You inconspicuously follow Emma to the men's restroom. She looks over to the door with the female symbol and then looks to you with a strange smile. "This is NOT my gender anymore." She gives the middle finger to the female symbol then points to the male symbol on the other door, nodding and looking me in the eye with a very serious expression. "THIS is my gender now, I hope you're satisfied." Her deep voice got a bit grim towards the end. You didn't know how to react, this was a bit weird.
You two go inside and you lock the door to make sure no one else would come in since you wanted a few minutes alone with Emma.
She goes in front of the mirror to examine her masculine reflection. She runs her hands over her brown buzz cut then feels her completely different facial features without blinking at all. Her eyes were a lovely sky blue and very seductive, now they are a dull and plain brown instead. Her long straight black hair now replaced by a rough and brown buzzed stubble with a receding forehead. Her pretty, slim, high cheekboned face, with her straight thin nose, now hidden under the somewhat plump man's face, with a wide bulbous nose, squared jaw and prominent brow. Her smooth light skintone traded for manly roughness and darker color. Her slim delicate body buried inside the body of a stocky guy. Her low cut tops and short skirts traded in for shirt and ties... You wonder what is going on in her head, she looks equally horrified and fascinated. Well it must be intense for her either way, to literally be someone else, become a new man... well in Emma's case it would just be "to become a man", not a "new man" but still you remind yourself this was just an elaborate and very convincing disguise.
Emma absent mindedly reaches to her neck and touches the tie and collar, biting her lip, thick fingers slowly caressing the crisp white collar and tight bulge of the perfect Windsor knot. She lets out a soft moan. Is she getting horny at seeing herself looking this way?
"Emma... what are you doing?" You ask as you step behind her and put your hands on her shoulders.
She turns her head to look at you only for a second then stares back into the mirror and resumes fixing her tie and collar with a creepy smile on her new face. "Nothing, just... don't you think this is amazing? I mean this morning I was a girl, I was the usual Emma... I combed my long hair, I put on a bra, I applied my makeup and... and then that package arrived with the disguise you ordered online and... I didn't really want to put it on, I saw it and it was way more weird than I imagined but I did put it on and... and here I am now as a man... I mean, look at me I'm a MAN now, isn't it amazing? Don't you think this is cool? I... I think I look so good in a tie, huhh not gonna lie I love it, because it makes me feel so masculine and not at all a woman, you know? So do you like my tie??"
"It's a good look, yes. Hey, come here and stop fooling around..." You turn Emma around and start running a finger slowly down her nice blue tie, going past her belt and stopping on the crotch of her jeans. You can clearly feel a bulge in there which is very un-ladylike. "...what do you have here, Emma? How far did you go with your transgender disguise, hmm? Are you wearing a fake dick or something? That's kinda over zealous if you ask me, I mean no one would even see you without pants, why would you even do this... "
She smiles perversely and pushes you against the tiled wall. The dominant attitude surprises you but you don't get a chance to comment since she grinds into you, sticking her tongue into your mouth in s forceful kiss.
You start making out and you were getting into it, decided to play along even if she was acting a bit weird. Emma kept grinding into you and as she got friskier she started slowly bucking her hips and grunting. Since she was thrusting her crotch against yours you felt quite intimately that the bulge in her jeans was getting gradually harder and bigger, it wasn't long before it felt like a very real, full on erection grinding against your own. You break the kiss and give her a quizzical look and she laughs. She takes your hand and puts it on her crotch. "Go ahead, feel it for yourself!" She tells you, defiantly. "How far did I go? I went ALL THE WAY and beyond... You go ahead and feel my cock and tell me if you call that fake... Let me tell you, it's just like the real thing, functionality and all!"
"No fucking way..." You mutter as you massage her warm throbbing erection through the open zipper.
"Haha! I had the same reaction this morning when I read the instruction manual that came with the suit... It's more than a disguise, this is a bio-mechanical exo-suit designed specifically to turn a woman into a fully functional male. Erection, sperm production, male orgasms with ejaculation, ability to impregnate, male libido, personality adjustments to make sure even the straightest girl, such as my former self, becomes a bisexual transman for as long as she wears this. Haha of course it's a good thing I read this stuff after I already put the exo-suit on, otherwise knowing myself I would have freaked out and would have refused to do it... a good thing indeed, it feels amazing to be a guy, feels like I was always a guy and now I finally look how I am supposed to. I know this is induced by the personality changes but honestly who the fuck cares, right? Haha."
You were shocked. "So you're trans now?" You ask meekly.
"Yes! At least as long as I'm inside the exo-suit, I am a bisexual transman, my name is Tyler and my pronouns are he/him!"
"Okay... well, what can I say, very... modern of you, uh Tyler."
"Thanks! So you're okay with this right?"
"...Can you remove the disguise now though? I'm sorry but when we're intimate I prefer you to be a woman..."