Well, a big theme is the exploration of different dimensions. In these fanfictions, the two Natsus usually encounter strange and unique environments in other dimensions. Also, the theme of friendship or brotherhood is often present. They start to understand and care for each other more as they face challenges together in the foreign dimensions.
In 'natsu meets natsu dimension travel fanfiction', the theme of power evolution is quite common. The two Natsus might combine their powers or learn new ways to use their magic from each other. And there's also the theme of destiny. They may realize that their meeting across dimensions was somehow fated and that they have a greater purpose together in the grand scheme of things.
One common theme is self - discovery. When Natsu meets another version of himself, he often learns new things about his own capabilities and personality. Another theme is cooperation. Since they are essentially the same person, they have to learn to work together despite their initial differences.
There's a great piece of 'natsu meets natsu dimension travel fanfiction' where Natsu travels to a parallel dimension and meets another version of himself. This other Natsu has different magical powers. They end up teaching each other new spells and techniques while trying to find a way to close the rift between their dimensions. It's really exciting to read how they interact and grow together.
A frequently seen theme in Natsu and reader fanfiction is the power dynamic. Natsu is a powerful mage, and depending on how the writer portrays the reader, there can be an interesting exploration of how their powers or lack thereof interact. Also, the theme of loyalty is quite common. Natsu is loyal to his friends, and this loyalty can extend to the reader in these stories, creating heartwarming moments.
One common theme is the anticipation and excitement within the story's community about the new life. Another could be the challenges Natsu faces during the pregnancy, like dealing with her own powers or how her daily life is affected.
One common theme is power. Since Natsu is a dragon, the fanfictions often explore the extent of his power and how he uses it. Another theme is identity. Natsu has to figure out who he is as a dragon in relation to his human side.
Family is a common theme. Natsu building a family with his partner and all the joys and challenges that come with it.
Another theme is growth. Fanfictions may show how Natsu and Erza grow as individuals and as a pair. For example, they could face challenges that force them to become stronger both physically and emotionally, and their relationship evolves as they overcome these obstacles.
A prevalent theme is the power of teamwork. Given their different skill sets, they make a great team. Fanfictions will often highlight how they combine their powers to defeat enemies or solve problems. And of course, there's the theme of loyalty. They are loyal to their friends and comrades, and in the context of their relationship, this loyalty is often a key factor in strengthening their bond.
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.
Adventure is also a prevalent theme. Since they are part of a magical world full of mysteries, fanfictions often send them on exciting adventures. They might explore ancient ruins in search of a powerful magical artifact or embark on a quest to save a kidnapped guild member. These adventures not only test their magical skills but also strengthen their relationship.
One common theme is the idea of forbidden love. Since they are comrades in their original story, a kiss between them can be seen as something that goes against the norm of their friendship. Another theme is the discovery of new feelings. They might suddenly realize their attraction during a moment of danger or when they see each other in a new light.