I'm not entirely sure as I haven't read it specifically. But generally, it might be about the duties or tasks that students have to do after school in a fictional setting. It could involve things like club activities, part - time jobs, or special projects that they take on during their after - school hours.
I'm not sure specifically as there could be many different 'duty after school' stories. It might be about a student's responsibilities or tasks they have to do after school, like helping with cleaning the classroom, participating in club activities, or doing volunteer work.
The main characters in the 'duty after school novel' might include a student who is passionate about a particular after - school activity like painting or sports. There could also be a teacher who is guiding and mentoring the students in their after - school duties. And there might be a character who is new to the school and these after - school duties are their way of fitting in and getting to know the other students and the school culture better.
The Insomniacs After School manga has gained a significant following. It stands out for its fresh take on the subject matter and the way it connects with readers on an emotional level. However, like any manga, it has its critics, but the majority seem to enjoy it.