In My Hero Academia Izuku Harem Fanfiction, the 'accidental closeness' trope is quite prevalent. For example, Izuku might accidentally fall on one of the girls in the harem, leading to an embarrassing yet cute moment. There's also the 'rivalry - turned - love' trope. Some of the characters who initially see Izuku as a rival might later develop feelings for him and join the harem.
In 'Boku no Hero Academia Izuku x Harem Fanfiction', a popular trope is the 'fish - out - of - water' situation. Since Izuku is suddenly surrounded by a group of girls interested in him, he may find himself in awkward or unexpected social situations. Also, the 'shared secret' trope can be seen. Maybe they all share a secret related to their quirks or a hidden mission, which binds them closer together as a harem. Additionally, the 'jealousy' trope is often present, with the harem members getting jealous of each other's time with Izuku.
The 'Underdog to Hero' trope is also common. Even when Izuku has a new quirk, he often starts off being underestimated. He has to prove himself not only to his classmates but also to the heroes around him. This trope is great for character development as we see Izuku grow in confidence and skill.
One popular story could be 'Izuku's Harem Adventure'. In it, Izuku might find himself in various situations where he gradually forms a harem with different characters from the 'My Hero Academia' universe. Each character brings a unique dynamic to the story, like Ochaco's bubbly nature or Momo's intelligent charm.
One popular trope is the 'Quirkless Hero' where a character without a quirk manages to become a hero in some way. It's often used to show the power of determination and creativity. Another is 'Villain Redemption', where a villain character from the series gets a chance to turn good and change their ways.
One popular trope is the 'Quirkless Hero' where a character without a quirk manages to become a hero through sheer determination and intelligence. Another is 'Villain Redemption', where a villain decides to change their ways. 'Time Travel' is also quite common, with characters going back in time to fix things in the My Hero Academia universe.
Ochaco Uraraka is a common character in the harem. Her kind and friendly nature makes her a likely candidate. Momo Yaoyorozu is also often included. Her intelligence and elegance add an interesting dynamic to the harem. And Tsuyu Asui could be part of it too, with her unique personality.
One popular trope is the 'Quirk - based Magic'. In these fanfictions, quirks are often combined with magic elements, creating unique and interesting power systems. Another is 'Alternate Universe' where the characters are placed in a completely different setting, like a medieval fantasy world. And 'Character Crossovers' are also common, for example, a character from My Hero Academia crossing over with a character from a different anime in a fantasy scenario.
One popular trope is the 'outsider' hero. In My Hero Academia monster fanfiction, a character who is part - monster might be seen as an outsider in a world of 'normal' heroes. They have to struggle not only with fighting villains but also with acceptance. Another trope is the 'hidden power' where the monster - like abilities are initially not fully understood or controlled by the character but turn out to be extremely powerful. For example, a character might have a monstrous form that gives them super strength and endurance but they first have to learn how to transform at will.
Another common trope is the main character having memories of their past life. This often leads to them having a different perspective on the events in the MHA universe. They might use their knowledge of the original story to their advantage, like knowing the weaknesses of certain villains or the secrets of powerful heroes.
The 'Secret Identity' trope is also quite common. The reader has a secret identity, maybe related to a special power or a connection to a villain or hero. And of course, the 'Love Interest' trope. There are often stories where the reader has a romantic relationship with one of the characters from My Hero Academia, like Deku or Bakugo.