A possible plot for Deku's dragon quirk fanfiction is that his quirk is actually a result of some secret experiment in the past. He discovers this and has to deal with the fact that there are others out there with similar but more dangerous dragon - related quirks. As he tries to understand his own quirk better, he also has to face off against these new enemies who want to use their quirks for evil.
Well, a great plot could involve Deku using his dragon quirk to explore a hidden realm full of dragon - like creatures. He could learn about the origin of his quirk there. Or perhaps his dragon quirk has different forms, like a water - breathing dragon form for when he's near water, and he has to master switching between forms in battles.
One idea could be Izuku struggling to control his dragon quirk at first. For example, he might accidentally breathe fire during a normal school day, causing chaos. Another plot could involve him discovering unique abilities of his dragon quirk, like flying at high speeds or having super - strong scales for defense. Maybe he has to face a villain who has a quirk that is specifically designed to counter dragon - like powers, which would make for an intense battle.
Well, an interesting plot could involve Izuku facing off against villains who have a special weakness to dragon - like powers. His Dragon Slayer quirk gives him an edge, but he has to learn to use it creatively. For example, if his quirk allows him to breathe fire, he could use it to create smoke screens as well as attack directly. He might also meet other characters with similar quirks and they form a special team to fight against a greater evil.
One interesting concept could be the unique combinations of quirks that result from the fusion. For example, if Deku were to fuse with a character who has a fire - based quirk, the new fused quirk might be something like the ability to shoot green - flamed arrows, combining Deku's original quirk with the fire element in a creative way.
One plot idea could be Izuku struggling to control his new Gravity Quirk at first. He might accidentally make things float or slam to the ground. For example, in his daily life at school, his books start floating during class, causing chaos. Another idea is that he uses his Gravity Quirk to create new combat moves. He could manipulate the gravity around his opponents to make them immobile or off - balance.
Perhaps Deku discovers a dark secret about the origin of quirks and decides that the world would be better off without them. So, he starts a villainous campaign to eradicate quirks. He could form an alliance with other outcasts who have been mistreated due to their lack of quirks or abnormal quirks.
A great plot could be that there is a mystery surrounding the origin of the dragon quirk. Is it related to some ancient power or a genetic experiment? The character sets out on a journey to discover the truth about their quirk. Along the way, they meet other characters with unique quirks and form alliances. They might also encounter villains who want to use their quirk for evil purposes, adding a layer of danger and excitement to the story.
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.
Another interesting plot idea is that Izuku's quirk evolution is tied to his emotions. When he experiences strong positive emotions like hope or love, his quirk becomes stronger and evolves in unexpected ways. For instance, it could manifest as a healing ability in addition to his existing powers. This would make his character development more complex as he has to learn to manage his emotions not just for his own well - being but also for the sake of his quirk evolution.
A possible plot could be centered around Izuku's struggle to control his Phoenix quirk. Since it's such a powerful and volatile quirk, he often loses control. This causes problems not only for him but also for his friends and the people around him. He then has to seek out an old, reclusive hero who once had a similar quirk to learn how to master it.
One idea could be an OC with a sound quirk who can manipulate sound waves to create illusions. For example, in a battle, they make the enemy think there are multiple allies when it's just sound - based images. Another could be an OC that uses their sound quirk to communicate with animals, as different frequencies might be understood by them. A third plot idea is an OC with a sound quirk in a music - based society where their quirk gives them an edge in creating the most beautiful and powerful music, but they face jealousy from others who don't have such a useful quirk.