It could also show the complexity of their relationship. Maybe Erza's actions are out of her own insecurities or fears, and Natsu getting hurt is a consequence of her not being able to handle those emotions properly. This would mean that their relationship is not just about friendship or comradeship, but also about understanding each other's inner turmoil.
There's also a possibility that it causes a rift in the guild. Other members might take sides. Some might side with Erza, believing she had a good reason, while others might side with Natsu, feeling that Erza was too harsh. This could create a lot of tension within the Fairy Tail guild and further complicate the relationship between Erza and Natsu.
Well, in such a fanfiction, it could be a slow - burn kind of love. Natsu might be initially confused by his new - found feelings towards Erza. He could find himself constantly thinking about her, getting distracted during missions because of her. Erza, on the other hand, might be oblivious at first, being too focused on her duties. But as the story unfolds, she might start to see Natsu in a new light as well.
One possible reason could be a misunderstanding during a mission. Maybe Erza's actions were misinterpreted by Natsu, leading to him getting hurt, either physically or emotionally.
Some fanfictions depict their relationship evolving as they participate in guild - wide events. For instance, during a festival or a celebration in the guild, they might have a conversation that reveals new aspects of their personalities to each other. Over time, these small interactions build up, and they become closer friends, or in some cases, the relationship might take on a more romantic undertone as the fanfiction writer chooses to explore that aspect.
Natsu might be initially shocked and confused. He's not the type to expect rejection, so he could be at a loss for words at first. For instance, he might just stand there with his mouth open, not believing what he just heard.
Their relationship could start from mutual respect. They've been comrades for a long time. As the story progresses, Natsu might realize his deeper feelings for Erza during a particularly dangerous mission where he almost loses her. This realization could lead to him confessing his love, and from there, their relationship would develop into a romantic one and eventually marriage.
He may try to understand Erza's reasons. Natsu, despite his impulsive nature, has a big heart. He might respect Erza's decision and step back, trying to keep their friendship intact. However, he could also be a bit persistent in a non - annoying way. He might keep showing his care for her in a more friendly manner, hoping that over time, she might change her mind.
Their relationship would deepen in many ways. Natsu would be constantly worried about Erza's well - being. He'd be at her side all the time, which is a big change from his usually wandering nature. Erza would rely on Natsu more for emotional support. They'd start having more serious conversations about things like where to live, how to raise the child, and what kind of future they want for their family. This would bring them closer together and make their bond stronger than ever.
Their relationship could begin when Natsu saves Erza in a battle. Natsu, being the impulsive and brave character he is, jumps in front of a powerful attack aimed at Erza. Erza is both shocked and grateful. This event makes her see Natsu in a new light. After that, she starts to pay more attention to him, and Natsu, feeling proud of himself, tries to impress her even more.
In fanfiction, their relationship can be explored in different ways. They are both very powerful wizards in Fairy Tail. So, when they team up in a story, their combined strength can be used in creative ways against strong enemies. Also, there's the underlying friendship and respect they have for each other in the original series, and fanfiction can expand on that. It could be a story where Natsu is the only one who can reach Erza when she's in a dark place, or vice versa.