I'm not sure as there are many novels that could potentially have 'duty and honor' in their themes. However, typically, there could be a noble - hearted protagonist who is deeply committed to his or her duty and has a strong sense of honor. Maybe a knight or a police officer type of character.
The main theme could be about the importance of fulfilling one's duties and upholding honor. In many such novels, characters are often faced with moral dilemmas where they have to choose between personal desires and their duties, and their sense of honor guides their actions.
Since I haven't read 'on my honor novel', I can't say for sure who the main characters are. But usually, main characters are the ones that the plot revolves around. They are often involved in the major conflicts and developments in the story. They could be people with different views on honor, like one character who is very strict about upholding honor and another who is more lax or perhaps even challenges the traditional notions of honor in the context of the novel.
There is a character named Alex who is a brave warrior. He is always at the forefront of battles, fighting for his clan's honor.
I don't know for sure since I haven't read it. But I assume the main character would be the 'honor girl' herself. There might also be other supporting characters like her friends, family members, or perhaps a mentor figure who helps her in her journey related to honor.
I'm not sure specifically who the main characters are without reading it. But they are likely to be the Medal of Honor recipients whose stories are being told.
I'm not certain, but Honor Harrington is likely to be one of the main characters.
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.
As I don't know the 'game of honor story' well, I can't say for sure who the main characters are. It could be a group of warriors who value honor highly.
There are likely soldiers and operatives as main characters. They are probably the ones involved in the black ops missions.