when she's around, as Yukino might be more delicate in some situations compared to his usual rough - and - tumble Fairy Tail friends.
The characters in this fanfiction would develop in various ways. Natsu, as the alpha, might start off as a bit of a hothead but gradually learn to be more responsible. His friends would also grow. For example, Happy could become more independent and helpful. The other Fairy Tail characters in high school would adapt to the new environment. Gray might become more competitive in academics while still maintaining his rivalry with Natsu.
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.
One plot idea could be that Natsu and Minerva are forced to team up on a dangerous mission. They start off not getting along due to their different personalities and past rivalries. But as they face various challenges together, they gradually learn to respect each other and develop a friendship. Maybe they have to battle a powerful dark wizard who has a connection to both of their pasts.
Another way is by exploring their pasts. Maybe there was a misunderstanding that led to their initial animosity. By delving into their backstories, they can come to terms with what really happened and start to build a more positive relationship. They could have a heart - to - heart conversation where they realize they have more in common than they thought.
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.
Their relationships can be developed through shared experiences. For instance, if they go on a dangerous quest together, they'll have to trust and rely on each other. This can deepen their friendship. Natsu might start to respect Gray's ice - magic more when he sees how it can complement his own fire - magic in battle. Lucy could become closer to both of them as she uses her celestial spirits to assist them in tight situations.
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.
In fanfiction, Natsu's age can vary greatly. Some authors might keep him at his canonical age from the original Fairy Tail series, which is around 17 - 18 years old at the start. However, in alternate universe fanfictions, he could be older or younger depending on the plot. For example, in a time - travel based fanfic, he could be much older if the story takes place far into the future or much younger if it goes back to his childhood days.