Eh, I think nyotai-ka was more like Aohige's dinner as he describe
here. 女体化 = lit. female body change (into)
With the term futa, I tend to view them as originally female. I don't really hate it as a genre, but I'm rather sick with how often futa pictures comes grotesquely disproportionate (like fanaticfetish, but I guess this one is more likable).
Speaking about futa, how many of you know "sounding"?