Firstly I want to apologise if this looks like a wall of text, but I didn't want this to be half baked.
I was on a sea voyage with the in-laws, Captain Livernon and Lady Juno, and they were cajoling me about when I and Livrea will be giving them Grand kids. In what I thought was an excellent bit of in-law writing, they started musing about adoption or alchemy, as I am not one of those Wang wielding types.
Now this particular character was originally created expressly to establish what the non-pee pee possessed missed out on. The answer is quite a bit and especially in this case lots of wholesomeness. For despite what a certain group say, no not all the Girls in this game are Dick-Girls.
In Fact I think Brint is the only Marrying material that can knock you up [ No what ever you have with Kas is definitely not a marriage and those are very much not special kids]
Versus marriage/special kid list
Ahmri
Alieh [Freja]
Atani [Child]
Brienne
Livrea [Child]
Rindo
Yes I have excluded Kiyoko as she is a very special case [ a bit of Magi-cock + divine intervention, which I will return to shortly].
As you can see that a fair bit of parks and ice-cream etc to miss out on
So what am I proposing? A consumable that temporarily sets some one with a ghost light cock's virility to not 0. How long? probably until the next impregnation check or 24 hours which ever is soonest. Possibly followed by Enervation.
Where would you obtain it? it should not be easy or immediately available [delayed gratification is the best gratification] and if we follow the model above should require the divine or divine adjacent. I propose 2 routes
Lumia in her light palace
Kasyrra in her dream palace
This firmly kicks it into Act 2. I feel that they should in both cases be locked behind rap-battles, Lumia worried about the precedent and Kas about weakening that precious soul. They should be considered precious, this is not meant to create cricket scores of kids . So one per slot and and only one in your inventory, having one from the other source should provoke a polite rebuke and decline to provide, The item should be un-sellable and a cool down of a week seams reasonable.
Hopefully this emotionally invests the player slightly more as they effectively have a mini-quest to
overcome biology.