Masculinity Lost

One strange day in the midst of the 20th century, a pink star lit up the night sky. From then on, the out-and-out Man has been a fading breed. The star's so-called 'gender-rays' disrupted the natural sex and sexuality of the human race, and some generations on the terms 'man' and 'male' are practically gone from the English language.

Nowadays, young boys grow up to be one of many things, developing rapidly upon the age of majority into:

1: Infertile, weak, cock-addicted and feminised Sissies,

2: Beautiful, hung Shemales or more anally sensitive Femmes,

3: Rare, eclectic and be-pussied Herms or Futanari,

4: Svelte, thick-assed and seductive Femboys,

Or 5: The exceptional few, the late bloomers, the Studs. Those who, resisting the temptations of their suddenly-hormonal bodies, manage to hold on long enough to undergo so-called Second Puberty, putting on kilos of muscle and cock, shooting up in height, and gaining a near-unassailable sexual dominance.

These members of the lately-coined Variable Sex (colloquially, vars) are tremendously sexually active, with, broadly speaking, practically nymphomaniacal libidos. Female sexuality has diverged from that of the timelines you are most familiar with, but it hasn't quite kept up— and so homosexuality is the practically universal norm among the Variable Sex. This, however, is dangerous to some.

Mysterious pheromonal fluids secreted by vars during sex have strange, mutagenic effects on other vars. Penetrating another var exposes a var to Testogen, an organic compound that fortifies and advances a var's masculine 'essences', a common abstraction for the extremely complex internal hormone balance that comes with being a member of the Variable Sex.

Conversely, being penetrated exposes a var to Estrone, a similar compound that quashes masculine essence. With sustained exposure to either, it is even possible to 'advance' or 'regress', altering one's sexual expression. While Herms and Futanari are effectively in a class of their own, spontaneously generated based on environmental factors, a sissy, through sustained Testogen exposure, may develop slowly into a more confident femboy, who may then grow into a beautiful femme, a strong shemale, and at last a truly dominant stud. Estrone effectively allows this process to occur in reverse, which, unfortunately, has resulted in almost half of the Variable Sex being sexually-tempted into sissydom or the half-measure of femboyhood, functionally unable to fulfill the reproductive role that men once did.

Women now primarily indulge sapphic tendencies for their primary romantic and reproductive partners, bearing children by and marrying femmes and shemales, though the pheromonally-gifted studs have no difficulty attracting lesbian attention. Sissies and femboys, incapable or disinclined to please women with their "male" organs, resort to roles as sexual accessories, providing oral and manual stimulation. Of course, most sissies and femboys are barely bisexual, their sensitive anal (and oral) passages and bulging, expanded prostates and lips providing great pleasure on penetration. This trait is shared with femmes, but not shemales, a relatively subtle distinction that nonetheless leads them to significant distinction within the sexual dynamics of the Variable Sex.

Furthermore, Estrone and Testogen are not only developed externally— while the greatest endocrinologists of this world have roughly sketched out the general drivers of internal compound production, it remains mostly a mystery as to how and how much exactly. Generally, submissive and receptive sexual expression leads to internal Estrone release, while dominant and penetrative expression stimulates Testogen. A strange quirk is that the female sex's involvement seems to intensify internal compounds, even when such is mediated through significant physical distance.

In effect, this world is one of sexual feast and famine, one where humanity's underlying sexual depravities have been driven to the surface by a monumental cataclysm of gender. Within it can be found various narratives... Unless you would like to first know more! The author enjoys over-writing the lore of their fetish story's setting.