What could be some interesting plot ideas for 'My Hero Academia Behind the Scenes AU Fanfiction'?

The support class students could be the main characters. They are always in the background creating amazing gadgets for the hero students. Hatsume Mei, for instance, could be shown as she works on her inventions in her workshop, and how she interacts with the other support students and the hero students secretly. They could be the ones who actually have a big influence on the heroes' success but are not always in the spotlight.

An interesting plot could involve an anti - hero who has a hidden agenda that is not entirely evil but also not in line with the traditional hero goals. Maybe they are trying to expose a corrupt part of the hero society from within. They could form alliances with some villains who also have a vendetta against the corrupt elements. This would create a complex web of relationships and moral dilemmas.

One plot idea could be a villain who is secretly a double agent, working for the heroes all along. They infiltrate the villain group and gather information. Another idea is a hero who loses their quirk and has to rely on their wits and combat skills alone, like Batman in the DC universe. And a villain - hero team - up to face a greater threat that neither can handle alone.

A great plot idea would be a mystery - centered one. In this 'My Hero Academia Fantasy AU Light Novel', there could be a series of strange magical events occurring in the world. The characters have to use their unique magical abilities (like Todoroki's ice and fire magic) to solve the mystery. Maybe there's a dark magic user trying to disrupt the balance of the magical world, and the heroes must stop them before it's too late.

One idea could be a 'what if' scenario where the villains and heroes have to team up against an even greater threat from another dimension. It would be fun to see how characters like Bakugo and Dabi interact in this forced alliance.

One idea could be that during Halloween, the villains use the spooky season as a cover to carry out a major heist. The heroes have to figure out their plan while also dealing with all the Halloween chaos in the city. For example, there could be trick - or - treaters getting in the way and the villains using Halloween decorations to hide their traps.

One idea could be reincarnating as a minor villain and trying to reform. For example, using knowledge of the future to avoid getting caught up in big evil plans. Another could be reincarnating as a quirkless student but finding a unique way to be a hero, like developing amazing combat skills without a quirk. Maybe reincarnating as a side character and becoming the mentor to the main heroes, guiding them with knowledge from the original story.

One idea could be Fumikage exploring a new power within his Dark Shadow. Maybe he discovers a way to temporarily split Dark Shadow into multiple entities, each with a different ability. For example, one could be super fast while another could have enhanced strength.

Another plot could be that the reincarnated person has a unique quirk from their past life that is very different from the quirks in the My Hero Academia universe. This could lead to them being both feared and respected. They might have to go through a lot of training to control it and prove that they are on the side of good.

One idea could be a mystery in the dorms. For example, strange things start happening like items going missing or strange noises at night. The students could team up to solve it, using their different quirks in the process. Another plot could be a friendly competition between the dorm floors, like a quirk - based Olympics. This would show off their abilities and also strengthen the bonds between the students.