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Eight months ago was the day he died. My brother, Adrian, twenty-two, hale and strong and meant to rule for the next sixty years. He'd been riding that morning: nothing unusual, he rode nearly every day, was an exceptional equestrian. The horse spooked at something, they still don't know what. A snake, maybe, or a shadow shaped wrong. Adrian went over the fence at full gallop and snapped his neck in two on impact.
It was fast, everyone kept saying at the funeral. At least he didn't suffer.
I hope they were right about that much, that Adrian's suffering was over in an instant. Mine on the other hand was just about to begin.
The Council convened three days after we buried him. I wasn't invited initially, all of only eighteen years old, youngest of four, female, relevant to exactly nothing in terms of succession. The law was clear: only a male heir could inherit the throne. We had no others. The line would pass to some distant cousin, a man no one in the court had ever met. Unpolished in manners, unschooled in statecraft, and wholly ignorant of the kingdom's laws, customs, or enemies.
But then, Mother made her case.
I learned about it later, pieced it together from overheard conversations and the cold way my older sisters looked at me. Mother had argued that I was young enough. That interventions available would still be effective at my age, that the transition could be complete enough to satisfy the law's requirements. That I looked enough like Adrian—same dark hair, same cheekbones, same potential height—that the public would accept it.
That sacrificing one daughter was preferable to losing the realm.
The Council deliberated for sixteen hours. Then they summoned me.
I remember standing in that chamber, still wearing black from mourning, while twelve men and three women examined me like a piece of property. They had me turn in a circle; asked about my health history, my menstrual cycles, whether I'd ever been pregnant. One of them actually asked to see my hands, checking the length of my fingers against some chart he had. Then the head physician, Dr. Reeves, explained what would happen.
One injection daily, he'd said. Synthetic testosterone, and genetic modifiers that would trigger male puberty. Nothing too drastic at first; the changes would be gradual, natural-looking. I could continue my normal activities, spend time with my friends, live my life. Just... as a prince instead of a princess.
"Nothing would change," he'd assured me, and I'd been naïve enough to believe him.
The first injection happened that night. My mother held my hand while Dr. Reeves administered it, a thick viscous fluid that burned going in. I was still crying from Adrian's funeral, still processing the fact that my brother was gone, that I barely registered what was happening.
"It's for the family," Mother soothed as the needle withdrew. "For the kingdom. You understand that, don't you?"
I nodded, because what else was there to do?
That was eight months ago. Late March, the beginning of spring, when everything was supposed to be all blooming and new.
Now it's winter, and I don't recognize myself anymore.
###
The changes had begun subtly. In April, I noticed my appetite increasing: I was hungry all the time, eating twice what I normally did. My friends thought it was stress from Adrian's death, and didn't question it when I ordered second and third helpings at the restaurants we frequented. We were happy young women flush with money and time: shopping on the Corso, long lunches at trendy cafes, spa appointments, charity galas that were more about being seen than doing good—this was how our days went. My life had been a pleasant haze of consumption and leisure, and I'd been more than content with it.
By May, though, things were changing in ways I couldn't hide. My chest was flattening. My breasts were smaller, my torso more rectangular. I started wearing looser tops, told my friends I was going through a minimalist phase.
June brought clitoral growth. I noticed it first in the shower one morning, and the shock of it made me stumble backward against the tile. What had been small and neat, tucked away, was now... prominent. Visible—growing larger every day. By the end of the month it was nearly two inches long, impossible to ignore, and when I brought it up to Dr. Reeves, he'd just smiled.
"Exceptional response," he'd said. "Some folks never achieve this level of development."
Indeed. I'd gone back to my chambers and cried for an hour.
The growth continued, aided by increasingly potent doses of medicine; soon, I was looking at something that was unmistakably becoming a small penis. Dr. Reeves measured it at each appointment, noting my 'progress' with obvious satisfaction.
My hips were narrowing, my shoulders broadening. Muscle developing in my arms and thighs without any real effort. I'd always been slender, but now I was becoming built, my body reshaping itself into something masculine and powerful.
The Adam's apple appeared in August, a hard lump in my throat. Swallowing felt strange, and then my voice started cracking, dropping into lower registers that sounded wrong coming from my mouth. By September I sounded like a young man going through puberty, my voice settling into its new range. I was getting strong too, unconsciously so. I'd picked up a bag of my sister Catherine's shopping, and nearly threw it from lifting too enthusiastically. At dinner I'd grip my wine glass too hard and feel it crack under my fingers; my mother started wincing whenever I hugged her.
Which I did less and less frequently, because Mother looked at me now with something like grief. "My baby girl," she'd whispered, touching my face; I'd grown facial hair by then. "What have we done to you?"
