This game really needs to be animated for all the characters and scenes, including sex scenes. Also expands A LOT MORE OF SEX SCENES. This is very great and it has a great potential to expand by a lot. Add pregnancy as a full mechanic too, so that 3 of them can get pregnant and give births over and over again.
Even though I kinda don't have a great idea what to do with the babies. There are no hospital and government in which you might exchange the babies for compensation to either of them. I have some really messed up evil thoughts though,
1. Give the babies to the wolves for their foods (as gifts, tributes, sacrifices, whatever you wanna call that. So that the wolves won't attack MC and the girls for certain days).
2. Maybe add tribe people in that temple island. You can exchange items and the babies for something, or if they are evil, you can give them items or the babies, so that these people won't attack for certain days.
3. Throw the babies into the sea.