This is probably a longshot, but my idea for Nafisa is to show a sequence where she turns a human man into a belly button ring (just a *poof* transformation would be fine),and then is shown wearing said ring on her person.

I know that's more elaborate than most requests, so it's unlikely to get filled, but I think it's more fitting her character than just a drawing of her getting fucked*

*not that I wouldn't be happy with that