“God,” Cedar sighed in resignation, looking at himself in the mirror. He eyed himself from every and any angle, trying to make himself look taller, buffer, and more masculine. His wardrobe was all suits or casual tees or work pants, also stuffed with binders now going unused after his top surgery. He threw out all his jewelry, got a handsome haircut from the barbershop, and tried to present himself in the most confident way possible.
         It was his height.
         Cedar wasn’t exactly religious, but a part of him blamed whatever powers reigned above. Why did he have to start puberty so young? Why was his growth stunted in elementary school? Why would they do this to him, and not his older cisgender brother? He stood at about five feet, give or take. Platform boots only added an extra three inches at most, which still put him below average for even cis women. Anything else would be uncomfortable. The fact he couldn’t afford hormones with his godawful insurance didn’t help.
         It made his heart hurt. It was hard to take himself seriously as a guy, and as a Dom.
         His girlfriend, Sasha, always told him not to worry about what other people thought. That he was the most handsome boyfriend she could have ever asked for. And that she loved being in his control. Under him, on top of her.
Unfortunately, Sasha had the same problem – for the opposite reason. Sasha was also trans, but at six foot four, she towered over most of their friends. And it didn’t feel great. Luckily, it wasn’t like she was surrounded by people who saw her any differently. It was herself that was judging the hardest. Cedar and Sasha were in the same boat. It didn’t help that at kink conventions, people would always assume Sasha was the Domme.
“Ha,” Cedar laughed every time. “Sasha, the top? Sasha, whose first message to me was a long keysmash after I flirted with her on a dating app? Please.” And yet, people would always assume that. It infuriated Cedar. In a bad way.
Unfortunately, there wasn’t much either of them could do. At least, that was what Cedar thought until Sasha came home one day. There was a wide smile plastered on her face, more excited than usual. “Babe, look at this!” she called Cedar into the living room. Cedar jolted out of his thoughts and followed his girlfriend’s voice. She shoved a piece of paper in Cedar’s hands.
Cedar raised an eyebrow. “A medical study? For pre-HRT trans people?”
“Yeah! I even asked the person who gave it to me about it. They’re trying new forms of HRT – and if we qualify, they’ll give it to us for free!” Sasha’s face was beaming with excitement, for both of them. Cedar skimmed over the study. It promised free hormones for a year and $250 a week for each week taking the hormones.
Cedar had to rub his eyes to make sure he was seeing correctly. “This seems… too good to be real.”
“You think so?” Sasha pouted. “There’s an email at the bottom – it’s from that Ivy League school in the city. The one with the well-known medical program. This has to be promising!” She seemed very insistent on this, Cedar thought. But it made sense. Free hormones, and getting paid to take them? It sounded like a dream come true. A win-win.
But he still hesitated.
“I… guess we can send them an email,” Cedar suggested. “Just to do the intake for now, right?”
Just to do the intake, they promised. That’s all they promised to do, right now.
~~ 
        The trial went much better than either of them expected. It was their first week on the trial, and both Cedar and Sasha felt *excellent.*
At first, both of them were skeptical about HRT in general. Both of them felt it was "too late to start" despite most of their friends having started older than them -- and looking quite handsome or beautiful respectively. They were worried about not getting the "right" effects, or being handed a rough hand with acne, emotional imbalance, or fat redistributions. But they both looked -- and felt -- amazing.
Both of them glowed with confidence, both alone, around each other, and around their friends. Sasha's chest grew far more rapidly than she expected, something that was a source of euphoria to her. Cedar, on the other hand, was worried about getting a goatee or porn stache, but the facial hair around his face looked stellar. He felt like a king. Cedar barely even noticed that his facial hair growth happened far quicker than any other transmasc person on HRT experienced.
But both of them noticed something weird, one day: they were reaching the same height as each other.
For the couple, height was the biggest source of dysphoria. So the height changes weren't exactly unwelcome. That said, it raised questions for their friend circle and themselves as Cedar grew a couple inches in the first week, and as Sasha shrunk a couple. At the end of the week, they about met eye contact with each other simply standing. Sasha was barely half an inch taller than Cedar.
Not that either of them were complaining.
