In a fanfiction where All for One raises Izuku, Izuku's quirk development might take a different turn. All for One could potentially train Izuku to use his quirk in more devious ways. He might also give Izuku additional powers or abilities that are not part of his original quirk. This would make Izuku a very different kind of threat in the My Hero Academia universe. His presence would be a major disruption to the balance between heroes and villains, and the story would revolve around how the other characters deal with this new, All for One - influenced Izuku.
The overall theme of the story can shift in izuku all for one fanfiction. The original My Hero Academia focuses on the growth of a hero with a 'good' power. But with Izuku having All for One, the themes of redemption, the nature of power (whether it's inherently good or bad), and the idea of breaking free from the expectations associated with a particular power become more prominent.
Well, his relationship with Bakugo would likely change a great deal. If Izuku is not human, Bakugo might view him as even more of an oddity or a threat. Instead of just seeing him as a rival with a quirk, he could be more hostile or overly cautious around Izuku.
It probably changes the power dynamics. With Izuku being godlike, he might be able to defeat villains much more easily than in the original, which could change the overall plot progression.
Well, if Izuku had a symbiote in My Hero Academia fanfiction, it would completely change his power dynamics. Firstly, his physical abilities would be enhanced significantly. He could move faster, jump higher, and have greater strength without fully relying on One For All. The symbiote might also give him new combat skills like the ability to create weapons from its own form. This would make him a more versatile hero in combat situations, able to adapt to different types of villains more easily.
His blindness makes his hero training more challenging. He has to rely on other senses. For example, he might focus more on his hearing to detect enemies' movements. He also has to train his sense of touch to better understand his surroundings.
Often, Izuku reacts with shock and disbelief at first. He can't fathom why someone he trusted would turn on him.
If Deku and All for One interacted, it could change the story drastically. For example, Deku might learn some dark secrets about the origin of One for All that All for One knows. This new knowledge could either make him doubt his path or give him new motivation to prove that his way of using power is right.
The Izuku Luck Quirk in fanfiction could also impact his training at U.A. His luck might make him find rare training materials or encounter mentors who were not part of the original story. This could accelerate his growth as a hero. Moreover, his relationships with classmates could be different. His luck could make him seem more mysterious to his peers. Some might be jealous of his quirk, while others might be curious and want to team up with him more often. This would lead to a different dynamic within Class 1 - A.
Well, it makes it a lot more challenging. He has to rely on different skills. For example, he can't just see an opponent's attack coming like before. He has to use his sense of touch more, like feeling the air currents change when someone is about to strike.
In these fanfictions, Izuku often develops more confidence in his relationships. For example, he may start off shy around the girls in his harem but gradually become more assertive. This is because the support and love from his harem give him an extra boost.