In case anyone is curious, this is Dwarf Fortress with the Suika Fortress mod. I forgot to assign the Alices to teams, so this all ended with all the Alices (except one) and Reimu dead. Then I gave the remaining Alice to some giant brown recluse spiders. Didn't think it was that big of a deal.
Interesting. I also independantly added yukkuris to my personal mod. Do you know how Suika Fortress handles the yukkuri reproduction thing? Since the DF engine doesn't support double or non-gendered creatures?
Did you consider using the stories role to define genders? Like Marisas and Alices being Male and Reimus and Patchoulis being female? I think that's the best thing you can do.
The DF engine doesn't support that either. You can only assign one sprite per job per creature. In order to have Male Marisas and Alices and Female Reimus and Patchoulis in the same creature, they'd all have to have the same sprite, which defeats the purpose of having yukkuris.
And if you make them four different creatures of differing genders they won't reproduce with each other. :(