I don't know the main characters in this light novel as I haven't read it. Maybe there is a character named Rei who is central to the story.
Well, without having read the 'rei's sanctuary light novel', it's difficult to say exactly. However, in many light novels, the plot often involves character development. So perhaps in this one, the characters grow and change as they interact with the sanctuary. There might be elements of friendship, love, or rivalry among the characters as they face challenges related to the sanctuary.
The protagonist is Godou Kusanagi. He is a normal high school student who gets thrust into the world of the 'Campiones' and has to adapt to his new powers and responsibilities.
I don't have information about the specific main characters in this light novel as I haven't read it. But they could be people who are directly involved with the city's sanctuary - related matters, like a protector of the city or a refugee seeking shelter there.
Main characters could include those who are directly involved in maintaining the sanctuary, such as caretakers. They might be dealing with the physical and metaphorical 'dust' that accumulates in the sanctuary. And there could be a character with a special gift or ability, a bit like a beacon of 'light', who has the potential to save the sanctuary from an impending threat.
I'm not sure exactly as I haven't read it. But typically in a novel series, there would be a central character. It could be a hero or heroine who has to face various challenges. There might also be a sidekick or mentor figure to help them along the way.
I don't really know as I haven't read the book. But it could be a young hero with special powers, a wise old wizard who guides the hero, or a strong female warrior.
Since we don't have much information about this 'sanctuary graphic novel', it's difficult to determine the main characters. They might include a hero figure who discovers the sanctuary and decides to safeguard it. There could also be antagonists who pose a threat to the sanctuary's existence. Or perhaps there are a group of survivors who make the sanctuary their home and have to face various challenges together.
Some of the main characters include Keiichi Maebara. He is an important figure in the story, often at the center of the strange events in the village. Rena Ryuuguu is also a main character, with her own complex personality and role in the unfolding mysteries.
Since I don't know the specific 'Sanctuary School Story', it could be the students who are seeking sanctuary at the school. They would be the main characters as the story might focus on their experiences and how the school helps them.
I'm not sure exactly as I haven't read the specific 'the sanctuary of school story' in detail. But it could be students who are likely to be main characters as they are the ones who experience the school as a sanctuary.