In fact, most of their friends were trying to get on the trial themselves; sadly, registration had closed right after Cedar and Sasha signed up. They were definitely grateful for that - if HRT *could* redo their heights, then, they wouldn't question the science behind it. No need to look a gift horse in the mouth.
There was another change, something far more in line with traditional HRT: they were both very, very, very horny. All the time.
Sex had already been an every other day or every three days thing. But these days, they were having sex at least once a day, if not twice or thrice. Once again, not a change they complained about -- actually, the effects of HRT made sex even more pleasurable than before. Most of their passion was driven by their D/s dynamic. Slowly, that dynamic stopped mattering quite as much as just getting their hands on and in each other.
Eventually, as soon as they would come home, they would pounce on one another and drag each other over to the bed. It was a good thing they didn't have to work, as the study paid them such a generous amount; they couldn't think about working while being this horny for one another. God, they were so hot for each other. Like two puzzle pieces that fit *perfectly*. They tried new positions, new kinks, new roleplays, and even new depths.
But, about another week in, both of them noticed some weird urges. Eventually, Cedar was the first one to speak up about it -- in the middle of a hot oral scene.
"Babe, I... um, I want to, well..." Cedar murmured, trying to get the words out of his mouth -- a nearly futile effort. Sasha looked directly into his eyes, trying to weasel the words out of his mouth. Sasha silently cocked her head, trying to pressure Cedar to speak.
Cedar loved the pressure. He loved the thrill. Suddenly, he spoke.
"I want to try... switching," he admitted.
"Oh?" A cruel smirk crossed Sasha's face -- one Cedar had never seen from her before. And it was irrevocably hot. He couldn't get her smile out of his mind. "Go on."
"Well... y'see, since starting HRT, I've just felt..." Cedar blushed. "Like it'd be nice for you to... y'know. Do lewd things to *me*. Like, the kinds of things I've done to you in the past, and I was wondering if--"
Cedar was cut off as Sasha stood up, grabbed his shoulders, and pinned him down to the bed. Cedar's breath was taken from him. The way Sasha looked down at him like he was prey was unbelievably hot -- even hotter than the image he had in his mind. He could only guess that Sasha had been thinking the exact same thing as him - from the opposite side.
"Oh, my sweet prince," she chuckled. "I've been wanting the same thing. So, take off the rest of your clothes for me."
Cedar nodded quickly. "Yes, Sasha--"
"Yes, *Miss*," Sasha corrected.
"Yes, Miss." Cedar wasted no more time and immediately accepted the title Sasha had presented herself with. He forced his binder and his panties off. His boyclit had grown quite beautifully, and with the distribution changes, it almost looked like he already got top surgery. God, signing up for that study was the greatest and hottest thing they could do. They had no regrets.
As soon as Cedar's clothes were off, Sasha leaned down and began peppering him with kisses and body worship. And then, the kisses turned to bites, which turned into hickies. Cedar loved leaving marks on Sasha - at least, in the past. He always wondered what it felt like.
His skin felt so sensitive. Getting marks felt like the greatest thing in the world. Cedar had small climaxes with each one. After the fifth? tenth? twentieth? Cedar was out of breath, and just lay on the bed gasping and whimpering.
"Yeah?" Sasha smirked. "You liked that. You really, really liked that."
"Y-yes," Cedar stammered, all but doing the pleading emoji in real life.
"Well, good news for you, it turns out I like doing that to you." Sasha's hand trailed down Cedar's waist as she kept talking. "I've always been the biggest bottom in the world, and now, I'm just wondering why. Why have I been your plaything when I could have been making you my plaything? It must be so hot for you, to now be a total sub even though your girlfriend is shorter than you."
"I-- yes, yes, yes," Cedar gasped. His eyes rolled over as Sasha reached the tips of his boycunt. She teased them lightly with her fingers, tantalizingly close to sliding them into the wet hole and mercilessly destroying him.
Sasha couldn't hold herself back anymore. She slid her fingers in, making Cedar yelp out. He couldn't believe how great it felt. He hadn't received pleasure in so long, especially not from a bottom's perspective. Sasha was the perfect top for him -- he couldn't even begin to describe how good her fingerfucking was. She slid her fingers in and out, and Cedar could hear his arousal. He could smell it. He could almost taste it. Cedar gasped for dear life, his body shivering with pleasure.
