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 that Izuku's time quirk allows him to reverse time for a short period during battles. So he can correct his mistakes and outwit his opponents. For example, if he made a wrong move in a fight against a villain, he could reverse a few seconds and choose a better strategy.
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.
One idea could be Izuku struggling to control his vampire quirk at first. For example, he might accidentally bite a classmate during a training session when his quirk goes out of control. Another plot could involve Izuku having to hide his vampire nature from his friends and family for fear of being ostracized. Maybe he only reveals it to a select few who help him learn to use it for good.
One idea could be Izuku struggling to control the All for One quirk at first. He might accidentally absorb quirks he doesn't want, leading to chaos. For example, he absorbs a quirk that makes him grow extra limbs and has to figure out how to hide it. Another could be that villains target him more, thinking he'll be easy to corrupt with such a powerful quirk.
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.
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.
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.
Well, a great plot could be Izuku's journey to master his fire quirk. He might seek out a retired hero with a fire - related quirk to train him. Along the way, he discovers that his fire quirk has a unique property, like it can burn through certain types of energy shields that most other quirks can't. This makes him a target for villains who want to study his quirk, and he has to fight to protect himself and his secret.
One idea could be Izuku struggling to control his shadow quirk at first. Maybe it has a mind of its own and he has to learn to cooperate with it. For example, in battles, the shadow could act independently, which might cause trouble but also surprise opponents. Another plot could involve Izuku using his shadow quirk to explore hidden or dark places. Since shadows can reach areas that are hard to access, he could use it for rescue missions or to find secrets in the city.
A great plot idea could be Izuku finding out that his energy absorption quirk is related to an ancient power. He then has to go on a journey to discover the origin of his quirk, meeting different characters along the way who either help or hinder him. Also, he could face a villain who has a quirk that nullifies his energy absorption, forcing him to rely on his other skills and the support of his friends. And perhaps he discovers that his quirk can be used not only to absorb but also to transfer energy, which could lead to some interesting team - up scenarios.