Who could be the main characters in a composition classroom fanfic?

Well, a lot of things really. Maybe a plot where the students compete in a writing contest within the classroom setting. Or perhaps a scenario where the classroom itself has some sort of magical or special property that affects the writing process. Another possibility is creating a story about the relationships between the students and how they develop through their writing experiences in the composition classroom.

The children of Nagisa and Kayano could be main characters. They might inherit some of their parents' skills and quirks. For example, Nagisa's son could have his father's stealthy nature.

Ayanokoji could be one of the main characters. He's very intelligent and mysterious, and he might fall in love with a female character like Horikita, who is also smart and strong - willed.

Koro - sensei would likely be one of the main characters. His unique abilities and his role as the target of assassination in the original 'assasination classroom' would also be important in the infinite loops scenario.

I'm not sure exactly, but probably there are students who are the main heroes.

A new transfer student from a foreign assassin school. This character could bring in different assassination techniques and a different cultural perspective on dealing with Koro - sensei. They might be more ruthless or have a unique code of ethics.

Since it's about the elite of the classroom, the main characters are probably the students who stand out academically. They could include the top - ranked students in different subjects. There might also be a teacher or two who play important roles in guiding or challenging these elite students. Maybe there's a student who has a special talent that makes them part of this elite group, like a prodigy in math or a brilliant writer.

Ayanokoji Kiyotaka is one of the main characters. He is a very intelligent and mysterious student who often hides his true abilities. Then there is Horikita Suzune, a girl who is determined to rise to the top in the classroom hierarchy through her own efforts.

Since I haven't read the 'elite classroom light novel', I can only guess. There could be a protagonist who is a very talented but overlooked student at first. Then there may be a group of popular and influential students who form like a clique in the elite classroom. And perhaps there is a teacher figure who has a big impact on the students' lives, either as a mentor or a source of conflict.

I'm not entirely sure who all the main characters are, but there must be some students who are the central focus. Maybe there's a character who is initially underestimated but turns out to have great potential.