In this fanfiction, it might also be that Aizawa's husband has some sort of special ability. Class 1 - A could be initially skeptical of him, but as they interact more, they come to respect him. He could use his ability to help the students in a unique way, like helping them improve their teamwork or understand their quirks better. And through this whole encounter, the students get to see a different side of their teacher, Aizawa, as well.
Perhaps the story involves the students of Class 1 - A learning valuable life lessons from Aizawa's husband. He might share stories about Aizawa's past that the students didn't know, which could strengthen their bond with their teacher. For example, he could tell them about how Aizawa overcame difficulties in his training days, and this could inspire the students in their own hero - in - training journey.
Obviously, the students of Class 1 - A would be main characters. There are so many of them with diverse personalities like Midoriya, Bakugo, and Uraraka. They would bring their own reactions and interactions to the story.
Maybe in this fanfiction, Class 1 - A is on a training mission when they accidentally stumble into a time - warp and meet Future Deku. Future Deku could be a super - powerful hero, and he starts to train them in advanced techniques that they haven't learned yet. He might also share some of his future experiences with them, like the battles he has won and the villains he has faced, which would inspire Class 1 - A to strive harder in their hero training.
In this fanfiction, perhaps there is some sort of danger that threatens Tsuna's class. Iemitsu arrives just in time to help. He uses his skills and knowledge to protect the class. Along the way, the students get to know him better and Tsuna has to deal with the complex relationship he has with his father while in the context of his school life.
Maybe in this fanfiction, the class 1a students from the present time travel to the future and meet an older, more mature Bakugou. He could be a pro - hero now, and they are amazed by how much he has changed and grown. He might show them some new and powerful moves that he has developed over the years.
One possible plot could be a school event where Class 1A students visit Mitsuki's place of work. They could learn about her profession and she could share some interesting stories. Maybe some of the students, like Bakugo, could have an emotional moment with her.
One idea could be that Gohan is teaching a self - defense class and Goten pretends to be a beginner to surprise everyone. Another is that Gohan's class is a seminar on Saiyan history and Goten adds some new perspectives from his own experiences.
One possible plot could be that due to some false accusations of improper teaching methods, Aizawa gets fired. His students then band together to prove his innocence. They collect evidence of his effective teaching, like how he has helped them improve their quirks and grow as heroes in training. Eventually, they manage to clear his name and he is reinstated.
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.
Perhaps in the fanfiction, Aizawa gets One For All and decides to keep it a secret. He then starts training in isolation to master it. As he trains, he discovers new aspects of the power that are different from what previous users experienced, due to his own unique quirk and personality. He might use it to secretly protect his students from threats that are beyond the scope of his normal abilities.
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.