One common theme is adventure. The OC often joins Katara on her quests and they face various challenges together. It's a great way to develop their relationship.
Well, Fanfiction.net is also a great place to look for katara x oc fanfiction. Some stories might have unique takes on the relationship between Katara and the original character. You can read the summaries and reviews to find the ones that seem interesting to you.
The melding of their cultures. In many such fanfictions, Zuko and Katara will find ways to combine Fire Nation and Water Tribe traditions. Maybe they have a wedding ceremony that has elements of both cultures. Also, they often face external challenges together. Like dealing with those who oppose their union due to old grudges between the two nations.
One popular theme is self - discovery. The self - inserted character (SI OC) often has to figure out their place in the Avatar world, much like Katara did in the original series. Another theme could be friendship. They might form unique bonds with the existing characters, like Katara. And power exploration is also common, as the SI OC may have special abilities or learn to master waterbending in new ways.
To write a compelling SI OC, start with a unique backstory. Maybe they come from a different world or have a special family situation. Give them distinct personality traits, like being really stubborn but also extremely loyal. And make sure their goals are clear, whether it's to master waterbending or to make a difference in the war - torn Avatar world.
Katara could be heartbroken. She might initially be in denial, not believing that Aang has actually left. Then she could become angry, feeling betrayed by Aang's sudden departure.
Some fanfictions explore their role in rebuilding the world after the war. Zuko and Katara could be working together to restore balance between the nations. This kind of fanfiction often shows their leadership skills and how they complement each other.
The OC's character can be developed through her reactions to different situations. When she first meets Sasuke, how does she respond to his coldness? Does she try to break through his barriers or is she put off? With Gaara, when she learns about his past, does she pity him or see his strength? Also, give her a moral code. If she believes in always helping the weak, it will affect how she treats Sasuke when he's in a dark place and how she interacts with Gaara's people in the Sand Village. Her hobbies and interests can also be used to make her more three - dimensional. For example, if she loves cooking, she could cook for Sasuke and Gaara, and through that, their relationships can grow and develop.
One great 'zuko x katara fanfic' is 'The Balance Within'. It beautifully explores their relationship as they work together to bring peace to the four nations. The character development is really well - done in this fic.
I really like 'katara x sokka fanfic' named 'Shared Secrets'. In this fic, katara and sokka discover things about each other that they never knew before, which brings them closer in a very heartwarming way. Then there's 'Journey of the Heart' where they go on a journey together and during this journey, their relationship deepens in a romantic sense. And don't forget about 'Unspoken Feelings', which is all about the unsaid emotions between them that gradually come to the surface as the story progresses.