The tension in the air was palpable.
Since the news had broken out about the Great Fusion Wave and its rapid spread across the world, people had been desperate to avoid it. But with no real information available on the exact nature of the wave, there was no way to know how to prevent its effects.
"Fusion shelters" were one of the many preventative measures that had sprung up in the three days since the wave began. The shelters were created by re-purposing existing buildings with improvised defenses, as there was no time for proper construction.
You had been lucky enough to secure a spot at a local motel that had been converted into a shelter. Lead sheets had been hastily applied to the walls of your dingy room and then coated with several layers of aluminum foil for good measure. Full-length mirrors had been placed in a square formation around you with the reflective sides pointed outwards. Apparently the people responsible for this shelter were trying their luck with all of the supposed solutions that were making their rounds on the internet.
Of course these shabby defenses didn't fill you with much confidence, but it had to be better than nothing.
The wall-mounted TV displayed a countdown to the expected arrival of the Fusion Wave.
One minute left.
You looked down at your body for what might be the last time.
Sure, you were nothing special, decidedly average for a twenty three year old guy, but you were fit and healthy and had all of your limbs. Hopefully you'd be able to say the same after the wave had passed over.
Thirty seconds.
You wondered if it would be preferable to keep your eyes open so you could observe the change in real time, or if it would be best to close them and let it be a surprise. As the clock ticked down your body made the decision for you, your eyes clenching shut and your hands balling into fists.
Five.
Four.
Three.
A flash of heat seared your entire body in an instant, and then quickly faded.
You blearily opened you eyes to find yourself in the same spot, still too dazed to fully assess your surroundings or the state of your body.
"I can't believe the experts were off by two seconds." you chuckled dryly to yourself, then paused.
Was there something wrong with your voice? Didn't that sound a bit too high? No, it seemed normal. But it also felt completely wrong.
You looked down at your hands. Small, pale, and feminine as you remembered. Nothing unusual. Wait, no. You were a guy!
Reaching desperately for one of the mirrors that surrounded you and spinning it around you quickly appraised your reflection.
The doe-eyed teenage girl staring back at you looked incredibly familiar, as if you'd seen her face every day. But of course, it was your face.
The long dark hair that fell down just past your shoulders, your delicate nose, the pale alabaster complexion of your skin, not a thing was out of place.
Wait, no, what were you thinking, the only part of your appearance that remained was the piercing green colour of your eyes. You'd never seen this girl in your life! This was already confusing...
Your petite and slender body was dressed in an elegant black pinafore dress over a short sleeved white blouse. You looked rather thin, even for a teenage girl, but your body still had some soft feminine padding were it counted, especially around your hips and thighs.
Speaking of your thighs, they were encased in a pair of grey and white striped stockings that gave your ensemble a subtly gothic appeal.
Seeing your reflection was causing a rush of strange and contradictory emotions. All at once, it seemed both familiar and completely wrong. Obviously most of your mind, er, most of the mind of your male self, was still completely intact. In fact it seemed to be by far the most dominant part of your new blended mind, but much of your teenage female self remained too, even if it was mostly in the background.
In almost direct contradiction of your mind's changes, your body almost completely resembled the girl that you had merged with. As far as you could tell, the only visible difference was your eyes, but something was bothering you underneath your clothes...
You hiked up your dress, revealing a prominent bulge in your cotton panties.
A wave of something resembling relief washed over you. At least it looked like you had managed to hold on to some of your maleness.
As you pulled your panties down to check in on your old friend however, you found yourself looking at something unfamiliar to both parts of your fused brain.
The anatomy placed between your legs was unmistakably female, but masculinized and swollen to a remarkable degree. A thick clit almost as long as your thumb poked from the hood of a meaty pendulous pussy dusted with a light coating of pubic stubble. Your massive puffy labia were swollen and heavy, with a distinctive heft to them. Most likely your feminine package would sway and wobble and rub against your thighs if you were to attempt to walk.
At a distance you could probably mistake your new genitals for a slightly below average penis and a pair of massive balls that clung closely to the body.
A knock on the door snapped you out of your impromptu asset inspection. It was probably someone from one of the medical crews assigned to check in on the fusion shelters after the wave had passed.
Sliding your panties back up over your bulging crotch-meat and pulling down the hem of your dress, you made your way over to the door.