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 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.
Some common themes include the power of love in the form of Erza's overprotection. It can be a driving force for Natsu to become stronger, not just physically but also emotionally. There could also be a theme of self - discovery for both of them. Erza might discover that she can't always shield Natsu from everything, and Natsu might find out more about his own limits and how to push past them with Erza's support.
One common theme could be the exploration of their relationship. How they interact, get to know each other better, etc.
Common themes include self - discovery. Naruto, Erza, and Mirajane all have their own pasts and issues. In these fanfictions, they often help each other grow and understand themselves better. And of course, there's the overarching theme of adventure. Combining the two fictional universes gives a lot of scope for exciting adventures where they battle villains, explore new places, and uncover secrets.
One common theme is growth. The male reader often starts off as a less experienced character and through his interactions with Erza, he grows in strength and character. For example, in many stories, he might learn about loyalty and courage from Erza.
Love and family are very common themes. It often shows how Natsu and Erza's love for each other translates into a strong family bond. Another theme could be growth, as they grow as individuals while also growing as a family unit.
One common theme is the exploration of their relationship in an alternate universe. Since Erza Knightwalker is from a different world in the Fairy Tail lore, fanfictions often play with how Natsu and her interact and fall in love in this new setting.
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.