A prevalent theme is the battle against evil versions of his friends or himself. In a nightmare fanfic, the author might create a scenario where Natsu has to fight an evil Natsu or his friends who have been corrupted. This theme adds a lot of drama and action. It also tests Natsu's loyalty and his ability to see the good in his friends even when they seem to be his enemies.
One common theme might be a 'what - if' scenario where Natsu and Wendy have a closer relationship than in the original series. But since 'lemon' implies mature content, it's not really in line with the general Fairy Tail spirit. The original series is more about magic, friendship, and guild loyalty.
One popular theme is the change in relationships. Since Natsu is gender - bended, the dynamics with other characters like Lucy can be really interesting. For example, a more sister - like bond might develop instead of the typical male - female friendship. Another theme could be the exploration of Natsu's new - found femininity. How she deals with her emotions and powers in a different way than the male Natsu. Also, there could be themes related to how the other guild members react to this new Natsu. Do they treat her differently? Do they still see her as the same strong fighter? These are all aspects that are often explored in such fanfictions.
One popular theme could be their friendship evolving into a deeper emotional bond. In these fanfictions, their mutual respect and the times they've fought side by side in the original Fairy Tail story can be the basis for a more profound connection. Another theme might be how they support each other through difficult times, like when Natsu lost Igneel or when Gray was dealing with his past traumas.
One popular theme is the exploration of Natsu's new role as a pregnant character. It often delves into how his relationships change, like with his friends in Fairy Tail. Another theme could be the challenges he faces during the pregnancy, such as dealing with his own insecurities or the reactions of others. Also, some fanfictions might focus on the magical aspects related to the pregnancy, perhaps how his dragon slayer magic is affected or how he discovers new magical abilities because of it.
One popular theme is their rivalry. They are always competing with each other in the series, and in fanfiction, this can be explored more deeply, like who can complete a mission faster or who is stronger in a new magic ability.
One popular theme could be adventure. Since 'Fairy Tail' is an adventure - filled series, fanfictions might continue that trend with Natsu and Erza going on new quests together. Another theme could be friendship development. Despite the 'lemon' aspect which might imply a romantic or more adult - like relationship, many fanfictions also focus on how their friendship grows deeper. Also, the theme of self - discovery can be present as they face various challenges and learn more about themselves.
Some popular themes include their rivalry as well. They might compete to see who can defeat a certain enemy first or who can master a new spell faster. This adds an interesting dynamic to their relationship. And there are also fanfictions that focus on them being part of a team within the Fairy Tail guild, working together with other members to achieve a common goal, like saving the guild from a major threat.
Well, a common theme is the idea of protecting each other. In Fairy Tail, Gray and Natsu already have a bond of comradeship. In yaoi fanfiction, this can be intensified into a romantic bond where they are extremely protective. Also, the theme of self - discovery through their relationship is there. They might discover new sides of themselves as they get involved with each other, for example, Natsu might become more patient and Gray more open - hearted.
Some common themes are redemption and forgiveness. Given Zeref's actions in the original Fairy Tail series, fanfictions might delve into whether Natsu could be the one to bring about Zeref's redemption. Family also plays a role. With their shared history, fan stories could explore the idea of them being part of an unexpected family or having a brotherly bond in a different way than what's shown in the official story.
One possible plot could be that Natsu's nightmare is related to losing his friends. In the nightmare, he might see Fairy Tail being destroyed and his friends being hurt or disappearing. This could lead to him waking up in a panic and then being extra protective of his guildmates in the real world.