Hey so I was thinking about playing this but I saw you also have "All Idleness and Ephemera", which I think its about these same characters. Which one could be categorized as the "main" one or the one that I should play first?
UIL and Idleness both share the same main characters, yes, but they're set in different universes and the two stories are unrelated. You don't need to read one to understand the other. Idleness is mostly sex-focused and has very little plot, whereas UIL is a more standard slowburn romance story with a bigger focus on cute character interactions. Which order you want to read them in doesn't really matter.