The contrast between their personalities. Aoyama is flamboyant and a bit of an attention - seeker, while Iida is very serious and by - the - book. This creates an interesting dynamic in fanfictions where the writers can explore how they interact, whether it's in a romantic or a platonic sense.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). There are often numerous works tagged with 'Aoyama x Iida'. Many writers post their stories there, and you can search specifically for this pairing. Another option is FanFiction.net, which also has a large collection of fan - made stories.
One popular aoyama x iida fanfic is 'The Unlikely Bond'. It beautifully explores their relationship in the context of their different personalities within the My Hero Academia universe.
Another one is 'The Hidden Connection'. In this fanfic, a mysterious event occurs in the school that only Aoyama and Iida seem to be aware of. They have to work together to solve it while keeping it a secret from others. It's full of mystery and some really sweet moments between the two characters as they start to trust each other more and more.
One common theme is growth. Both Iida and Momo are characters with great potential for growth in the original series. In fanfiction, they often grow together, whether it's in terms of their quirk development or personal relationships.
One common theme is mutual growth. They both inspire each other to become better heroes. For example, Deku's determination might push Iida to be more fearless, and Iida's sense of order and discipline can influence Deku to be more organized in his hero training. Another theme is friendship - turned - romance. Usually, they start as friends and classmates, and then as they get to know each other better, romantic feelings develop.
Another theme is the support they give each other in their respective goals. Hatsume with her inventions and Iida with his hero training. In many fanfictions, they help each other grow, for example, Hatsume might come up with a gadget that helps Iida in his combat training, and Iida might give Hatsume some advice on how to present her inventions better.
One common theme is the conflict between their different ideologies. Stain has his extreme views on heroes, while Iida has a more traditional heroic view. This contrast often creates an interesting dynamic in the stories.
One common theme is friendship development. Since they are classmates in the My Hero Academia universe, many fanfictions explore how their initial acquaintance turns into a deep friendship. For example, they might start off just as study partners and gradually become more like siblings who support each other no matter what.
Another theme is self - discovery. As they interact, they learn more about themselves. For example, in some fanfictions, Monoma realizes he has more in common with Aoyama than he thought, which helps him grow as a person. It's really interesting to see how their relationship can be a catalyst for personal development.