But she was the one who'd argued for this. She was the one who'd convinced the Council that I was young enough. Malleable, expendable enough.
Even as I understood why she'd done it, I couldn't quite forgive her for that.
My older sisters—Catherine, thirty, and Elisabeth, twenty-eight—had their own complicated feelings too. They were older, more politically experienced, more prepared to rule. But they were also past the age where the treatments would work effectively. Their bodies had finished developing; mine was still plastic enough to reshape. So they'd been passed over, and I'd been chosen, and they had to sell the transformation harder than anyone.
"Prince Marius," Catherine would say at public events. Always "our brother," "the prince," "the forthcoming heir." Her hand on my shoulder, her smile bright and artificial.
Elisabeth was even more aggressive about it. "His Highness," she'd say coldly whenever it was needed. "Prince Marius uses masculine address."
I'd never said that. Never expressed a preference. But it didn't matter what I wanted: what mattered was what the kingdom needed to believe.
So they performed their roles flawlessly, and I stumbled through mine, and Mother watched with a sad countenance as her youngest daughter disappeared piece by piece.
###
As if the physical changes weren't disturbing enough—slowly I noticed my mind changing too.
By July, I was looking at my friends differently. Sofia, with her long blonde hair and voluptuous curves. Isabella, whose laugh had always been infectious; the sound of it now made something in my groin go tight. Even my sisters sometimes, which filled me with horror and shame: Catherine's neck when she leaned forward, Elisabeth's legs when she crossed them.
I was attracted to them. To women. To people who had been my peers, my companions. My fellow ladies—except I wasn't a lady anymore.
I tried to maintain my friendships, but it was getting hard. We'd meet for lunch, and while they picked at salads, I'd order four entrees and dessert. We'd go shopping, and I'd feel ridiculous trying on dresses that no longer fit my frame. We'd get drinks and I'd down eight cocktails, not feeling anything while they tittered over their second glass of wine.
My alcohol tolerance had tripled. My strength had doubled. My interests were changing in ways I didn't want to think about too much.
And the arousal was becoming unmanageable.
August saw me waking up hard every morning, my growing cock straining against whatever I'd worn to bed. The erections were constant and unmanageable: I'd be sitting in a council meeting and feel myself stiffening for no reason. See a woman in a low-cut dress, and have to excuse myself. I'd tried tucking, the way I'd read, but that didn't work: I was just too big, too hard, too often. Dr. Reeves gave me a cage for it, a small device designed to constrain the growth, and I wore it faithfully for six weeks, but it proved useless by October: I was too large, too responsive, and the cage only made the arousal worse. The intractable pressure and restriction created a frustrated feedback loop that made me obsess over the very sensation I was trying to suppress, until I could think of nothing else but release. So I'd taken to wearing looser trousers, standing strategically behind furniture, disappearing frequently into locked bathrooms.
Still, the testosterone dosage kept increasing. Dr. Reeves explained that they were pushing for maximum development, trying to get my body as masculine as possible before my official presentation as Crown Prince in December. The higher the dose, the more effective the transition, the more convincing I'd be.
The higher the dose, the more I felt like I was losing my mind.
Body hair was coming in thick: legs, arms, chest, stomach; I had to shave my face every morning or risk visible stubble. My jaw was squaring off, becoming more angular. And my cock had reached seven inches. Seven inches. Dr. Reeves was over the moon, called it "extraordinary clitoral development" like that made it a positive thing.
It wasn't a clit anymore. It was a functioning penis, complete with a head and shaft and the ability to get fully, painfully erect. I'd had my first wet dream at the end of fall and woken up mortified, the sheets soaked with evidence of what my body could do now. And the dreams were only getting more frequent: vivid, explicit fantasies about women I knew, ladies I'd grown up as girls with. I'd wake up hard and aching and have to take care of it before I could face the day.
The worst part was that it felt good. The orgasms were intense, more powerful than anything I'd experienced before. My body craved them, demanded them, and I was too weak to resist. I was becoming exactly what they wanted me to become: a man, with a man's body and a man's desires and a man's strength.
I just couldn't figure out how to become one in my head.
###
I'd been bathing myself since childhood, obviously, but Dr. Reeves insisted that I needed assistance now. "To monitor your development," he'd said. "To ensure everything is progressing correctly."
So now, three times a week, I had attendants.
They were always women—Mother insisted on that, said it was more appropriate, though I suspected she just wanted to maintain some feminine influence in my life. Two of them, usually, who would run the bath and then stand by while I undressed.
"Arms up, Your Highness," one of them would say, and I'd comply, letting them strip me efficiently.
