I'm sorry, but I don't have any information about the main characters in this light novel. Without reading it or having more details, it's impossible to say who the main characters might be.
As I have not read the 'iya na kao sare nagara light novel', I cannot determine who the main characters are. It could be a young person on a journey of self - exploration, or it could be a story centered around a family with complex relationships. We really need more information about this light novel to accurately identify the main characters.
I'm not entirely sure as I haven't read this specific light novel. It could be about various things like a complex relationship where the characters have some sort of uncomfortable or strange interactions as 'iya na kao sare nagara' might imply something like 'while being made to show an unpleasant face'. But this is just speculation without more context.
The main characters are Kotoko Aihara and Naoki Irie. Kotoko is a bit of a clumsy but very determined girl, while Naoki is the smart and initially cold - hearted guy.
I'm sorry I don't know specifically. But typically in such a story about mononoke, there would be a protagonist who has some sort of special ability to deal with them. There might also be side characters like friends or mentors who help the main character on their journey.
There are several key characters in the 'sakurasou no pet na kanojo light novel'. Sorata Kanda is one of the central figures. He has his own dreams and problems, and he is constantly dealing with the chaos and fun in Sakurasou. Mashiro Shiina is another main character. She is a very talented but also a bit of an odd girl, which is why she is somewhat like a 'pet' in the story. Then there are Misaki Kamiigusa, a very energetic and creative girl, and Jin Mitaka, who has his own story and relationships within the dormitory.
Since I haven't read it, I can't say for sure. But based on the title, the main characters are likely to be the 'oroka na tenshi' (the naive angel) and the 'akuma' (the devil).
The Almajiri boys themselves are likely to be main characters. They are at the center of the story as it is about them. They might have different personalities, some being more rebellious, while others are more traditional in their ways.
I don't know the main characters in this 'nitto no taida na isekai novel' as I haven't read it. There could be a young hero or heroine who is the central figure in the story.
I'm not sure specifically as there could be many different stories within light novels titled this way. It could potentially be about a character's dislike of pain or some sort of situation where discomfort is a central theme.
Since I don't have detailed information on 'tenseishichatta yo iya gomen light novel', it's difficult to say precisely. It might be set in a unique world with its own set of rules and characters. Maybe it involves a character who has made a mistake (iya gomen could imply regret) and is now in a tense situation (tenseishichatta yo).
I'm not entirely sure specifically as it could be a relatively unknown or niche light novel. It might be about a character who experiences something they dislike or find painful, given the 'itai no wa iya' part which could roughly translate to 'because pain is unpleasant' in a very loose sense. But without more context or having read it, it's hard to say for sure.