Often, there are themes related to mutual understanding. Given their different outlooks on life, fanfiction may focus on how they come to understand each other better. There could also be themes centered around their dreams and aspirations. Maybe Cana helps Erza pursue a personal dream she had been suppressing, or vice - versa. This creates a rich tapestry of stories within the 'erza x cana' fanfiction realm.
One common theme is friendship development. Since they are comrades, fanfictions often explore how their initial acquaintance grows into a deep and meaningful friendship. Another theme could be about them supporting each other through difficult times, like during battles or personal crises.
It depends on the specific fandom. In some corners of the Fairy Tail fandom (assuming they are from Fairy Tail), it has a following. Writers are drawn to the potential chemistry between the two characters, whether it's a friendship - based or a more romantic exploration in the fan - created stories.
One common theme is the exploration of different worlds. Since Naruto is from his own ninja world and Cana is from the Fairy Tail world, fanfictions often deal with how they adapt to each other's worlds. Another theme is friendship turned into something more. They start as friends or allies and then develop deeper feelings.
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.
One common theme is growth. Since it's about 'little Erza', it often focuses on her development as a character, like learning new magic and becoming stronger. For example, she might start as a novice mage and gradually gain more power.
Another common theme is self - discovery. Through their interactions and adventures together, both Erza and Lucy often learn more about themselves, their powers, and their place in the world of magic. In some stories, Lucy might discover a new power within herself while Erza learns to be more open about her feelings, all thanks to their friendship and the situations they face together.
Love and redemption are very common. Jellal has a lot to make up for, and Erza often represents his path to redemption, so their love story is intertwined with his journey of becoming a better person.
The theme of redemption can also be found. If one of them makes a mistake or has a dark past, the other can be a source of support and help them redeem themselves. This shows the depth of their bond and how they can be there for each other in difficult times.
One common theme is mentorship. Gildarts being a powerful wizard could be shown guiding Cana in her magical growth. For example, in some fics, he might teach her a new spell or how to control her magic better.
One common theme could be the clash of their different worlds. Naruto comes from a ninja - filled world with its own set of rules and values, while Cana is from a world with magic. Their relationship might explore how they overcome these differences. Another theme could be mutual growth. They might help each other become better, Naruto with his ninja skills and Cana with her magic abilities.
One of the common themes is the power dynamic. Given their individual strengths and abilities, how they interact and support each other in terms of power can be explored. Also, redemption is sometimes a theme. If one of them has made a mistake in the past, the other helps in the redemption process, which strengthens their bond.