Natsu's character could develop a greater sense of responsibility. Going back in time, he realizes the importance of his actions on a whole new level. He might become more cautious in his decisions, as he knows the consequences they can have in the future.
His character may also develop in terms of his relationships. He has a chance to redo his interactions with his friends. This could make him more empathetic and understanding. For instance, if he had a fight with a friend in the original timeline, he could go back and handle it better, which would in turn shape his character to be more harmonious in relationships. Also, he could learn from the past versions of his friends and grow as a person. He might pick up on some of their good qualities that he overlooked before, which would add more depth to his character.
Natsu's character development in this fanfiction might involve him becoming more responsible. With his end form, he has greater power and with that comes the need to use it wisely. He could start to think more about the consequences of his actions. For example, he might not rush into battles as blindly as he used to. Also, his emotional growth could be a part of it. He could become more in tune with his feelings towards his friends, especially Lucy. His loyalty to the guild could also deepen as he realizes his new form can be a great asset to protect Fairy Tail.
Often, Natsu becomes more confident. With the Dragon Force, he realizes his greater potential, which boosts his self - assurance.
Well, in this kind of fanfiction, Natsu might use his knowledge of the future to prevent some tragedies. For example, he could stop certain battles from happening or save characters who died in the original timeline. Maybe he would also try to change the power dynamics within the guild earlier on, making Fairy Tail even stronger from the start.
In fanfiction, if Natsu turns into a dragon, his character development would be a journey. He would have to face his own self - doubts. As a dragon, he has more power, but with that comes responsibility. He would need to learn how to control his dragon instincts, like aggression and territoriality. This process would shape him into a more mature character. His relationships would also change. Some characters might look up to him more, while others might question his humanity. Through all these experiences, Natsu would grow and become a different kind of hero in the Fairy Tail world.
Emotionally, Natsu could become more empathetic. If he meets characters in the dark guild who had a difficult past that led them to the dark side, he might start to see things from their perspective. This doesn't mean he would support their actions, but he would understand them better. For example, if there's a character in the dark guild who was orphaned and turned to dark magic for survival, Natsu might feel sympathy for them and try to offer an alternative path rather than just attacking them. This would show a more mature and compassionate side of his character that wasn't as prominent before.
In this fanfiction, the story might take a darker turn. Natsu is like the heart and soul of Fairy Tail in many ways. Without him, there could be a sense of gloom in the guild. However, this could also be a catalyst for change. Characters like Wendy could step up more. She might start to explore and master her dragon slayer magic in ways she hadn't before. And the relationships between the characters would shift, perhaps becoming more complex as they deal with the absence of Natsu.
His character could become more humble. Going back in time and seeing the past versions of people and events might make him realize how much he has changed over the years. He may also become more cautious. Knowing the consequences of certain actions from his original timeline, he'll be more careful with his decisions in the past. For example, he might think twice before revealing his identity as Iron Man too soon.
Well, in many fanfictions, their relationship might start with Natsu being a bit in awe of Mavis as she is a very important figure in Fairy Tail's history. Natsu, being his brash self, might initially make mistakes around her but gradually learns from her wisdom. As time goes on, he could come to respect her even more deeply and they might form a bond where Mavis becomes like a guiding light for Natsu in his adventures and growth within the Fairy Tail guild.
If Natsu is a girl in this fanfiction, her character might change in terms of her relationships. For instance, she may be more self - conscious about her appearance compared to when she was male. Also, her interactions with male characters like Gray could shift. Instead of their typical rival - like banter, there could be a more complex emotional undertone, like a friendly - rivalry with a hint of romantic tension perhaps.
Noctis' character could develop a greater sense of responsibility. Since he has seen the consequences of his actions in the future, he would be more cautious and calculated in his decisions when he goes back in time. He might also become more self - reliant as he realizes he can't always rely on the same people or circumstances. For example, if he lost someone important in the future due to his actions, he would be more independent in his choices to prevent that loss again.