Well, if Natsu hurts Lucy in fanfiction, it could be a major turning point. For example, it might make Lucy question her place in Fairy Tail. She could start to doubt whether she really belongs with Natsu and the others. It also gives the author a chance to explore deeper emotions. Maybe Lucy feels betrayed and has to work through those feelings, which could lead to her character growth in unexpected ways.
Perhaps Natsu is under the influence of a powerful and dark magic that makes him lose control of himself and accidentally hurt Lucy. It could also be that Natsu is trying to protect Lucy from something but his actions end up causing her harm instead. Like if he tries to keep her away from a dangerous situation by pushing her too hard and she gets injured.
Their dance could bring them closer. It's a moment of physical closeness and shared activity. This might make them more aware of their feelings for each other, whether it's a deepening of friendship or the start of something more romantic.
In many fanfictions, Natsu protects Lucy by using his powerful fire magic against their enemies. For example, if they encounter a dark guild attacking Lucy, Natsu would jump in front of her and unleash a flurry of fire attacks like his 'Fire Dragon's Roar' to drive the enemies away.
In some fanfictions, Lucy might use her Celestial Spirit magic. For example, she could summon a powerful spirit like Leo to help fight off whatever is threatening Natsu. The spirit could provide a distraction or directly combat the enemy while Lucy tries to reach Natsu and get him to safety.
For Natsu, the pregnancy would likely make him more responsible. He's always been a bit of a hot - headed and impulsive character. But with a baby on the way, he would start to think more about the future and the consequences of his actions. For example, he might be more cautious in battles to ensure he can return to Lucy and their unborn child.
Perhaps in the fanfiction's plot, Natsu makes a big mistake that endangers Lucy or her friends. Let's say he recklessly takes on a powerful enemy without a proper plan, and Lucy's friends get hurt as a result. This might cause her to hate Natsu for his irresponsible behavior.
In fanfiction, Lucy might want Natsu because of their strong bond. They've been through many adventures together. Natsu is always there to protect her, and his brave and fun - loving nature attracts Lucy.
It would change the dynamic of the team. Usually, Lucy and Natsu are good friends and partners. If she hates him, their teamwork would be affected. They might not be able to fight enemies as effectively. For example, when facing a strong opponent that requires their combined magic, they might not be able to synchronize well.
Well, if Lucy is pregnant in a Fairy Tail fanfiction, it could add a whole new layer of drama. It might make the other characters more protective of her. For example, Natsu could become even more determined to keep her safe from any threats. This could also lead to changes in the guild's dynamic, as they would be looking out for not just Lucy but also her unborn child.
It might make some readers who were fans of her work sad. They would no longer have her unique perspective on the Fairy Tail universe to look forward to.