"You like this, don't you?" Sasha smirked. "You like being my fucktoy. You like the roles being reversed. Hell, it's hard for me to see that you were ever my Domme. I'm having so, so much fun with this. I can't believe we haven't switched things up sooner."
"Mhmm..." Cedar whimpered and nodded. He felt so, so close to the edge -- all he needed was Sasha's permission. This entire time, he could have just been a needy, obedient bottom bitch. He could have been *Sasha's* needy, obedient bottom bitch. Well, they still could make up for lost time. They had plenty of opportunities to, after all.
"I want to know you're mine." Sasha leaned into Cedar's face and stared into his eyes menacingly. "You *are* mine, right?" Her fingers moved at lightning speed. Cedar couldn't think about anything else -- all he could think about was obedience, sex, submission, and his now-dominant girlfriend.
He cared about nothing else.
"Yes," Cedar sobbed. "I am yours. I am all yours."
Sasha grinned. "Then, climax for me, fucktoy."
~~
Cedar and Sasha never looked back. Their roles reversed, and stayed that way. Neither of them saw any reason to turn back to how things 'were'.
The changes continued to hit them, one after another. Their friends began to get concerned at how drastic the changes were -- after all, they hadn't seen any kind of HRT that would work that quickly. Their friend circle became worried it was some kind of mad science experiment that was about to go deeply wrong. And, to be fair, they did have reasonable ground to that belief. Within a month, both Cedar and Sasha had their ideal bodies.
They had their ideal minds, too.
Cedar was always the kind of guy to overthink everything. Not only dysphoria wise -- he'd take hours on tests, and would think over every minor, simple task before even starting.
        But now, things were different.
Cedar would still take a long time to do things, but not because he was overthinking -- he was *under* thinking. He couldn't remember for the life of him how to do tasks like paying bills, budgeting, or home improvement. And it showed when he talked, too - hearing him try to form a coherent thought was like waiting for wall paint to dry. Sometimes, he'd just give up, and burst into a fit of dumb giggles.
It was annoying to Sasha, at first, but now? It was *hot* as hell. She loved having a sub who didn't even know how to put two and two together anymore. Cedar didn't have to think about Sasha's commands, no matter how absurd or wild they were -- he obeyed her every command without a single thought.
It wasn't only that. Cedar had become stronger. He hadn't even particularly been working out, but after a couple weeks on the new form of HRT, his body had completely changed. He was graced with an impeccable six-pack, biceps larger than he'd ever seen on himself, and a fantastic load of physical strength. Household chores were no problem for him, as was doing anything that required a level of exertion.
He was a strong, dumb, kind himbo. A himbo who only had to follow his girlfriend's orders and basically be eye candy for her.
What was even hotter was that Cedar was nearly a foot taller than Sasha at that point.
Sasha retained her intelligence, but honestly, didn't want to use any of it. All she wanted to do was spend her entire week fucking Cedar. It was all she could do. Why bother with paying an overdue gas bill or getting groceries when she could have Cedar worshiping her body or flogging Cedar's ass red? The only reason anything got done was when Sasha ordered Cedar to do so - usually taking hours to re-explain to him how.
And then as soon as they'd finish, they'd just go back to having sex. It was heaven.
Three months after they started the trial, Sasha came up with an excellent idea.
"I think we should start a cam website."
Cedar perked up. It took a second for him to process that statement. "What? Why?"
Sasha chuckled. "I mean, look at us. We're both so hot now. We could make excellent money. The study pays us enough to pay our bills, but why settle for that? Besides, don't you want to show off your hot, muscular, himbo bod?"
"Oh. Yeah! That's a great idea, Miss!"
Luckily, they had most of the equipment to make basic videos while making them look good technically. Obviously, both of them looked hot together, and that was most of what they needed.
        They didn't even need to spend time coming up with ideas. Sasha and Cedar had a list the size of a novel of roleplay ideas they could try. What better time than then to use one? They'd been experimenting with some more tame stuff such as teacher and TA, or boss and employee. Now, though, they landed on a story where Sasha's character blackmailed Cedar's into being her servant.
