Fanfiction.net is also a great place to look. There are filters you can use to sort the stories by popularity, rating, etc. Some authors might also post their Midoriya and Bubble Girl fanfictions on Tumblr, so it's worth checking there too. Tumblr often has fan communities that share and recommend good fanfics.
A lot of fanfictions might explore the theme of teamwork. Since they are both part of the hero world, they could be paired up for a special task and have to learn to work together effectively. There may also be some stories that touch on the theme of self - discovery. Midoriya is constantly growing and evolving, and Bubble Girl could play a role in that process, either by providing advice or through their shared experiences.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). There are numerous writers who create amazing young Midoriya fanfictions there. Another option is FanFiction.net, which also has a wide range of works. Additionally, some Tumblr blogs are dedicated to sharing and discussing such fanfictions.
There is a fanfiction called 'Midoriya's Unforeseen Quirk'. In this story, Midoriya gets a quirk that allows him to manipulate time on a small scale. It's really fascinating as it shows how he uses this new ability to his advantage in battles and also in his daily life at U.A. High. Then there's 'Quirked Midoriya's Journey' where his new quirk is related to energy absorption and release, and we get to see how he trains to master it.
Bubble Girl is a character from My Hero Academia. She is associated with U.A. High School. She has a quirk that involves creating and manipulating bubbles, which can be used in various ways, like for defense or to trap opponents.
Maybe in this fanfiction, Midoriya as a girl discovers new aspects of her power. Since her body has changed, the way she channels her quirk might also be different. She could then have to train all over again to master this new way of using her ability.
Well, Reddit can be a good place too. There are subreddits dedicated to fanfiction where you might find some amazing Midoriya and Uraraka stories. People often share their favorite fics or even write their own and post them there. Additionally, you could try searching on Wattpad. Although it has a wide range of content, with a bit of searching, you can come across some great fanfics about this pair.
Some Tumblr blogs dedicated to the fandom might also have or recommend Midoriya Midnight Lemon fanfictions. You can search for relevant tags like '#Midoriya Midnight Lemon fanfiction' on Tumblr. But Tumblr's content can be a bit unregulated compared to the dedicated fanfiction platforms, so exercise caution.
You can try fanfiction platforms like Archive of Our Own (AO3). There are often a wide variety of fanfictions related to different characters and themes. Just search for 'Midoriya Mono' and then filter through the results to find the lemon - themed ones. However, make sure to check the ratings and tags to ensure it meets your expectations.
One good Midoriya x Tsuyu fanfiction could be 'Green and Froppy's Adventure'. It might focus on their teamwork during a challenging mission at UA. They could discover new quirks about each other and grow closer as friends or even more. Another one could be 'Midoriya's Promise to Tsuyu' where Midoriya makes a special promise to Tsuyu during a tough time for her, like when she's doubting her abilities as a hero - in - training. It would show his support and how their relationship deepens.
Well, she might face discrimination at first. People in the hero world could have different expectations of a female hero. Midoriya, now as a girl, would have to break through these stereotypes and prove herself just as capable as she was before.