One plot idea could be exploring the origin of One For All in a Sky High - like setting. Maybe it was created in a special school for heroes long ago. Another could be a character with One For All transferring to Sky High and having to deal with the different hero training methods there.
Well, a really cool plot could be that the One For All power starts to act strangely in the Sky High world. It could be affected by the unique environment or the different types of powers present there. This could lead to the main character having to figure out how to control it again while also dealing with Sky High's challenges like popularity contests among heroes - in - training.
One idea could be creating a new character who has a unique quirk that is initially seen as useless but turns out to be extremely powerful in a specific situation. For example, a quirk that allows the character to communicate with inanimate objects, and they use this to gain information from the rubble during a big villain attack. Another plot could involve a time - travel element where a character from the present goes back to the era when quirks first emerged and has to deal with the different social and power dynamics. Or perhaps a story where the students of Sky High have to team up with villains to fight a greater common enemy, blurring the lines between good and evil.
Izuku Midoriya could be the main character. He already has One For All in My Hero Academia, so it would be interesting to see him in the Sky High setting, trying to adapt to their ways of training and making new friends.
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.
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 idea could be a crossover where Saitama ends up in the My Hero Academia universe. He might accidentally enroll in U.A. High School. His overpowered abilities would shock everyone, and he could end up being both a mystery and an inspiration to the students. Another plot could be about Deku getting some training from Saitama. Saitama's unique training methods might give Deku a new perspective on how to use his power.
A more relaxing plot could be a beach vacation where the characters just unwind. They could build sandcastles, have picnics, and share stories. But of course, there could be some small challenges like dealing with a sudden rainstorm or a seagull stealing their food.
A great plot idea could be Shinsou going undercover in a villain organization. Since his quirk is so useful for deception, he could infiltrate and gather intel. Or perhaps a story where Shinsou has to train a group of new students with difficult - to - control quirks. He'd have to use his own experiences and his mind - control quirk in a mentoring way. Also, a plot where Shinsou discovers a new aspect of his quirk during a life - or - death battle, which gives him an edge and changes the course of the fight.
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.
A fanfiction could focus on a special training exercise that goes horribly wrong. For example, a new type of quirk - suppressing technology is used during training, but it malfunctions and Class 1A has to rely on their non - quirk skills to survive and rescue each other. It would show their growth and teamwork in a different light.
Maybe a vampire villain who is trying to turn the heroes into vampires to create an army. The heroes have to figure out how to defeat this villain without getting bitten. They could use their quirks in creative ways, like using a fire - based quirk to repel the vampires.