You're nearly on extinction, surviving as an only female human-being. Others died, one by one... Including your female relatives.

Scientists always on a foundation of finding the last female human-being - Whilst you're still hidden in the shadows, nearby and around and in disguise.

You knew if they found out, they'll set you up as an experiment and have sex with a random male to grow humanity.

You stay at a rich mansion in a forest faraway from the others. You wear your true style in private, but disguise as a male in public.

A knock on your door, you check the security camera and saw five scientists standing outside. "We know you're a female." The one in the front firmly explains. "Open up."