I'm sorry, I haven't read this light novel in detail. But generally, 'isekai' novels often involve a character being transported to another world. Maybe in this one, the 'maou sama' becomes a 'yuusha' which is quite an interesting concept. It might have unique plot twists and character developments related to the transformation from a demon lord - like figure to a hero.
The 'isekai kara kita yuusha novel' likely tells a story full of fantasy elements. The hero coming from another world is a common trope in isekai stories. He could be summoned there by some magic or accident. Once in this new world, he may have to adapt to different cultures, magic systems, and races. His experiences would form the core of the story, which might include battles against powerful foes, exploring unknown lands, and uncovering the secrets of this new world.
Since I don't know the exact novel, I can't say for sure. But usually, there would be the hero who comes from another world. There might also be characters who help or oppose the hero in the new world.
Well, without having read 'boku ga yuusha de maou no boku de light novel', it's hard to say precisely. However, from the title, it seems to imply a story where the main character has a dual nature of a hero and a demon king. This could lead to all sorts of interesting plotlines, like internal struggles between good and evil within the character, or perhaps a story where the hero - demon king has to navigate a world that views these two identities as completely opposed.
Well, without having read the 'isekai de mofumofu novel' specifically, it could be a story that combines the popular isekai concept with some kind of mofumofu theme. It might be about a protagonist who gets sent to a magical other world and encounters all sorts of cuddly or endearing things there. For example, they could meet fluffy magical beasts or befriend cute little spirits in this new world.
I have no idea who the author of 'isekai de kojiin novel' is. There could be many authors writing in the isekai genre, and without more information, it's impossible to determine the specific author of this work.
I'm not sure specifically as 'isekai de kojiin novel' is not a widely known common title to me. It could potentially be about a character named Kojiin in an isekai (another world) setting, perhaps his adventures, growth, or relationships in that different world.
The 'isekai de tadahitori novel' could be a very unique take on the isekai concept. Since 'isekai' involves a character being transferred to a different realm, and 'tadahitori' suggesting solitude. It could be about a protagonist who is alone in this new world. They might start off lost and confused, gradually learning about the new world's rules, magic systems, or cultures. The story could explore themes like loneliness, survival, and the search for meaning in this strange new place. It might also involve the character developing their own power or skills in order to thrive in this solitary journey.
Since I don't have detailed knowledge of this 'maou to yuusha no tatakai no ura de novel', it could potentially explore the complex relationships between the characters in the fight between the devil king and the hero. Maybe it delves into their motives, their pasts that led them to this battle, and the hidden forces at work in this conflict.