You interact with the sign next to Rika's Room.
Here are the steps:
Have Gwen and Emma at lvl 4.
Fix the memory in Gwen's mind.
Control Emma while Gwen is in the shop on Sunday afternoon, and Emma is the one running the shop.
Select "Introduce Gwen".
Use the running shoes in your key items to move faster
Lily and Emma can be
Aiming for before 2025
You can get main girls pregnant. If you do, you will see them visibly pregnant in the epilogue.
Do you have a devlog of the MODs you put in?
While I know you probably can't change the art at all, could you put some sound effects in, and/or add more varied music, it can be very droning to listen to the same slow, yet short song over the course of a couple minutes. Also adding more varied names for the harem that aren't just the player name or master, for example having both the married women address the player with marital titles and such. It would also be nice if you could add some more varied costumes if possible, as I've kind of grown bored of the base games costumes.
This suggestion is a bit ambitious, but why not make it so that the player takes over the entire village, and has visible show of it. Such as him practically becoming the king of the village, and use the materials to expand the mansion to encroach on the village into a small keep of sorts. With the women that the player can breed having the option to be decided when and where they are fucked by the player, and what they wear. And the men and not as breedable women mindlessly serving to maintain the village's laws that the player can decide on through his control over the village.