The first few times I'd tried to maintain some modesty, but they'd been trained to be professional, to treat my body as an object to be serviced.
"Let me see," the older one, Margot, would say firmly when I hesitated. "We need to document the changes."
So I'd stand there, naked, while they examined me. Measured the length of my cock with a ruler, noting numbers in a ledger. Checked the hair growth on my chest and stomach. Palpated my flattened chest to encourage the tissue to redistribute more swiftly.
"Impressive development," Margot would murmur, and the younger one—Alice—would nod in agreement. Then they'd guide me into the bath, and that was only worse.
They'd wash me with a thorough touch, soaping my chest and arms and legs with bare hands. When they reached my groin I'd try to stay relaxed, try not to think about what they were touching, but it was impossible. I'd get hard: every single time, without fail, I'd get hard while they bathed me.
"It's a natural response," Margot would say, tone calm, "nothing to be ashamed of, Your Highness."
But I was ashamed. Deeply, horribly ashamed—especially when Alice's hands would linger, when I'd see the faint flush on her cheeks, when I'd realize she, too, was aroused by touching me.
Worse—worse still, I myself was aroused too. Not just physically, though my body's response was obvious. But mentally, emotionally, I was responding to their touches in ways I didn't want and couldn't help. Quite plainly speaking, I wanted to bend Alice over the bath. The thought came unbidden one evening, and I'd been so shocked by it that I'd jerked away from her touch.
"Your Highness?" she'd asked, concerned.
"I'm fine," I'd managed. "Just tired."
But the thought persisted, evolved, became more and more detailed. I thought about it later that night while taking care of the erection, and the orgasm had been so intense I'd seen stars.
Besides the baths, there were medical examinations too. Dr. Reeves conducted them weekly, always with at least one of my sisters present as witness. "For propriety," he'd explained, though I wasn't sure whose propriety was being protected. Not mine, surely, I thought, lying on the examination table, keeping motionless and silent while he poked and prodded endlessly.
"Remarkable progress," the doctor said in mid-October, his gloved hands on my cock, stretching it to its full length. "Seven and a quarter inches now. Fully functional, excellent sensitivity."
Catherine, standing by the wall, had made a small sound: approval or disgust, I couldn't tell.
"The testicular development is minimal," Dr. Reeves continued, palpating where my labia had been. "But that's acceptable. We're not attempting to create sperm production—just external masculinization."
"Will he be able to perform?" Elisabeth asked bluntly. "Sexually, I mean."
"Oh yes." The doctor was confident. "Total penetrative capability. His Highness should have no difficulty fulfilling marital duties when the time comes."
They were talking about me like I wasn't right there.
"What about the psychological adjustment?" Catherine asked. "He still seems... uncomfortable."
"That's normal," Dr. Reeves assured her. "The mental transition takes longer than the physical one. But the testosterone is helping. Aggression is up, emotional volatility is decreasing. Give it a few more months and he'll settle into the role more naturally."
Would I? I wanted to ask. Or would I just get better at pretending?
"His Highness needs more exposure to appropriate sexual dynamics," Dr. Reeves added, when no one spoke. "Practical experience could help solidify the masculine identity."
My stomach dropped. "What do you mean?"
Dr. Reeves looked at me as if he'd just noticed I was there.
"Your Highness, you need to have sex. With a woman. In the dominant role. Your body is ready. Your mind needs to catch up."
"I don't—" I started, but Catherine cut me off.
"He's right," she said firmly. "You need to start performing the role in all aspects. We can arrange something discreet."
"No," I said, sharper than I intended. "I don't want—"
"What you want isn't particularly relevant," Elisabeth said. "What matters is what you need to be. And you need to be a prince who's capable of performing."
They were going to arrange for me to have sex with someone. A woman I didn't know, who'd been paid or pressured into service, and I was supposed to just... perform.
The thought filled me with horror.
And arousal.
God help me, I was getting hard just thinking about it.
###
They arranged it for the first week of November. Her name was Lydia, and she was beautiful: dark hair, bodacious, green eyes. A lady-in-waiting to one of the minor nobles, she was young and ambitious, and clearly aware that bedding the Crown Prince could advance her position significantly. She came to my chambers after dinner, wearing a dress that left little to the imagination. My attendants had prepared me: bathed me, dressed me in fine clothes, given me a glass of wine "for relaxation"—then left us alone.
"Your Highness," Lydia said, curtseying. Her eyes went to my groin immediately, and I realized, mortified, that I was already visibly hard.
"Just Marius," I said quietly. "When we're alone, you can call me Marius."
