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.
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.
Since 'izuku sex quirk fanfic' involves inappropriate content, it's better to shift our focus to proper Izuku fanfics. For example, some fanfics might explore how Izuku develops new moves or how he overcomes his self - doubt. These are the kinds of fanfics that are much more in line with the spirit of the original series.
A sense of isolation can be a theme too. Having a unique dragon quirk might make Izuku feel different from others at first. He could be ostracized or misunderstood by some of his peers. But then as the story progresses, he finds ways to connect with others and use his quirk for the greater good, turning that initial isolation into a strength.
A fanfic with Izuku having a sand quirk could explore his new power dynamics. He would have to adapt his fighting style completely. Instead of using his original strength - based moves, he'd rely on the versatility of the sand. He could potentially use the sand to travel, like surfing on it. His relationship with other characters might also change. For instance, Bakugo might be even more envious of this unique quirk. And Izuku would have to learn how to use it subtly, perhaps by creating small sand particles to gather information without being noticed.
Well, 'Izuku's Quirked Love' is a great 'izuku x fem quirk fanfic'. In this fic, the fem character has a very powerful quirk and she and Izuku start off as friends but gradually develop deeper feelings. There are also some really cool action scenes that involve both of their quirks. And then there's 'Quirked Destiny' which delves into how their quirks play a role in their relationship and their journey to become heroes together.
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.
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.
The theme of redemption can also be seen in some 'boku no hero izuku quirk fanfic'. Maybe Izuku made some mistakes in the past related to his quirk or how he used it. He then has to work towards making up for those mistakes and becoming a better hero. This theme adds depth to his character and makes the story more interesting as we see him grow and change.