One popular 'izuku has sunshine' fanfiction might be 'Sunshine in His Heart'. It could show Izuku with a really positive and bright personality that spreads like sunshine among his friends. Another could be 'Izuku's Sunshine Days' which perhaps focuses on his daily life filled with sunny moments and his interactions with other characters in a really heart - warming way.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of fanfictions, and you can simply search for 'izuku has sunshine' in the search bar. Another option is FanFiction.net, which also has a lot of My Hero Academia fanfictions that might include what you're looking for.
In izuku sunshine quirk fanfiction, the theme of discovery is common. Izuku discovers new aspects of his quirk as he progresses. Also, the theme of acceptance is there. He has to get others to accept his rather unique quirk, and at the same time, he has to accept the responsibilities that come with it. The fanfictions may also touch on the theme of redemption, where Izuku uses his sunshine quirk to bring about positive change in characters who have gone astray.
One great 'izuku sunshine quirk fanfiction' is 'Sunshine's Ascent'. It shows Izuku with a sunshine - based quirk that he uses to brighten the darkest of days in the story. The author does a wonderful job of portraying Izuku's growth and how his unique quirk affects his relationships with other characters.
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.
In the original Izuku story, his development is more traditional in the context of the hero world. But in 'izuku has the gamer fanfiction', he has gamer - like aspects. So, instead of just training in a normal way, he might be leveling up or getting new skills based on a game - like system.
Well, Todoroki is frequently paired with Izuku in such fanfictions. Given Todoroki's own powerful quirk and his journey of self - discovery, he and Izuku with his voice quirk can have some great interactions. They might train together, and Izuku could use his voice quirk to help Todoroki better control his own quirk's temperature aspects. Momo is another one. As a smart and resourceful character, she could help Izuku understand the scientific aspects of his voice quirk, like how sound waves work and how to optimize his quirk usage. And of course, Iida. Iida's strict sense of justice and leadership could pair well with Izuku. He might encourage Izuku to use his voice quirk for the greater good and help him come up with strategies to use it in hero work.
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.
His classmates could be his allies. They might be intrigued by his Pokemon - quirk and offer to help him train or use it better. For instance, Ochaco could use her zero - gravity quirk to assist Izuku in some Pokemon - quirk - related training exercises.