You can find them on Archive of Our Own (AO3). It has a large collection of fanfictions related to various fandoms, including ones about aizawa shouta and present mic.
One possible plot could be that Aizawa and Present Mic are best friends, and Ms. Joke has a huge crush on Aizawa. Present Mic tries to play matchmaker, getting Ms. Joke and Aizawa into various situations together. Maybe they all end up working on a special project at UA together, and during that time, Aizawa starts to see Ms. Joke in a different light.
Love and support is also a big theme. Some fics take their relationship to a romantic level, showing how they love and support each other through thick and thin. They might comfort each other after a tough battle or just be there for each other during a bad day.
There's 'Midnight Whispers' which is a more action - packed fanfic where aizawa shouta and present mic team up against a new villain while also exploring their feelings for each other. It's full of exciting scenes and emotional moments.
There's also 'Mic and Aizawa: Unseen Bonds'. In this fic, the author focuses on how they support each other during difficult times at UA. It shows their friendship evolving into something deeper and more profound, with a lot of heart - warming scenes.
Maybe an anti - hero type of character who believes that the way Aizawa, Ms. Joke, and Present Mic teach and operate is wrong. This character thinks that their methods are too soft or too strict respectively. So, they try to undermine their efforts at every turn, from interfering with their classes to trying to turn the students against them.
It could be All For One. He's a powerful and menacing villain in the My Hero Academia universe. Since Kurogiri is saving Deku, All For One might be trying to target Deku for his own purposes, like stealing his quirk or using him as a pawn in his grand scheme to take over the hero society.
Another good place is FanFiction.net. It's been around for a long time and has a significant amount of My Hero Academia content. When searching for Kurogiri fanfiction, be sure to read the summaries and reviews to get an idea of the quality and content of the story. Some stories might focus on his backstory, while others could explore his relationships with other characters in the series.
Well, it could be about Izuku confronting Aizawa over some misrepresentation in the fanfiction. Maybe Izuku doesn't like how Aizawa is being portrayed as too strict or unfair in the fic.