ORV is classified as a manhwa. It has managed to create a devoted fan base due to its combination of exciting narrative and visually appealing graphics.
I'm not sure specifically as there could be many different 'Dokkaebi Night Novel'. It might be a story about dokkaebi, which are goblin - like creatures in Korean mythology. Maybe it's a horror or fantasy novel involving these supernatural beings at night.
I'm sorry, I don't know who the author of 'Dokkaebi Night Novel' is. There may be many relatively unknown novels with this name, or it could be a very specific work from a particular region or genre that I'm not familiar with.
ORV is a novel. It has a rich and elaborate narrative that is characteristic of the novel genre. There might be plans or fan-made webtoon versions, but the original and official form is a novel.
I haven't read a lot of this specific fanfiction, but generally, it might incorporate unique traits of each of the elements - dokkaebi, thatcher, and lemon. Maybe the dokkaebi's mysterious nature could be a central part of the story, with thatcher having some sort of role related to it, and the lemon could be used symbolically or as a part of the setting in an unexpected way.
The length of the ORV novel is substantial. It encompasses a rich and detailed story that unfolds over many pages. Different editions or translations might have slight variations in page count, but it's a substantial literary work.