I agree.. sometimes, I feel there is too much "Visual Novel" progress thus far; Hopefully, the next update gives us the "Sandbox" feel!...
I think there was an event with Alice ... that there was only one week when this could be accomplished before other events make that impossible, which is just dumb design for a porn game
instead a key event could be put in, and be very clear in description of said event that there is no way back, so you could loop through all starter (or any other "chapter") for virtual months exploring all possibilities
...
Fret not! the upcoming update of WalkThrough Mod has got you covered on information.. stay tuned~