One way is to look at the source. If it comes from scientific research papers, experiments, and data, it's emission science. If it's from a fictional story, movie, or unproven hypothesis in a science - fiction context, it's likely science fiction.
I'm not sure specifically what the 'emission secret story' is without more context. It could be about emissions in an environmental sense, like carbon emissions and some hidden facts or events related to it. Or it could be about emissions in a scientific or industrial process with a secret aspect.
Well, the characters in emission science fiction usually play a crucial role. They could be scientists trying to understand and manipulate emissions for various reasons, such as powering spaceships or terraforming planets. The concept of emissions can also lead to new forms of energy sources in these stories, which is a very interesting aspect. For example, some emissions might be harnessed as a super - efficient power source. And then, the conflict often arises when there are different views on how to deal with emissions, just like in our real - world discussions on environmental issues.
I'm not sure specifically what the 'idille emission secret story' is as it's not a commonly known term. It could be something very specific to a certain group, project, or personal account.
I don't think so. There haven't been any official announcements or indications that the HxH manga will continue. But you never know, maybe there'll be a surprise in the future.