One common theme is friendship. Their relationship as friends is often explored, like how they trust and rely on each other. Another theme is adventure. They usually go on some kind of adventure together, whether it's to defeat a new enemy or to discover something new. For example, in many fanfictions, they set out to find a lost magical item.
Love is a very common theme. Writers often develop a romantic relationship between Natsu and Lucy. It might start as a slow - burn kind of love, with them gradually realizing their feelings for each other. Also, the theme of growth is there. They both grow as characters, Natsu might become more in - touch with his emotions and Lucy could become stronger in her magic abilities through their experiences together in the fanfictions.
Another theme could be friendship. In the context of being a dragon slayer, Lucy's relationships with her friends, whether they are also slayers or just her regular comrades, are likely to be explored. Her friends might support her in her new role, or there could be some conflicts related to her new power. Usually, how these relationships evolve is an important part of the fanfiction.
One common theme is adventure. Since they are from the Fairy Tail guild which is all about going on quests, many fanfictions continue this trend. They go on new adventures together, facing powerful enemies and discovering new magic.
In these fanfictions, a major theme is the combination of different magics. Lucy has her celestial spirit magic and now as a dragon slayer, how these two magics interact and complement each other. Another theme is the search for identity. She is no longer just Lucy the celestial wizard but also a dragon slayer, and she has to figure out what that means for her place in the world and among her friends.
Power and responsibility is a common theme. As Natsu becomes a dragon god slayer, he has more power, but also more duties. Another theme is friendship. His friends in Fairy Tail still support him even as he changes. And there's often the theme of self - improvement, as Natsu has to master his new abilities.
One common theme could be redemption. Natsu, being an outlaw, might be on a journey to redeem himself for past misdeeds. Another could be power struggles, as he is a dragon slayer and there might be others vying for power or trying to control him. Also, friendship might be a theme, as he could be making new allies even in his outlaw status.
In 'natsu x oc dragon slayer fanfiction', a frequently seen theme is the struggle against dark forces. Natsu and the OC team up to fight various villains and protect the world. Another common theme is family. In the Fairy Tail universe, family is important, and the OC may find a new family in the guild, especially with Natsu as a close friend or more. Additionally, the theme of growth, both emotional and in terms of magical power, is a staple in these fanfictions.
One common theme is probably adventure. Lucy and the fire dragon slayer could go on quests together. Another might be friendship, as they develop a bond. And of course, there could be a touch of romance in some of the fanfics.
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 common theme could be self - discovery. Lucy might discover new powers within herself as an Elemental Dragon Slayer, leading to a journey of understanding her true potential. Another theme could be friendship. She may form strong bonds with other characters while on her dragon - slaying adventures. Also, the theme of facing one's fears is likely. Confronting powerful dragons would surely test her courage and force her to overcome her fears.
A lot of these fanfictions also deal with the idea of power and how they combine their dragon slayer powers. It could be them facing a powerful enemy and using their combined might to defeat it. There are also themes related to their pasts as dragon slayers, like how they overcame the loss of their dragons and how that affects their relationship.