One possibility is that Naruto leaving Fairy Tail could lead to a rift between him and Erza at first. However, as time passes, they might realize that their friendship is stronger than the guild. Naruto could bring his ninja ideology to other parts of the world, influencing the way people think about power and teamwork. He might also find himself in situations where he has to use his wits more than his strength, as he won't have the support of Fairy Tail. This could be a turning point for his character development, making him more self - reliant.
Erza might be shocked. After all, Naruto is an important part of her life in the fanfiction. She could initially try to convince him to stay, using her own experiences in Fairy Tail to persuade him.
Well, if Naruto is badly injured in a Fairy Tail fanfiction, perhaps the Fairy Tail mages would try to heal him using their magic. They have various types of healing magic like Wendy's Sky Dragon Slayer magic which could be used to mend Naruto's wounds.
In the Fairy Tail world, Naruto would bring his unique ninja abilities. For example, his shadow clone jutsu could be used in creative ways during battles or to perform tasks. He would likely befriend Natsu because they both have a passion for fighting and protecting their friends. Naruto could also introduce new combat styles to the Fairy Tail guild, which might change the way they approach battles.
Perhaps Naruto is on a quest to find a way back to his own world. He realizes that staying in Fairy Tail is only delaying his journey. He has a sense of loyalty to his own friends back home like Sasuke and Sakura. So he leaves Fairy Tail, even though he has made some friends there, in order to pursue his ultimate goal of returning to Konoha.
Maybe they could be rivals at first. Erza is highly competitive, and Naruto is always looking to prove himself. Their initial rivalry could turn into respect as they see each other's skills in combat. For example, Naruto might be impressed by Erza's ability to change armors and use different types of magic, while Erza could admire Naruto's never - give - up attitude and his powerful jutsu.
One possible plot could be that Natsu and Erza leave Fairy Tail due to some kind of internal conflict within the guild. Maybe there are differences in opinions regarding how the guild should be run or what kind of jobs they should take. So they decide to set out on their own journey to find a new purpose.
One possible scenario is that Naruto starts to learn new and unique jutsus from Itachi. Itachi is highly skilled, and he could pass on some of his knowledge about the Sharingan and powerful genjutsu. Naruto, with his determination and Itachi's guidance, might become even stronger, and they could form a plan to deal with the threats to Konoha that they both know exist.
Another scenario is that Naruto leaves because he feels like an outcast with the Rinnegan. The villagers might fear his new power, and he decides to leave to find a place where he can fully understand and control the Rinnegan without causing panic. He could then encounter other powerful ninjas or groups who either want to use him for his power or help him master it.
Perhaps Konan and Naruto would go on a journey together. They could explore new places, and Konan would get to experience the world outside of Akatsuki's influence. Naruto would introduce her to his friends and the way of life in Konoha. Konan might also start to learn some of the Konoha ninja techniques and incorporate them with her own. Their relationship could grow stronger as they face various challenges together, like dealing with rogue ninja or helping villages in need.
Well, one possibility is that Hinata decides to go after Naruto. She's in love with him, after all. She might leave Konoha too, in search of him. This could lead to a whole adventure where they meet new characters and face new challenges together. It would also be a chance for their relationship to develop further outside the constraints of the village.