Well, character crossovers are often a cool concept in 'boku o hero fanfic'. Imagine a hero from this universe meeting a hero from another well - known superhero universe. It can lead to really unique and exciting storylines. Also, exploring the villains in new ways, like giving them more complex backstories or motives that make them more than just the 'bad guys' is quite interesting.
Izuku Midoriya is often a very popular character in 'boku o hero fanfic'. His journey from being a quirkless boy to a powerful hero gives a lot of room for creative interpretations. Katsuki Bakugo is also popular. His complex personality and his relationship with Midoriya provide great material for fanfic writers.
It could be Midoriya. Imagine Midoriya getting access to Iron Man's technology. He's already a determined and intelligent hero - in - training, and with Iron Man's tech, he could become even more powerful. He might struggle at first to adapt to the new technology, but his strong will would drive him to master it and use it to protect others in new and exciting ways.
One popular idea could be creating an alternate origin story for a character. For example, giving Deku a different quirk acquisition experience that still leads to his growth as a hero.
Well, in a 'Boku no Hero Academia' fanfic with 'breakdown' in the title, it could be about the breakdown of society as we know it in the BNHA universe. For example, if the hero system fails, how would that impact the different characters? Or perhaps it's about a specific quirk breaking down, like if a quirk starts to malfunction and cause problems for the user. This could lead to interesting storylines where the character has to deal with not only the physical problems but also the social implications.
I'm not entirely sure as it could vary greatly. Fanfics often take the original 'Boku no Hero' concept and add their own unique twists. It might be about creating new storylines with the existing characters in a 'slave' - themed (which could be a metaphorical or unique take on power dynamics, not literal slavery in a bad sense) adventure or relationship scenarios.
In fanfics about Shigaraki from Boku no Hero Academia, he is often depicted with more complex backstories. Some fanfics explore his childhood traumas in greater detail, which gives readers a deeper understanding of his motives. For example, they might expand on how his family's neglect led to his current state of mind.
Often, 'boku no hero momo fanfic' focuses on Momo's intelligence. Since she has a creation quirk, fics may explore how she uses it in creative ways. For example, she might create unique tools or strategies.
I really like 'boku no hero academia shouko fanfic'. The character Shouko is often portrayed in interesting ways in these fanfics. Some fanfics focus on her relationships with other characters from the series, which can add new depth to the overall story. For example, her interactions with the main protagonist can be really heart - warming or full of tension, depending on the writer's take.
A cool plot could be that a villain in the Boku no hero world steals Iron Man's technology and starts creating chaos. The heroes then have to figure out how to stop the villain while also dealing with the unfamiliar technology. Or perhaps a young inventor in the Boku no hero world idolizes Iron Man and tries to recreate his suits, but with a twist related to quirks. This could lead to a story about the young inventor's journey, from being an unknown to becoming a key figure in fighting crime with their unique Iron Man - inspired creations.