Is there a more detailed guide somewhere? I tried following the one the game links, but still missed optional girls. Things the guide said were supposed to happen just didn't, making me think I missed steps the guide doesn't tell you about.
I've been going over the walkthrough again over the past few months in an attempt to implement it directly into the game itself and found a few inconsistencies, especially as some things get changed and updated over time.
Still, if you remember or find any examples in particular, feel free to share them so I can try to fix it. Like what side girl or steps it missed.