I just wanna say I love the game and atmosphere, however, the first character I went for was Siri (Sirius), and I was not happy with the poly relationship that was kind of put in your face at the far end of the game. You had to do Eleni's route to get the "good" ending. I wish there was a warning for the poly relationship twist at the ending since not everyone is comfortable with it. The whole story never mentioned the "partner" until the weekend story. Warning for people who are not comfortably with poly.
In a game where you're playing as the main character, in a genre where people frequently self-insert, yes, it makes sense to let people know ahead of time what kind of relationship it is. Most people are not poly and not everyone enjoys self-inserting as a person engaging in a poly relationship so it is perfectly fine to ask for information to avoid a route they won't enjoy.