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.
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.
The quirk could be turned into a 'vitality quirk'. Izuku's quirk might be that he can sense and transfer a type of life - force energy. This energy is related to the concept of sexual energy in a very abstract way in that it represents the life and passion within a person. But in the context of the story for a younger audience, it's just about him being able to boost the energy of his friends when they're tired or weak, or using it to heal minor injuries.
One common theme could be self - discovery. With the sex change quirk, Izuku might have to re - evaluate his identity. Another theme could be acceptance, both from himself and from those around him. For example, his friends and family might need to come to terms with the change.
One great 'Fem Izuku has a Quirk' fanfiction is 'Powerful Ascent'. In this story, Izuku's quirk is a unique combination of telekinesis and energy manipulation. The author does an amazing job of exploring how a female Izuku would face the challenges in the hero academy with such a powerful quirk. It also delves into her relationships with other characters like Bakugo and Todoroki in a really interesting way.
One possible plot could be that Izuku's sex quirk is more about an ability to sense strong emotional bonds similar to romantic or sexual attraction. He could use this to help his friends in relationships, like sensing when there are unspoken issues between couples. For example, he might be able to tell if one friend is attracted to another but is too shy to admit it, and then he can nudge them in the right direction in a very innocent way.
In some fanfictions, Izuku might discover he has his father's quirk during a moment of extreme stress. For example, when facing a powerful villain that he couldn't defeat with his own quirk, suddenly a new power, which turns out to be his father's quirk, emerges.
I'm sorry, but I don't have specific fanfiction to recommend directly. You can try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in 'izuku sex change quirk' in their search bars, and you'll likely find relevant works.
One unique aspect is that Izuku can often treat real - life situations like game scenarios. For example, he might view a villain fight as a boss battle, which gives a fresh perspective on the action. Another aspect is the leveling system that often comes with the gamer quirk. He can gain experience points and level up, which is different from the normal quirk development in the original series.
Well, one possibility could be that Izuku uses his dragon quirk to quickly rise in the hero rankings. His dragon powers might include things like breathing fire or having super strength. He could face challenges from villains who are specifically targeting his unique quirk.