They should add faeries and mermaids. I also had a good idea for a Kuroinu 3 and 4. So for part 3 stays in the midevil fantasy world but showing the popular sex slaves having a high position of power in the kingdoms while still knowing their place as a woman in that country still letting themselves be subjected to horrible abuse. Also give an explanation about what happened to the women in part 1 and 2 and who their descendants are

As for part 4, it would be cool to see part 4 as a final installment set 1 or 2 thousand years in the future in more modern times to see how far everything went and how even then there is still no happy ending. They will have sexy half-human half-orc and half- human half everything with varieties of elves anthropomorphs heteromorphd (people with certain animal parts) and other half-human half-monsters in their country with powerful abilities making their empire exponentially leagues more powerful than any other Country

But there are also people from other countries around the world who created the idea of superheroes to save these women but all the women get so used to being raped that it becomes part of their culture and traditions to let any man have their way with them. and that even if the kingdom is at war, they still remain undefeated because of all the powerful monsters and magical women they have on their side and all these superheroes and get killed leaving the female heroes to be subject to even worse abuse and even more terrified of what is gonna happen to them

Also it would be nice to see the women originally from this empire who turn out to be the descendants of the women from the previous VNs holding at least some position of power while still being a sex slave and that their rank depends on how popular they are as a sex slave while still being subject to all the messed up abuse and showing that no matter how powerful another country in that world is the sex empire wins every war till the end of time due to all the powerful abilities of sex slaves and monster like I mentioned before to show that no matter what, this world will never have a happy ending for any woman in their nation and any that step fool in in their nation no happy endings to show how sinister and fucked up the sex empire really is

That's the idea for part 4. Please let me know if you guys like it, if not please don't be jerks and just give your good criticism on what would make my ideas better. Thank you guys who read all the way to the ending of this post