One interesting concept could be Izuku having the power to manipulate cosmic energy for teleportation across galaxies. This would open up new adventures and challenges for him.
There are also fanfictions where Izuku's quirk has a hidden aspect. Maybe his connection to One For All unlocks memories or abilities from the previous users in a more profound way. For instance, he might be able to access the combat knowledge of the past users directly, almost like having an in - built combat instructor guiding his every move.
One interesting concept could be how Izuku's dark matter quirk might give him unique abilities like the power to manipulate gravitational forces. It could also lead to a new form of combat style that's different from the traditional quirks in the My Hero Academia universe.
Well, initially, Izuku might be overwhelmed by his new cosmic quirk. But as he trains, he becomes more confident. For example, he could start by accidentally causing small cosmic disruptions and then learn to control them precisely.
Well, in some izuku growth quirk fanfiction, a great plotline is when Izuku has to hide the full extent of his growth quirk. Maybe because it's too powerful and he doesn't want to attract the wrong kind of attention. This could lead to some really tense moments where he has to use it subtly to save the day without revealing his true power. Also, there could be a plotline where his growth quirk is tied to his emotions, so he has to learn to control his feelings to master his quirk.
One interesting story could be where Izuku's portal quirk allows him to access different dimensions filled with unique heroes and villains. He might use this to learn new combat techniques.
In some Izuku Pride Quirk fanfictions, his quirk could be linked to the pride of others. So, when he's around people who are proud of themselves or their achievements, his quirk gets stronger. This creates an interesting dynamic where he has to surround himself with positive and confident people to reach his full potential. It also gives room for character development as he learns to inspire pride in others to strengthen himself.
One idea could be a crossover with the "Harry Potter" universe. Izuku could have his own quirk and attend Hogwarts, facing challenges in a magical world while also dealing with his normal quirk - related issues. Maybe his quirk could interact in unexpected ways with magic.
One interesting Izuku chain quirk fanfiction could be about Izuku having a chain quirk that allows him to connect with people's emotions. He uses this quirk to bring together a divided class of heroes - in - training. The chains represent the bonds he forms with his classmates, and he uses these connections to overcome various challenges in the hero academy.
There might be a fanfiction where Izuku's snake quirk has a secondary power of camouflage, like a snake in the grass. He uses this to surprise his opponents during battles. He can blend into his surroundings and strike when the time is right.
Another plot could involve Izuku being part of a secret society of heroes with vampire quirks. They have their own set of rules and ethics regarding using their powers, and Izuku has to learn to navigate this new world while still aiming to be a regular hero.