Cedar loved being bossed around. Getting in character made it even hotter -- tenfold as hot when fear play was thrown in. He loved getting threatened and overwhelmed, even if he was clearly the more powerful of the couple. Sasha forced Cedar on his knees and treated him like a punching bag -- literally, and mentally. Cedar ate Sasha out at her command, pleasuring her in whatever way she ordered.
Being on camera made it even more scintillating.
Knowing everyone was going to see how sex-obsessed and horny they were.
Why were they even working all this time before starting the trial, when they could have just been doing this instead? This was what they were good and. And luckily, Cedar had a bit of film editing experience under his belt. He was no expert, but he was good enough to get the clips into a coherent movie. And somehow still had the brain cells to do so. He had to admit, moving the camera during the recording killed the mood a little. But when Sasha ordered him to do so in her usual stern, demanding tone, Cedar's heart would start pounding in excitement again.
With Sasha towering over his seated body, Cedar opened up the clips.
Something felt wrong.
It took him a while to figure out what. Sure, the clips were hot as fuck, and rewatching Sasha beating some sense into Cedar got his boyclit twitching. Everything was fine about the scene itself.
What bothered him was the height difference.
Cedar wasn't very good with numbers, but even he could tell how he was now drastically taller than Sasha. He must have been two feet taller than her at minimum. Cedar's eyes widened, the blood draining from his face. He... how did this happen? He expected a little bit of height growth at most from HRT--
It was the new kind. The new brand they both were on shifted their body structure entirely.
Cedar's eyebrows furrowed. Thinking wasn't his strong suit anymore, but even he could put his last two brain cells together hard enough. This was wrong. He remembered all the other changes -- another being the role reversal.
Cedar was a hard dom before this, and never thought of submitting to anyone. Now, Sasha could boss him around whenever she wanted.
Then there was how much they had sex. It was easier to count the hours they weren't fucking in some way, shape or form. Not that it wasn't a welcome change - that was, if it was in moderation. But it wasn't - both of their sex drives were completely out of control. It wasn't that they didn't want to stop fucking. It was that they couldn't.
And finally, there was Cedar's sudden lack of intellect. Something he formerly took pride in. Now, there was nothing left in his head except for sex, Sasha, and the nagging feeling that something was wrong.
"Uhh..." He started to form a coherent sentence. "S-Sasha. Doesn't this feel, um... wrong, to you?"
Sasha furrowed her eyebrows. "Wrong? Was there something wrong with what we did?"
"N-no!" Cedar protested. "But I mean... look at us! I'm, well, so much taller than you. And you're so much shorter. D-doesn't that feel, um, unnatural?"
Sasha chuckled. "You say that like height dysphoria wasn't your biggest problem before this." Sasha put her hands on Cedar's shoulders and began massaging him. "Come on, babe. This is a non-problem. We're happy. All we have to do is take our hormones and have endless sex. And, bonus points, we've both got our ideal bodies!"
Cedar grunted as he tried to think. Sasha was right - he was happy with his body, and he didn't have to go through the trouble of *working*.
"And besides," Sasha leaned close to his ear. "Now you realize how important serving me is. I think this trial was the best thing we've ever done. We're happy."
Cedar was about to talk again, but Sasha pulled onto his hair. Suddenly, all thoughts drained from his body. Whatever he was going to say next was completely forgotten -- all he could think about was how gooooood Sasha's touch felt. How good it felt to be controlled by his Miss. Cedar couldn't even remember what he was talking about. He didn't care.
"Now, you're going to edit our porno before we go make another." Sasha guided one of his hands to his keyboard. "And you're going to do so while touching yourself, thinking of me."
Cedar chuckled dumbly. "Yes, Miss," he said before following the command.
Sasha watched the clips get edited seamlessly, a smile forming on her face. "You don't need to think about anything anymore," she reassured him. "I'm the smart one now. And you just need to obey me."
Cedar nodded. First, he was going to finish editing and posting the video. Then, he and Sasha were going to take their hormones again - together.