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.
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.
There's a fanfiction titled 'Unexpected Affection'. In this one, the kiss between Natsu and Erza occurs during a moment of high drama. It's set during a dangerous battle where they both think they might not survive. This situation leads to a very passionate and unexpected kiss that changes their relationship dynamics in the story.
Yes, there are quite a few. You can find some on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Fairy Tail Natsu and Erza romance' and you'll get a bunch of results. Some might focus on how their relationship could develop in different scenarios, like during a particularly tough battle where they realize their feelings for each other.
I really like 'The Unlikely Alliance' which is a great Natsu Erza Mira fanfiction. It shows how they can put aside their differences and work together against a common threat. The author does a wonderful job of writing their interactions, especially the banter between Natsu and Erza.
One great fanfic could be 'The Adventure of Natsu and Erza'. It focuses on their unique bond during a dangerous mission. They rely on each other's strengths and in the process, their relationship deepens in a very platonic yet heartwarming way.
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.
The way it fits into the 'Fairy Tail' universe. If the fanfiction can incorporate the magic, the guild's dynamics, and the overall world - building of 'Fairy Tail' while still focusing on Natsu and Erza's relationship, it becomes really interesting. For example, a fanfiction where the kiss is a result of a magical bond or a quest that they undertake together within the Fairy Tail world.