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.
There are several options. Some people find ORV manhwa on dedicated manga and manhwa websites. Another way is to check if your local library has digital access to it.
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.
Well, without having read it in full detail, it's likely that the 'orv side story' serves to fill in the gaps left by the main story. It could introduce new sub - plots that are related to the overarching plot but not fully explored in the mainline. Maybe it focuses on the relationships between characters that were only hinted at in the original. It could also be a way to explore different 'what - if' scenarios within the context of the 'Omniscient Reader's Viewpoint' universe, such as what would have happened if a certain character had made a different choice at a crucial moment.
I'm not entirely sure as 'orv' could stand for many things. It might be a very specific or niche online novel. Maybe it's about a unique fictional world, with interesting characters and a complex plot.
Yes, it can be a bit difficult. The story has complex world - building and a large cast of characters. But if you start slowly and make a note of the important details, it gets easier.