Bro why not make simple harem and if player want to add or not specific girl they will do it themselves?
Every scene in the gallery is unlockable via gameplay. There are a few that are dependent on path selection though, so you might miss them because of that - for instance, you need two different playthroughs to unlock the Mary scenes as well as the Sarah scenes as you can't yet meet both of those on the same save, and there's another "A or B" choice on Sarah's path where you can either unlock a scene with just Sarah or a different scene with Sarah and Dawn.
That's basically what it is. You just need to open up those opportunities first, which will come at different times in the story based on choices you make.
They didn't call it in the first place, but instead relied on church founding for protection. So their either not trusting the police there is none in this town.
