In retrospect, it makes sense that the game doesn't necessarily expect you to read everything. I was so focussed on trying to get to know all about the characters that I didn't take into account that it would just be natural for Mokou to behave a certain way (i.e. go on with the story) after asking certain questions. Also, the mechanics you used for your previous game sound interesting, they make me want to check it out even more!
I can definitely see how Yakuza may have been an inspiration for you! Even though it's a crime series, it mostly revolves around the drama surrounding the characters. Some dialogue sections definitely gave me Yakuza vibes, in this sense.
Thank you for taking the time to reply!