A good Ren x Masato fanfic often has well - developed characters. It should stay true to the personalities of Ren and Masato as they are in the original source material. This makes the relationship between them more believable.
You can often find Ren x Masato fanfics on popular fanfiction websites like Archive of Our Own (AO3). Just use the search function and type in 'Ren x Masato' to see a list of available stories.
Family - like bonds can be a theme too. Even if there's a romantic aspect, their relationship can also be depicted as a very strong family - like connection, with mutual support and care in different situations.
The students of Class 1 - A are often involved. For instance, Midoriya might be portrayed as being unjustly treated by Aizawa, and the fanfic could focus on Midoriya's struggle against Aizawa's supposed unfairness. Bakugo could also be in the story, maybe being in conflict with Aizawa's disciplinary actions.
Aizawa is still going strong in the manga. There's no event or storyline that has resulted in his death. The creators have chosen to keep him as an active character.
Aizawa may also interact with Izuku's family during family events or gatherings in the fanfic. He could be a guest and during that time, he could share his insights on Izuku's growth and development. This would not only strengthen his relationship with Izuku but also with his family as a whole.
Aizawa is known for his strict and somewhat reserved nature. This would have a significant impact on Izuku. Izuku, who is often eager and a bit impulsive, would learn to be more patient under Aizawa's guidance. Aizawa's ability to see the potential in his students despite their flaws would also make Izuku more confident in his own abilities. He would know that his father figure believes in him, and that would encourage him to keep pushing himself. Moreover, Aizawa's dry sense of humor might also influence Izuku's own sense of humor, making him a bit more sarcastic in a light - hearted way.
In the mainstream series, Aizawa is often seen as a tough but fair teacher. However, in the fanfiction, they might exaggerate his negative traits. For instance, his strictness in the original might be turned into extreme rigidity in the fanfiction, making him seem almost unapproachable and not at all understanding of students' difficulties.