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 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.
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.
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.
A common theme is their shared work environment. Since they both are part of the U.A. High School faculty, many fanfictions explore how they deal with the daily chaos of teaching and protecting the students. Another theme could be their contrasting personalities. Nezu is very intelligent and calm, while Present Mic is more energetic and outgoing. Fanfictions often play with how these different personalities interact and complement each other.
Some fanfictions also explore the idea of a romantic relationship between them. They might show how their friendship could potentially develop into love over time, with themes like hidden feelings and the discovery of new emotions for each other.
A present mic fanfiction could focus on his relationships with other heroes. He seems like a really friendly and outgoing guy, so it could be about his adventures with Eraserhead. They could be solving a mystery together in a noisy city, with Present Mic using his voice to disrupt villains while Eraserhead takes them out.
A theme could also be his heroic deeds. Fanfictions could be written about him saving a large group of people from a powerful villain using his sonic powers in creative ways, like creating a sonic shield to protect them or using his voice to confuse the villain into making mistakes.
One common theme is friendship. They are colleagues in the My Hero Academia universe, and many fanfictions explore the deepening of their friendship, like how they support each other through tough times at work or in battles.