Their relationship would likely become more intimate and deeper. With a baby on the way, they'd have to rely on each other more. Natsu would probably become more gentle and caring towards Mirajane, and Mirajane would feel more protected by Natsu.
Their relationship would evolve in many ways. Natsu would become more domesticated in a sense. He might start to do things like helping Mirajane around the house or getting things she needs. Mirajane would be more vulnerable around Natsu, showing her softer side more often. They'd also have a new shared goal of raising their child well. This would lead to them spending more time together, just talking about their baby, and planning for their future family. There would be more emotional moments between them, like when they feel the baby move for the first time, which would further cement their relationship.
Well, at first, it might be a bit of an adjustment. Natsu, who is used to being carefree and going on adventures, would now have to think about someone else besides himself and Mirajane. He'd start to see Mirajane in a new light, not just as a friend or a guildmate, but as the mother of his child. Mirajane, too, would see Natsu's growth and it would strengthen their bond. They'd have to communicate more about their fears and hopes for the future, which would bring them closer together.
The story would have to shift its focus. Instead of relying on Natsu's dragon - slayer magic and Mirajane's take - over magic, new characters or existing ones would need to shine. This could open up new plotlines such as the discovery of new magic among the remaining members or the forging of new alliances outside of the guild to compensate for the loss of Natsu and Mirajane. It would be a major turning point in the fanfiction's narrative.
In fanfiction, Natsu and Mirajane's relationship can be really interesting. Some fanfics might start with their initial interactions in the guild. Natsu is often shown as his energetic self, and Mirajane, with her kind yet mysterious side. Their relationship could develop gradually as they go on adventures together in the fan - created stories. Maybe Natsu helps Mirajane overcome some past traumas she has, like her issues related to her demon side. And in return, Mirajane could offer Natsu more emotional support than he's used to, since he usually just focuses on fighting and protecting the guild.
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.
Natsu and Lucy's relationship would transform in many ways. They would start to see each other in a new light. Natsu would see Lucy as the mother of his child, which would bring out a more nurturing side in him. He might start doing things like bringing her special foods or making sure she gets enough rest. Lucy would see Natsu as the father of her child, and trust him even more with their safety and future. Their relationship would no longer be just about their own adventures and feelings, but also about the future of their family. They would have to make decisions together that are in the best interest of their unborn child, and this would strengthen their bond in a whole new way.
In fanfiction, Mirajane and Natsu could have a very interesting mentor - mentee relationship. Mirajane, being more experienced, could teach Natsu some new magic techniques or how to better control his power. This would add a new dynamic to their interactions within the Fairy Tail guild.
Their relationship would likely become more protective. Gajeel would be constantly on guard to keep Levy and the unborn baby safe. He'd be more gentle and caring towards her.
One way is through their different personalities. Natsu is hot - headed and impulsive, while Mirajane is more composed and mysterious. This contrast can create a sense of entropy as their relationship develops. For instance, Natsu's sudden decisions might throw Mirajane off balance, and she has to adapt, which adds an element of chaos and change to their bond.
Their relationship would likely become more tender. Natsu would probably be more protective of Cana, always making sure she's safe and comfortable. Cana, on the other hand, might rely on Natsu more for emotional support.
They would become closer. The shared experience of expecting a child would bring them a new level of intimacy. Natsu would be more protective of Lisanna.
Well, if Natsu had the Sharingan in a fanfiction, it would likely enhance his combat abilities significantly. He could predict his opponents' moves more accurately, similar to how Sasuke uses it in Naruto. This would make him even more formidable in battles against strong foes in the Fairy Tail world. Maybe he could use it to analyze magic spells and find their weaknesses faster.