In the 'natsu is a dragon god fanfic', a possible plot is that Natsu has to learn how to control his dragon god abilities. He might struggle at first, accidentally causing chaos around him. And there could be a sub - plot where he has to go on a journey to find a special artifact or knowledge that will help him master his powers fully. Also, his love life could be affected. If he has feelings for someone, his new powers could either strengthen their relationship or create some misunderstandings.
In this fanfiction, a possible plot is that Natsu has to protect his friends from those who fear his new power as a dragon god. His friends initially might be a bit wary of him too. But as the story progresses, he shows them that he's still the same Natsu at heart. He uses his powers to save the guild from a great danger, like an invasion from a powerful dark force that only his dragon god powers can defeat.
Another plot might involve Natsu losing his dragon slaying powers temporarily. He then has to rely on his wits and the help of his friends in Fairy Tail. This could lead to some really heartwarming moments as his friends support him, and also some tense battles where they all have to fight together without Natsu's usual brute strength.
One interesting plot could be the brothers facing a powerful new enemy together. They might have to combine their unique ninja skills to defeat this foe.
One interesting plot could be Natsu facing a new, extremely powerful dragon that is immune to his regular attacks. This forces him to discover a new form or power within himself. Another plot might involve Natsu traveling to a different dimension where the rules of dragon slaying are completely different and he has to adapt quickly.
In this 'natsu turns into a dragon fanfic', a great plotline could be that Natsu's dragon form is different from the typical dragons. His friends, like Lucy, Gray, and Erza, try to find a way to reverse the transformation at first. But as they see the potential in his new form to fight a greater evil, they change their minds and instead help him master his dragon powers. This could involve a series of adventures where Natsu has to learn to fly, breathe different types of dragon fire, and communicate with other dragon - like creatures.
In addition to Natsu, Wendy could be a main character in the 'natsu is a dragon god fanfic'. Since she also has dragon - related powers, she could have a special connection with Natsu in this new situation. Maybe she helps him understand more about his dragon god powers. And Makarov, as the guild master of Fairy Tail, would also be a significant character. He would be concerned about how Natsu's new status affects the guild and the magical world as a whole.
One interesting plot could be the main character's struggle with their new dragon form. For example, they might have trouble controlling their newfound powers like breathing fire or flying. Another plot could involve the character trying to hide their dragon identity from their friends and family at first. Or perhaps there's a plot where the dragon - turned character has to face off against an ancient dragon - slaying order that is hunting them.
One idea could be that Natsu discovers unique magical abilities passed down from the Dragon God that set him apart from other mages. For example, he might be able to communicate with all types of dragons, not just the ones he's related to in the original story.
Well, in 'natsu is a dragon god slayer fanfic', themes like growth and evolution are very common. Natsu's character is growing not just in terms of power but also in his understanding of the world around him. Family is also a theme that pops up. Since dragons are like family to him in a way, his connection to them and how it affects his actions is explored. And of course, the theme of heroism. Natsu is seen as a hero, especially with his new powers as a dragon god slayer, and how he lives up to that role, facing challenges and saving the day, is a big part of these fanfics.
One possible plot could be that the kidnappers are from a rival guild who want to use Natsu as leverage against Fairy Tail. Gray could then embark on a solo mission to rescue Natsu, facing various traps and enemies along the way. He might have to use his ice - make magic in creative ways to overcome obstacles.