Adventure might also be a theme. They could be on some sort of journey together, facing challenges and growing closer through those experiences. Another possible theme could be self - discovery. As they interact, they might learn more about themselves.
Love could be a common theme, perhaps the development of a relationship between Afonso and Catarina.
One common theme could be the power of friendship. Even if there is a romantic element, their friendship at the base of their relationship can be explored. Also, themes like family and loyalty might come into play. For example, how their relationship affects their relationships with their families or how they remain loyal to each other in difficult situations.
I'm not sure specifically which 'afonso e catarina fanfic' are popular. You could try searching on fanfiction websites like Archive of Our Own or FanFiction.net. There might be some great stories there.
Another theme is growth. As they go through different experiences, both Kiba and Akamaru grow as characters. For example, they might become stronger ninjas or more empathetic individuals. There are often detailed descriptions of their training and how they overcome obstacles in their path. This not only shows their physical growth but also their mental and emotional development.
Friendship is a very common theme. Most fanfics explore the deep bond between Clara and Marina, showing how they support each other through different situations.
Another common theme is understanding. As both are jinchuriki, they understand the pain and loneliness that comes with it. Fanfics may focus on how they share this understanding and use it to help each other grow. For instance, Gaara might teach Naruto some sand - based jutsu while Naruto helps Gaara with his social skills among the villagers. This mutual growth is often explored in these fanfics.
Another theme could be the time period they are set in. If they are in a specific historical context, the fanfic might explore how they deal with the social norms and expectations of that time. For example, how they navigate a society that might not be fully accepting of their relationship.
Love and relationship development is also a big theme. Since they have a complex relationship in the original Naruto series, fanfics explore how they get closer, overcome obstacles like Sasuke's aloofness in the past. They might show how they communicate better and understand each other on a deeper level. In some fanfics, it can involve things like Sakura finally getting Sasuke to trust her completely.
Common themes include the power of love, of course. Their love is so strong that it can overcome many difficulties in the fanfics. Another is the concept of identity. Bella has to figure out her place in Edward's world and vice versa. And there's the theme of loyalty. They are extremely loyal to each other in most fanfics, and this loyalty is often tested in different ways.
One common theme could be adventure. The characters might go on exciting journeys together.
A third common theme is the power of music. Since both are musicians in real life, fanfics often incorporate their love for music. They might write a song together, or music might be the thing that brings them closer. It gives a really nice touch to the stories as it ties in with their real - life identities.
Power and growth are also common themes. Fanfics might show Sasuke and Naruto achieving new levels of power and how they use it. For example, they could be unlocking new jutsu or developing new skills. Also, the theme of sacrifice often comes up. They might have to sacrifice something, like their personal desires or safety, for the greater good of their village or each other. This is in line with their selfless nature in the original story.