I'm not entirely sure as 'eidolon novel' could be a very specific or even self - created term. It might be a novel that focuses on eidolons, which could be spirits, apparitions or some sort of fictional entities in the story's world.
Well, it could be a story where the eidolons are spirits from another dimension. The game's story might center around a young hero who has the ability to communicate with these eidolons. This hero is tasked with preventing an evil force from using the eidolons to destroy the world. So, the hero travels across different landscapes, from dark forests to ancient ruins, in search of a way to stop the evil plot and save both the eidolons and the human world.
I'm not sure exactly. It depends on how you define a story within The Shard. Maybe you could look for a detailed index or summary to get a precise count.
In 'A Shard of Glass' short story, it might be about a single shard of glass which could symbolize many things. It could be a broken piece of a past, like a broken relationship or a shattered dream. For example, if the story is set in a post - apocalyptic world, the shard of glass could be a remnant of a once - great civilization's architecture, representing the loss and fragmentation of society.