One theme is the adaptation of the original story's power dynamics. In a genderbend harem fanfiction of Boku no Hero Academia, the powers might be used in different ways depending on the new gender of the characters. Also, friendship and rivalry often play a role. The characters in the harem may be friends who also compete for the affection of the main character, or they could be rivals who gradually develop feelings for each other.
In these fanfictions, identity is a big theme. The gender - bent characters have to deal with their new identities and how it affects their place in the hero world. There's also the theme of acceptance. How do the other characters accept the new - gendered versions? And of course, the harem aspect brings in the theme of love and attraction. It's about the different ways the main character attracts others and how they handle all those relationships, which can be full of drama, comedy, and heartfelt moments.
Power and how it attracts others is often a theme. In these fanfictions, the main character with unique powers, like Naruto's Nine - Tails chakra or a hero's quirk in Boku no Hero Academia, might draw the attention of multiple characters, leading to a harem situation. Also, the idea of friendship evolving into something more within the harem is quite common.
A major theme is also the idea of support. The characters in the harem are often there to support Izuku in his journey to become a great hero. This can include emotional support, like when he's feeling down about his progress, or practical support during battles or training. And of course, there's the theme of love and attraction, which is a fundamental part of any harem story. Different characters in the harem will show their love for Izuku in various ways, whether it's through acts of kindness, protecting him, or just being there for him.
Power and responsibility is also a common theme. Just like in the original 'Boku no Hero Academia', the OC in these fanfictions has to balance his new - found powers with the responsibility of being in a harem. For example, he has to protect his harem members while also using his powers for the greater good. It's a complex dynamic that adds depth to the story.
One common theme is mystery - solving within the hero society. Detectives in these fanfictions often have to figure out who is behind certain villainous acts or strange occurrences. Another theme is the discovery of hidden powers or secrets related to the heroes. For example, a detective might find out that a hero has a secret ability that they've been hiding.
Another theme is the idea of heroism. Both shows revolve around heroes. Fanfictions might focus on how Ben 10, with his alien forms, would be perceived as a hero in the 'Boku no Hero Academia' world, or vice versa. For example, a fanfic could show Ben 10 using his powers to save UA students from a new threat. It also delves into what it really means to be a hero in different contexts.
A common theme is power. Both Naruto and 'boku no hero academia' deal with characters having unique powers. So, in fanfiction, it's often about how the characters' powers interact or compare. For example, Naruto's chakra control compared to the quirk control in 'boku no hero academia'.
One common theme is mentorship. Teachers in these fanfictions often take on the role of guiding students, like how they can better control their quirks. Another theme is the teachers' own backstories. Many fanfictions explore what made the teachers become educators in the first place.
One common theme is friendship evolving into something more. For example, two female characters who start as comrades in hero training might gradually realize they have romantic feelings for each other. Another theme is the struggle against society's expectations. In the 'Boku no Hero Academia' world, heroes have certain images to uphold, and a lesbian relationship might face challenges from the public or the hero community.
One common theme is friendship. Just like in the original series, the pets and their owners or the pets among themselves form strong bonds of friendship. For example, a dog might be extremely loyal to its hero owner and help them in times of need.
One common theme is the exploration of Stain's sense of justice. Since he has a very distinct view on what makes a true hero, fanfictions often delve into this concept, comparing it with the more mainstream ideas of heroism in the 'boku no hero academia' universe.