Well, Aizawa might be a bit surprised at first. He's a no - nonsense kind of teacher. He could either be intrigued by the creativity of the fanfiction or be a bit put off by it, thinking it's a distraction from the real training and hero business. He might also tell Izuku not to get too caught up in fictional ideas and focus more on improving his real - life skills as a hero - in - training.
If Izuku tells Aizawa about OFA fanfiction, Aizawa may have different reactions. He could be dismissive, thinking it's just some silly fictional stuff that has no place in the serious world of heroics. On the other hand, he might see it as a way for Izuku to explore different aspects of One For All and heroism in a more creative way. However, he would probably remind Izuku that while fanfiction can be fun, it's not the same as real - life hero training and that Izuku should keep his priorities straight.
He could be a bit amused and say something like 'Don't let that fanfiction take over your real hero work, Midoriya.'
One scenario could be that Izuku is on the roof to get some fresh air and clear his head. Aizawa, being the observant teacher he is, follows him there. He could then share some of his own experiences with Izuku, like how he overcame difficulties in his youth, which would inspire Izuku and strengthen their relationship in the fanfiction world.
Perhaps Izuku was skipping class and went to the roof. Aizawa noticed his absence and suspected he might be there.
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.
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.
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.
One good one might be 'Aizawa's Guidance for Izuku' which focuses on their unique mentor - mentee relationship evolving in an interesting way. It has great character development.
One reason could be that Izuku has been pushed to his limit. Maybe Aizawa has been overly critical or strict in a way that Izuku can't take anymore. For example, if Aizawa constantly doubts Izuku's abilities despite his efforts, it could lead to Izuku snapping.
Well, it could be about Izuku confronting Aizawa over some misrepresentation in the fanfiction. Maybe Izuku doesn't like how Aizawa is being portrayed as too strict or unfair in the fic.
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.