Alright I understand it might be hard to understand so I'll make my ideas into points to make it easier to get a grasp of it
1. The game starts off with you managing a town from an up top kind of view like in sims 4 and you move around install building and recreational activites to attract people to your town
2. As your town gets populated with people they interact with each other and start dating and vice versa
3. As the decision maker you can approve marriage as a whole concept not just the couple so other people in the city will not constantly come to you for approval once the idea is approved it becomes legal in a sense for the whole town
4. As the couple live their life a third person can come along and commit infidelity both netorare or netori but they'll come to you for approval to legalize ntr making the game vanilla or ntr is up to the user
5. Other fetishes will also need approval for example exhibitionist,voyeur,golden shower,femdom,incest and such if your trying to capture all the fetishes then you could add extreme fetishes as a option before starting the playthrough
6. Extreme fetishes could include golden shower,stalking of couples, kidnapping,choking,and maybe the hard r (I don't know if that word is allowed)
7. As for the gameplay of the game as you continue approving ideas and fetishes people mood will continually shift
8. To fix the mood you could add new building or activites to your town which could also play into ntr and other prospects such as sauna,hotels,cafes or gyms
9. In my opinion every decision like approving bbc or pornographic filming of married couple approving such things and watching them play out could be quite the turn on
(This is all the points I've thought off so far feel free to add to it or make remarks or ask questions of parts that may seem confusing)
