Hey there. So i saw that coment about following progression, so got the an idea.
Could pals add something like a hunter diary from Monster hunter. U see those parts of the monster where u can see which are the most vulnerable depending on the weapon and with respect to each zone u ar attacking.
So here could do something like that. While most time the player spent with one girl, could archive New discoveries like: Zone: x = sensitive/meh/doesn't like it - *silly note about the girl*.
And these can be an excuz to add a New craft for this diary.
Thats all. Good luck on the project pals ✌️