itch.io

I think you have a typo in your title. 

It's tagged otome.

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. 

Is it inspired by the same Yahoo Answers question from 2010 though?

Wow, this demo was so gripping! And the action scenes were really well-written and engaging! I like the MC too and love how proactive she is. I didn't want to spoil myself with the sneak peeks but I'm so excited to read more and get answers to the mystery!