Natsu would be heartbroken. Fairy Tail is like his family. He'd probably go on a solo journey to clear his name and prove his loyalty. Erza would be stoic but deeply hurt. She'd start an investigation within the guild, using her influence and intelligence to uncover the truth. She might also isolate herself a bit while she figures things out.
He might initially be shocked and confused. Natsu has always been so loyal to Fairy Tail, so this would be a huge blow to him.
Their friends would be overjoyed. Lucy would probably be the first to offer babysitting services. Gray might act all cool about it, but secretly be really excited for them. Happy, being Natsu's partner, would be super thrilled and would constantly be flying around the baby, making it laugh. Makarov would be like a proud grandfather, giving advice on how to raise the child in the Fairy Tail way.
One possible reason could be a misunderstanding within the guild. Maybe some false information was spread about them, leading others in Fairy Tail to turn against them. Another reason might be a power struggle. If Natsu and Erza were becoming too powerful, some jealous members could have conspired to make it seem like they were betraying the guild. Or perhaps an outside force manipulated the situation to drive a wedge between them and the rest of Fairy Tail.
One great aspect of Natsu and Erza fanfiction is the exploration of their unique friendship. In many stories, their different personalities - Natsu's brashness and Erza's strictness - create interesting dynamics. For example, there are fictions where they team up for a mission and Natsu's unorthodox methods initially clash with Erza's by - the - book approach, but eventually they learn to work together better, leading to a stronger bond between them.
The guild would be devastated. Natsu would probably be one of the first to be enraged. He'd vow to find whoever or whatever was responsible and make them pay. His fire would burn hotter than ever as he channels his anger.
The members of Fairy Tail would likely be shocked and angry. They would feel betrayed because Naruto had probably become a part of their family. Natsu, for instance, would be enraged and might immediately challenge Naruto to a fight. He's hot - tempered and wouldn't take kindly to someone he considered a friend turning against the guild.
In fanfiction, a child of Natsu and Erza might inherit Natsu's fiery temper and love for adventure. They could also have Erza's strong sense of justice and discipline. Maybe they'd have Natsu's pink hair and Erza's beautiful eyes. And they'd probably be a powerful mage, combining Natsu's dragon slayer magic with Erza's requip magic.
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.
One plot could be that Natsu becomes overly protective of Erza. He starts to take on extra jobs to save up for the baby. Meanwhile, the guild members also rally around them. Gray might tease Natsu about being a soon - to - be - dad, and Lucy could offer to help Erza with baby - related preparations like knitting baby clothes.
Gray would be shocked at first. He and Natsu have a long - standing rivalry - but also a deep friendship. He might initially be angry that Natsu would just leave like that, but then he would realize how much he'll miss him. He might also feel a sense of loss for the guild as a whole, since Natsu is such an important part of it.