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.
He could start by training to absorb more types of energy. For example, if he can currently only absorb physical energy like kinetic or thermal, he could learn to absorb electromagnetic energy too. This would open up new possibilities for his quirk usage. Another way is to increase the efficiency of his absorption. Maybe he can work on reducing the time it takes to absorb energy or increase the amount he can hold at once.
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 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.
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 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.
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 possible plot could be Izuku discovers his energy manipulation quirk has a unique side - it can interact with different dimensions' energy. He accidentally opens a small rift during a training session. This leads to a series of events where he has to learn to control his quirk better to close the rift before it causes chaos. He teams up with his classmates, using their quirks in combination with his to stabilize the rift.