One possible plotline could be that Izuku has a quirk that is initially very weak but has an unexpected growth potential. He might struggle to control it at first, causing some chaos at school. For example, if his quirk was related to telekinesis but he could only move small objects, and every time he got excited, things would start flying around randomly. His friends would have to help him learn to control it, and this would strengthen their bonds. Another plotline could involve a quirk that is considered 'evil' in society, like a quirk that can manipulate shadows in a way that seems menacing. Izuku would then have to prove that he can use it for good, facing discrimination and misunderstanding along the way.
Perhaps Izuku has a quirk that allows him to communicate with animals. This could lead to him uncovering a plot by some villains who are using animals for their evil experiments. He would rely on his new - found ability to team up with the animals and stop the villains. His classmates might be skeptical at first, but as he starts to gather information and prove his quirk's usefulness, they would come to accept and support 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 idea could be that Izuku's quirk is related to time manipulation. He could use it to slow down time during battles, giving him an edge in combat. For example, he could dodge attacks with ease and plan his counter - attacks carefully.
Another plot could involve Izuku being in a situation where his harem has to work together to protect him. Maybe they find out about a secret plot against Izuku and combine their unique quirks to keep him safe. This would show the different relationships he has with each of them and how they interact as a group.
Perhaps Izuku's father is a scientist who was working on a top - secret project related to quirks. He might have accidentally given Izuku his quirk through an experiment. This could lead to a story where Izuku discovers the truth about his quirk and his father's role in it, while also dealing with the ethical implications of such an origin for his powers.
A great fanfiction idea might involve Izuku's Oraphin side helping him in unexpected ways during the sports festival. For example, it could give him an edge in the obstacle course by allowing him to understand the movements of the other competitors better. It could also lead to some interesting interactions with his classmates, especially those with animal - like quirks.
Well, a cool concept could be Deku's quirk evolving in a completely unexpected way. Like, his One For All starts to interact with other quirks in a unique fashion. Maybe it combines with Uraraka's zero - gravity quirk, allowing Deku to not only have super strength but also be able to manipulate the gravitational pull of objects he touches. This would open up a whole new world of abilities for him to explore and master.
One interesting plotline could be Izuku using his voice quirk to communicate with animals. Since many animals respond to different frequencies and tones, his voice quirk might allow him to understand and direct them. For example, he could use it to get a flock of birds to create distractions during a villain attack. Another plotline might involve Izuku using his voice quirk to soothe people in distress. His voice could have a calming effect, which would be useful in rescue situations or when dealing with panicked civilians. And a third plotline could be Izuku having to train his voice quirk in secret because it's considered too dangerous or unpredictable, and he has to find unique ways to control and develop it without getting caught by the wrong people.
One interesting plotline could be Izuku using his Pokemon - like quirk to battle villains in a unique way. For example, he might summon Pokemon - inspired creatures with different powers to counter various villain attacks.
His relationship with All Might could become more of a partnership. With Izuku having his own quirk, they could team up to fight villains more often. All Might would no longer feel the burden of having to pass on his power, and Izuku would have more confidence in himself, leading to a more equal and collaborative relationship between them. For example, if Izuku's quirk was related to super strength like All Might's but in a different way, they could combine their powers in combat to defeat stronger enemies.
In some fanfictions, because of his powerful quirk, Izuku becomes a sort of mentor figure to his classmates. For example, with his enhanced understanding of his quirk in these stories, he can help his friends train and develop their own quirks better. So his relationship with them shifts from being just a peer to a more guiding one.