The development could start with Naruto being transported to the Fairy Tail universe. Since he's immortal, he might initially be seen as a strange and powerful being. As the story progresses, he could form alliances with Fairy Tail members. His immortality might make him a target for some villains who want to study or use his power for evil, and this could drive the plot forward with lots of action and drama.
Well, in such a fanfiction, the storyline might develop with Naruto's immortality bringing new challenges to the Fairy Tail world. Maybe he has to deal with dark guilds in a different way because he can't be killed easily. His ninja skills could also blend with the magic in Fairy Tail, creating unique combat styles.
First of all, Naruto's immortality would change the power dynamics in Fairy Tail. He could be a mentor figure to some of the younger wizards, teaching them about perseverance like he learned in his own world. The story might also involve Naruto exploring the different types of magic in Fairy Tail. His immortality could lead to him taking risks that normal characters wouldn't, which could result in him uncovering secrets about the world or the magic itself, and this would be the key to the continuous development of the storyline.
Chapter 288, "The Old Master Already Knows", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li and Zhao Lang were lifted onto stretchers and taken to...
Chapter 340, "Seclusion, the Growing Yu Generation, Family Banquet, Rapid Development (Part 4)", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. The setup is Xia Hong made up his mind and withdrew his gaze, looking through the..., but the pressure keeps building through This year, he had hardly left the Star-picking Hall, usually only....
Chapter 215, "Overthinking is a Disease, It Needs Treatment!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Jiang Li let out a light sigh and tried to adjust her posture.
Chapter 308, "Want me to surrender to him? Don't even think about it!", is the clearest early answer because it turns Don's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li sighed, "Where is your mind wandering?
Chapter 261, "They've Ruined the Entertainment Industry!", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event.
Chapter 274, "Post-Traumatic Stress Syndrome", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Upon hearing this, Officer Xu became even more excited, but catching...
Chapter 56, "Popular Host L God Actually Supports Jiang Li?!", is the clearest early answer because it turns Jiang Banxian's situation into a concrete plot event. It opens with Lei Shen originally had no idea about the trending topics on Weibo.
Chapter 291, "To Hell with Sister Complex!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
Chapter 19, "I dare you to touch her!", is the clearest early answer because it turns Mr's situation into a concrete plot event. It opens with What criminal law is this or that, this was originally none of your... and closes on Please give me Miss Su's birthdate." Mr..
Chapter 53, "Save People!", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event. It opens with Night had fallen over Chixia Village, eerily void of any human sounds. and closes on Wait, did this kid accidentally fall into the water?] [Help, this....