There's also a possibility that the main antagonist is another student at U.A. High School. This student could be competitive and feel threatened by the girl's relationship with Izuku. They might use underhanded tactics to try and make the girl fail or lose her confidence, adding a layer of drama and conflict to the fanfic.
Obviously, Izuku and All Might are the main characters. Izuku is the one with the relationship to All Might described in the title, and All Might is the object of Izuku's admiration as in the 'little girl' - like admiration.
Well, without reading it, we can only guess. It could be that Izuku, in the context of this fanfic, has a very cute and innocent admiration for All Might similar to how a little girl would look up to her hero. Maybe it shows Izuku following All Might around, learning from him, and getting into all kinds of situations where he has to prove himself while being under All Might's wing.
Perhaps a jealous classmate who has always been in Izuku's shadow. Now that Izuku is a girl, this classmate sees an opportunity to undermine her. They spread rumors about how Izuku's transformation is some sort of cheat or that she's not the same reliable person she was as a boy. This classmate's actions and attempts to sabotage Izuku would make them the main antagonist.
It could be a character who somehow discovers Izuku's secret and tries to use it against her. Maybe a rival at school who is jealous of Izuku's progress and sees this as a way to get her expelled or discredited in the hero community.
Well, the plot could be about a young girl who idolizes Izuku. Maybe she's inspired by All Might's belief in Izuku and tries to follow in his footsteps. It could involve her training to be a hero, facing challenges like Izuku did, and learning valuable lessons along the way.
Well, it depends on how the author of the fanfic has characterized Figure 13. However, if the premise is that Figure 13 is a girl in this fanfic, then that's how it is within the context of that particular story. Different fanfics can have different interpretations and characterizations, but in this one, it's stated that Figure 13 of Izuku is a girl.
In a fanfic where All Might adopts Izuku, Izuku's life would take a different turn. He'd be part of All Might's family, which means he'd be exposed to a different way of life. All Might could teach him not just about heroics but also about life values. This would shape Izuku into a more well - rounded person. Izuku would also have a stronger support system. When it comes to his quirk, All Might could help him understand and control it better. He might even be able to use All Might's influence to get better equipment for Izuku. All in all, this adoption would enhance Izuku's story in many positive ways.
He might do it for a bet. Just like some friends might bet on who can pull off a crazy stunt, his friends could have bet him that he can't dress like a girl and act the part for a certain period.
Draco could be seen as the main antagonist. Since the title implies that Harry breaks his face, it's likely that Draco did something to provoke Harry in the first place. Maybe he was bullying Harry's friends or being his usual snobbish self towards Harry.
Yes, there are quite a few out there. Some explore how All Might's relationship with Izuku would change if he was his father. For example, in some fanfics, All Might starts training Izuku much earlier in his life, which gives Izuku a huge advantage in developing his quirk. These fanfics often delve into the emotional side of their relationship as well, like how Izuku might feel having a hero as a father.