Adventure is a big theme. Since they are both part of Fairy Tail, they often go on quests together in fanfictions. During these adventures, their relationship deepens and turns into love. Also, the theme of protecting each other is common. They are both strong, but still show vulnerability when it comes to the other's safety.
Many fanfictions focus on the development of their relationship from friendship to love. They start as comrades in Fairy Tail, sharing a bond of friendship. But as the story progresses, feelings beyond friendship start to emerge. There is also the theme of sacrifice, where one might be willing to sacrifice for the other's well - being, which is a sign of their deepening love.
One common theme is the 'forbidden love' aspect. Since they are comrades in the guild, some fanfictions play on the idea that their love is something they have to keep secret. Another theme is 'overcoming differences'. Natsu is impulsive while Erza is more disciplined, and fanfictions might explore how they bridge these gaps in a romantic relationship.
One common theme is the 'opposites attract' idea. Since Natsu is more impulsive and Erza is more disciplined, their differences are often explored as something that draws them together. Another theme is the protection aspect, where either Natsu protects Erza or vice versa during dangerous situations in the story.
In many 'Fairy Tail End is Natsu' fanfictions, the theme of redemption can be found. Natsu might have to make up for past mistakes or face the consequences of his actions in a more profound way as the end approaches. Another common theme is the exploration of his dragon - slayer heritage. How his connection to dragons plays a role in the final events of the story is often explored. And of course, the theme of unity within Fairy Tail. Natsu is usually at the center of bringing everyone together to face the final threat or to celebrate the end of a long journey.
Often, there is the theme of loyalty. Even in a slave - like situation, Natsu's loyalty to his friends or certain ideals might be tested or emphasized. Also, growth is a theme. He may grow as a character through the challenges he faces in this different status compared to his normal role in the Fairy Tail world.
Common themes in fanfictions about Natsu and Mira from Fairy Tail include growth. Both characters can grow as individuals through their interactions. Natsu might become more mature in how he approaches problems, and Mira could become more confident in her abilities. The theme of family is also there, as the Fairy Tail guild is like a family. Natsu and Mira's relationship within this family - like environment can be explored, such as how they support each other during tough times in the guild or when dealing with personal issues.
They have great chemistry. Natsu is the impulsive and powerful fire wizard, while Erza is the strong and disciplined armor wizard. Their contrasting personalities make for an interesting dynamic. They also have a long history in the Fairy Tail guild, which gives fanfiction writers a lot of material to work with.
One great fanfiction could be 'A New Adventure'. It focuses on Natsu and Erza going on a quest together that was not part of the original storyline. They face new challenges and in the process, their relationship deepens in a very platonic yet heartwarming way.
Well, a big theme is the growth of their relationship. It doesn't have to be romantic in a sexual way. It can be about how they become closer as comrades. Also, the theme of protecting each other is quite common. Natsu is always ready to protect Lucy, and vice versa, and fanfictions like to play around with this dynamic, showing different scenarios where they safeguard one another.
One common theme is domestic bliss. They might show Natsu and Erza doing normal couple things like cooking together or decorating their home. Another theme could be facing challenges as a couple. Since they are from a magical world, these challenges could be related to magic, like protecting their family from a new magical threat.
One common theme is the test of Erza's strength. In many fanfictions, she endures torture as a way to show how strong she is both physically and mentally. For example, she might be captured by enemies who try to break her will through various forms of torture, but she always manages to hold on. Another theme could be the development of her relationships. The torture she endures can make her friends or comrades realize how much they care about her, leading to deeper emotional bonds.