Any hentia that would be considered the opposite of futa?

So guys with pussies?

lol, good question but ive never seen nothing about that, i like some futas but a opposite futa? like two mans with va*** idk

I don't know about that... you could always try some trap/crossdressing hentai. Its kind of opposite of futa.

I guess the literal opposite of a girl with a dick would be a guy with a snatch, but I have never read any doujins where a guy has ladyparts. The closest thing I can think of would be genderbender hentai where a guy turns into a girl.

Buck Angel. Google the name.

Maybe try reading Dolce Report by BehindMoon. I just remembered about it, it's about a guy that gets turned into a girl and gains boobs/pussy but still has a dick. Some of the stuff in later chapters are a bit weird though, just to warn you in case you decide to read it.

Try TSF_Monogatari

Futa is something with both sexual organs, so will be just a men with pussy and a penis

Well, if Futa is both gender, the opposite is no gender at all.
Sadly this must be too boring to deserve a hentai.