I'm not very familiar with this light novel specifically. But generally, a light novel often features unique characters and a fictional story world. It might be about some kind of adventure or relationship in a setting where there's a'maou' (demon king) involved. Maybe it's about the interactions that take place on a certain 'floor' within this fictional universe.
I'm not entirely sure as I haven't read this specific light novel. But generally, a light novel often involves unique characters, a fictional world, and a story with various themes such as adventure, friendship or self - discovery. Maybe it's about the journey of Aoi Hikaru on Earth.
You can try checking major online book retailers like Amazon. They usually have a wide range of light novels available, including some relatively niche ones.
I'm not entirely sure as I haven't played this visual novel specifically. But generally, a visual novel with a title like this might be about a story where there is a sister figure in a particular situation within the narrative world of the game.
Hiroya Oku likely starts with a concept or story idea. Then, he sketches out the characters and plotlines. After that, he refines the details and adds depth to the story through continuous revisions.
You might try looking for it in local bookstores that carry a selection of light novels. Some large chain bookstores often have a section dedicated to Japanese - style light novels.
You can try looking for it on popular visual novel platforms. Some well - known ones include Steam, which has a wide range of visual novels available. You might also check out specialized visual novel stores or websites that focus on Japanese - style games.