Last Female of Eden

In a world where women went extinct, you are the last one... and you must hide it to survive.

///

You were transmigrated to a world of magic and fantasy where all of society is composed of demi-humans.

In that world, women (or females) were naturally weak; they went extinct a long time ago, having been reduced to sexual objects and coerced by multiple males.

Currently, only males exist, and males with feminine appearances are highly valued as partners. To prevent a repeat of what led to the extinction of women, these males with feminine appearances (femboys) are protected by the Federation and can only enter into consensual romantic and/or sexual relationships.

Now you have transmigrated to this place as a demi-human; you are the only woman in a world of males, and to survive, you must hide it.

Your 'feminine' appearance has made you highly sought after as a partner. You have a system that helps you keep your gender a secret and provides you with benefits.