Well, one of the things you'll often see is the OC's relationship with the canon characters. It could be a friendship, a rivalry, or even a romantic relationship. For example, the OC might become best friends with Midoriya or have a friendly competition with Bakugo. Also, the OC usually has to face some sort of conflict, whether it's against villains or internal struggles related to their quirk or identity.
The theme of overcoming obstacles is very common. In these fanfictions, the lesbian couple has to overcome various obstacles like discrimination from other students or even some of the teachers. They also have to deal with the challenges of being heroes at the same time. For instance, they might have to hide their relationship while on a joint mission to avoid negative reactions from their teammates. This creates a lot of tension and drama in the story, which is a key part of many of these fanfictions.
One common theme is self - discovery. The OC, being a gamer in a new world like My Hero Academia, often has to figure out their place and abilities. Another theme is power - up. Just like in games, the OC usually gets stronger over time.
Love and romance can be a theme as well. The SI/OC could fall in love with one of the characters from the original series. It could be a slow - burn relationship with lots of obstacles, like differences in their hero goals or social status within the hero community. This adds a whole new layer of drama to the fanfiction.
Another theme is self - discovery. The grey OC has to figure out who they are and what they stand for. They're not following the typical hero or villain path, so they have to create their own identity. This often involves exploring their powers, their values, and their place in the world of My Hero Academia.
Male ocs usually have a sense of loyalty. Whether it's to their friends, their classmates at the hero academy, or their ideals. This loyalty is often tested throughout the fanfiction. They might have to choose between following the rules and doing what they think is right, and their loyalty plays a big role in those decisions.
A lot of anti - hero OCs have a sense of justice that is different from the mainstream heroes. They might not care about fame or public approval like the heroes do. Instead, they focus on what they think is right, which could involve breaking some laws or going against the hero establishment. Their appearance might also be more edgy or different from the clean - cut hero look. They could have a more 'street - smart' attitude rather than the polished hero demeanor.
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.
Love and friendship are also common themes. The fanfics often show how the OC and Todoroki grow closer, whether it's through shared experiences at UA or facing external threats together. Their relationship can start as friends and slowly develop into something more romantic over time.
A lot of these fanfictions also deal with the theme of acceptance. The OCs may have to accept their own feelings for another female character in a world that might not be fully accepting. It could be about coming out or just dealing with internalized homophobia. Additionally, there's often the theme of teamwork. Since My Hero Academia is about heroes, the femslash pairings might be heroes who have to work together and their relationship develops during their heroic deeds.
One great 'oc boku no hero academia fanfiction' is 'The New Hero in UA'. It has an interesting original character who brings a fresh perspective to the story. The plot is engaging as the oc has to deal with the challenges of fitting into the UA environment and making friends while also facing villains.