Tim loves being a Marine, especially given his position in a top secret unit operating on the fringes of the known military. While much of Tim's days are exactly what you'd expect from someone in his position, there's also the rigorous psychological and genetic testing that sets Tim apart.
The most recent test shows Tim a series of male and female faces as they transition into one another, and Tim passes with flying colors. Now, he's on the cutting edge of espionage, taking a pill that transforms him into a beautiful woman.
Suddenly, it's up to Tim to test this research in the field, ambushing a nearby troop with a heavy dose of seduction.
This erotica short story is 4,600 words, featuring a hardcore male-to-female gender swap group encounter.