>>10849374In some of my horny scenarios I've imagined a world in which futanari arise in societies where selection pressure is relatively low for several generations. The exact reason is up for speculation, but scientists in world note certain genes active in futa that, while not apparently directly related to reproduction, are only expressed in futa. They can also arise at random, but much less commonly (like someone being born with an extra digit).
In my world they would normally have a high libido while being infertile, and would be subject to cultural interpretation and acceptance that would vary heavily by the society and their state of technological development. For example, libido reduction medicine would be something that career-bound futa might get (they have a warranted stereotype of being dumb-horny) in a developed society, in other places they may be pressured into becoming a sex worker, and in other places make up an administrative class like eunuchs.
