Izuku could develop by learning to accept his vampire quirk. At first, he might be scared or ashamed of it, but as he realizes the potential it has for good, he grows more confident. For example, when he saves someone using his vampire - enhanced abilities.
One way is through his relationships. If he has a love interest, he might be worried about hurting them because of his vampire side. This would force him to become more in control of his quirk. Also, when his friends find out about his quirk, he could develop by learning to trust them and rely on their support to handle the difficulties that come with it. He could also develop morally as he decides how to use his vampire powers, like whether to use the ability to drink blood only in emergencies or not at all.
His relationship with his mother could become more complex. She might be worried about his new nature and try to protect him more. With his friends, like Bakugo, they might initially be scared or distrustful when they find out about his quirk.
Some characters might be immediately terrified. They could avoid Izuku or even try to drive him away. For example, classmates who don't understand his quirk might spread rumors about him.
The Gamer Quirk also changes Izuku's relationship with others. He can now offer unique insights based on his quirk. For instance, he might be able to analyze a villain's attack pattern like it was a boss fight in a game. His friends and allies can then use this information to their advantage. This makes him a valuable member of any team. At the same time, it also means that he might be seen as a bit of an oddball because his thinking is so different from the norm. But overall, it helps him form deeper connections with those who understand and appreciate his quirk.
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.
In 'The Healer of UA', Izuku's healing quirk is more complex. It requires him to concentrate and visualize the injury being healed. He can also transfer some of his own stamina to the injured to speed up the process. This makes his quirk not only about physical healing but also about his own sacrifice and determination.
His relationships with his friends would likely become more complex. If he starts using his time quirk to change things, his friends might not remember the original timeline, but Izuku would. This could create a sense of isolation for him as he holds memories that no one else does.
Izuku's character development in this fanfiction could be quite complex. With a dark matter quirk, he may initially be ostracized or feared by some due to the unknown and potentially dangerous nature of his power. This could lead to him feeling isolated, but it also might fuel his determination to prove that he can be a great hero. As he trains and explores his quirk, he would learn about its limits and potential. His moral compass could also be tested, for instance, if the dark matter has some unforeseen negative effects. Through these experiences, he would gradually transform from a somewhat naive boy into a more mature and self - assured hero, all while grappling with the implications of his unique quirk.
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.
First, focus on her insecurities. Despite having a powerful Titan Quirk, she might still doubt herself like the original Izuku. She could worry about losing control and hurting those she loves. Show her working hard to master her Quirk in private, constantly pushing her limits.
In a fanfiction, the development of Izuku having a black fire quirk can be really multi - faceted. First, the visual aspect of the quirk can be described in detail. The black fire could have a smoky, otherworldly look that sets it apart from normal fire. Emotionally, Izuku could struggle with the fact that his quirk is so different from what he expected. He might feel like an outcast among his peers. Then, there could be a story arc where he discovers a hidden power within the black fire quirk. For instance, he might find out that it can absorb other forms of energy. This would not only make his quirk more powerful but also open up new storylines about him learning to use this new aspect and facing new enemies who are interested in his unique ability.