Well, often you'll see themes related to the relationship dynamics. For example, how his relationship with his partner (whoever that may be in the fanfic) changes. There could also be themes about the future of Izuku's hero career in light of the pregnancy, like whether he'll take a break or find new ways to be a hero while being a parent.
One common theme could be the relationship development between Momo and Izuku. The pregnancy might act as a catalyst for them to grow closer and face new challenges together.
Well, if such fanfics exist, common themes might include the challenges of impending parenthood, the relationship between Izuku and Momo growing stronger in the face of this new situation. There could also be themes related to the support system around them, like how their friends and family react to the news.
Friendship and rivalry are also common themes. Just like in the original story, a female Izuku would have friends and rivals. Fanfics might explore how these relationships are different or similar. For example, her relationship with Bakugo could have a new dynamic. It might also show how she bonds with female characters in ways that a male Izuku might not.
Often, there's the theme of Izuku building a unique team. Just like in a game, he recruits classmates or other characters who have skills that complement his. This team then goes on to face various challenges together, both in the hero world and in virtual gaming - like scenarios. There's also the theme of Izuku unlocking hidden powers or abilities through his gamer knowledge, which is really exciting for readers.
One common theme is rivalry - turned - friendship. Their initial intense rivalry in the original story often forms the basis, and fanfics explore how it can transform into a deeper bond. For example, they might start to train together and realize they can learn a lot from each other.
A common theme is growth. Both Izuku and Setsuna often grow as characters, learning from each other's strengths and weaknesses. For example, Izuku might teach Setsuna about perseverance, while Setsuna could show Izuku how to be more adaptable.
A sense of isolation can be a theme too. Having a unique dragon quirk might make Izuku feel different from others at first. He could be ostracized or misunderstood by some of his peers. But then as the story progresses, he finds ways to connect with others and use his quirk for the greater good, turning that initial isolation into a strength.
The theme of redemption can also be seen in some 'boku no hero izuku quirk fanfic'. Maybe Izuku made some mistakes in the past related to his quirk or how he used it. He then has to work towards making up for those mistakes and becoming a better hero. This theme adds depth to his character and makes the story more interesting as we see him grow and change.
One common theme is their growth as heroes. As they are older, they have more experience and their relationship can be seen evolving in the context of their heroic duties. Another theme could be dealing with more mature emotions like long - term commitment and deeper love.
One common theme is relationship building. Since it's a harem setup, a lot of the story focuses on how Izuku forms relationships with the different characters. Another theme is power growth. As Izuku is in the BNHA world, his hero abilities often develop alongside his relationships.