In a fanfiction where Deku is hit with a truth quirk, there are many possibilities. Firstly, his interactions with his mentors like All Might would become very different. He might admit his doubts about being a worthy successor, which could either strengthen or strain their relationship. Secondly, his classmates would be shocked by some of the things he reveals. For instance, if he tells them how much pressure he feels to be the best. This could lead to more understanding and support among them, or it could create some jealousy and rivalry depending on how the other characters react. Lastly, Deku's own view of himself would change as he has to face his unfiltered thoughts and feelings.
Well, in such a fanfiction, Aizawa might suddenly age rapidly. His physical appearance would change, with wrinkles and grey hair appearing. His once-sharp reflexes could be dulled due to the aging of his body. This could put him in a vulnerable position, especially in a world full of villains. And his relationship with his students might also change. They might start to see him more as a frail old man rather than their strong teacher.
Deku's character development in this scenario is complex. At first, he may be embarrassed and scared by the things he can't help but say. But as time goes on, he learns to embrace this new state. He realizes that being truthful all the time, even about his weaknesses, can be a strength. His relationships evolve as his friends come to appreciate his honesty. He also grows in terms of his hero identity. Instead of trying to project a perfect image, he shows his true, flawed self, which makes him a more believable and inspiring hero in the fanfiction world.
In fanfiction, if Izuku was hit by a love quirk, he might start acting in a very affectionate way towards a particular character. For example, he could become overly protective or constantly seek the person's attention. His normal shy and reserved self might be replaced with a more forward and love - stricken version.
He might lose his control over his own quirk for a while. Since his quirk is erasing others' quirks, if he's hit by a strange quirk, it could disrupt his own quirk's function.
In fanfiction, if Deku gets kidnapped, his friends from U.A. High would likely launch a rescue mission. Bakugo might be especially determined, as much as he tries to hide his concern. They would use their quirks in creative ways to track Deku down.
In the 'deku gets turned into a child fanfiction', it could lead to some really interesting storylines. Maybe he would see the world in a whole new way, with the innocence of a child. His interactions with his mentors could become more like a child - adult relationship where they have to guide him more. Also, his enemies might underestimate him at first, which could create some unique battle scenarios.
He might lose his own quirk temporarily. In some fanfictions, a quirk hit can disrupt a character's own power system.
Well, he could be held by a villain group who wants to find out the secrets of his power. Maybe they'll try to study his One For All quirk.
Well, in the fanfiction, Deku might get a new look that changes how others perceive him. Maybe his friends at U.A. High are really surprised by his new haircut and it could lead to some funny or heartwarming interactions.
If Deku had a quirk in fanfiction, it would likely impact his character development. He might have become more powerful quicker or taken on different enemies. The story could become much more action-packed or focus on different themes.