Aizawa is known for his strict and somewhat reserved nature. This would have a significant impact on Izuku. Izuku, who is often eager and a bit impulsive, would learn to be more patient under Aizawa's guidance. Aizawa's ability to see the potential in his students despite their flaws would also make Izuku more confident in his own abilities. He would know that his father figure believes in him, and that would encourage him to keep pushing himself. Moreover, Aizawa's dry sense of humor might also influence Izuku's own sense of humor, making him a bit more sarcastic in a light - hearted way.
Well, if Aizawa was Izuku's father, it might change how Izuku approaches hero training. Aizawa's no-nonsense attitude could make Izuku more disciplined from a young age.
Aizawa may also interact with Izuku's family during family events or gatherings in the fanfic. He could be a guest and during that time, he could share his insights on Izuku's growth and development. This would not only strengthen his relationship with Izuku but also with his family as a whole.
One plot idea could be Aizawa discovers Izuku's potential early on and secretly trains him. This would add a new dynamic to Izuku's growth as he gets specialized training from Aizawa. Another idea is that Aizawa has to deal with the fact that Izuku is quirkless at first, but still believes in him wholeheartedly. It could also involve Aizawa protecting Izuku from those who might underestimate or bully him because of his lack of a quirk.
Definitely. A lot of fanfic writers are attracted to this idea. They might create scenarios where Aizawa's no - nonsense attitude as a brother helps Izuku become more confident. Or perhaps there are fanfics that deal with the family dynamics between them and how it affects their respective roles in the hero society. Searching through the relevant tags on fanfic websites should lead you to some great reads.
One common theme is family support. Since Aizawa is a strong and experienced hero, he can offer Izuku a lot of support, whether it's in training or dealing with the challenges of being a hero - in - training. Another theme could be the discovery of their relationship. Maybe Izuku didn't know Aizawa was his brother at first, and the fanfic could focus on how they come to terms with this new family connection.
One interesting plot could be Aizawa Shouta taking Izuku under his wing as a mentor figure in a more family - like way. He could help Izuku train and develop his quirk further.
In some fanfictions, Aizawa might be under the influence of a villain's quirk that makes him act against his will. So, he kidnaps Izuku, but later on, he realizes what he's done and tries to make amends. This could lead to a story full of drama and redemption.
It could be Aizawa himself if he's being controlled by something or has some sort of ulterior motive that is not in Izuku's best interest. But if not Aizawa, then there could be a hidden villain who is manipulating Aizawa to kidnap Izuku.