"Of course, Your Highness," she said, not using my name at all. She approached then, hand reaching out to touch my chest, and I stood frozen, unsure what I was supposed to do.
"It's alright," she murmured. "I'll guide you."
But I was supposed to be guiding her, wasn't I? I was supposed to be the man, the dominant one, the one who knew what to do.
I didn't know what to do.
My body knew, though. When she kissed me, I obeyed; kissed back. When she pressed against me, I found myself pulling her closer. When she reached for my cock through the silk, I gave in to the groan and allowed her to.
"You're so big," she whispered, and the praise made something in me preen even as I simultaneously cringed at my own response. She led me to the bed, stripped off her dress, and I saw all of her: full breasts, soft stomach, dark hair between her legs. My cock throbbed with want.
"Take me," she said, lying back. "I'm yours."
And—god save me, I did.
Climbed on top of her, positioned myself, and pushed. She was wet and tight and just incredible, and the sensation of being inside a woman's body was so overwhelming that I nearly came immediately.
"Slow," she coached. "Take your time."
I tried—I really tried. But my body had its own ideas, its own rhythm, and within minutes I was thrusting hard and fast, pursuing a pleasure that felt inevitable. Those encouraging sounds she was making beneath me, her hands on my shoulders, her legs wrapped around my waist. I didn't know if she was actually enjoying it or just performing, but in that moment I didn't care. When I came, it was explosive, whole body shaking with the force of it. I collapsed on top of her, gasping, my mind spinning.
I'd just had sex with a woman. As a man. And liked it.
"That was wonderful, Your Highness," Lydia said, stroking my hair. I could only roll off her and stare at the ceiling, trying and failing to process what I'd just done.
I was a girl. A princess. I was still she.
But my body had just fucked a woman like a man, and I'd come harder than I ever had in my life.
November brought more changes, more complications. Dr. Reeves increased my testosterone dosage again: final push, he said. My cock grew to nine inches. My voice, a baritone. My facial hair came in thick enough that I needed to shave twice a day. I stopped trying to see my friends; the gap between us was too wide now: I couldn't relate to their concerns about fashion and gossip, couldn't participate in their activities without feeling like a fraud.
And they looked at me differently too: a mixture of awe and fear and sometimes more, an attraction that made me deeply uncomfortable.
My relationship with my mother deteriorated further. She could barely look at me now, and when she did her eyes were always full of tears. "I'm sorry," she whispered one evening in late November, touching my face. I had a full beard by then. "I'm so sorry, my darling, my baby girl."
"I'm not a girl anymore," I said, and I wasn't sure if I was trying to convince her or myself.
"You'll always be my daughter," she said. "No matter what they make you look like."
But that wasn't true—hadn't been true for a while. I wasn't just looking like a man anymore.
I'd had sex with Lydia three more times, getting better at it each time—more confident, more dominant. I'd started initiating instead of just following her lead, discovering I liked being in charge. Taken pride in the way she responded to my strength.
###
"He'll be ready?" Catherine asked. That was the final medical exam before my presentation.
Dr. Reeves was thorough, professional, though clearly pleased with the results of his work.
"Nine and a half inches," he announced, measuring my cock for what felt like the ten thousandth time. "Excellent girth, full erectile function, strong ejaculatory response. His Highness is fully sexually mature."
Both of my sisters were present, watching with expressions I couldn't read.
"The secondary characteristics are well-developed," Dr. Reeves continued. "Facial and body hair, voice depth, muscle mass, fat distribution—all within perfectly normal male ranges. The transition has been flawless. The Council will be satisfied."
After the examination, my sisters stayed behind while Dr. Reeves left.
"You've done well," Catherine said, which was the closest she'd come to praise, ever.
"I don't feel like it," I admitted.
"You don't have to feel it," Elisabeth said, curt. "You just have to be it. And you are."
I still think of myself as a girl, I thought but didn't say.
They left, and I sat alone in the examination room, staring at my hands. Large hands now, masculine hands, visible veins and callouses I'd never had before.
Thought about the presentation, when I'd be formally introduced to the kingdom as Crown Prince Marius. The crown I'd wear, the ceremonial robes, the oaths I'd swear. I thought about the life ahead of me: political marriages to women I'd bed dutifully, heirs I'd produce somehow, or have attributed to me, the masculine role I'd play until I died.
In my head, I was still princess, still a girl, someone who'd never asked for any of this. But the mirror showed a virile young man. Handsome, strong, and convincingly male. Who I thought I was and who I'd become: somewhere between those two realities, I was lost. I touched my face, feeling the beard, the Adam's apple, the jaw.
This was me now—prince—whether I liked it or not. That girl I still was in my head: she would have to live with that.