That Time We Became Twin Knights of Rebellion
A Ren & Ryuji to Mordred Dual TF/TG

Summary: In which Shadow Kamoshida takes his kinks further than anyone could have expected, and Ren and Ryuji are turned into girls—Mordred Pendragon, unbeknownst to them.

Yeah, it's one of those days.

Notes: This one-shot is set during the events of Persona 5 (Royal), at the beginning of the First Palace Heist. No spoilers for the game are featured.

Only a cursory knowledge of Fate/Apocrypha is required to read this fic.

Warnings: This one-shot features Male-to-Female TF/TG, Sexual Content, Sexual Assault, Groping, Humiliation, and Mature Descriptions.

[Ren]

April 11, 2016 – Morning

Castle of Lust
Underground Prison – Second Floor

I sighed internally to myself.

Today hadn't been a good day so far.

Actually, I haven't had any good days for a long while.

It all started with me hearing a woman cry out for help…

"Ugh, what's goin' on!?"

…but I suppose that's a story to tell another day.

I watched as the vulgar boy I was with—blonde-haired, definitely a little brutish—ran up to our cell door and banged on it.

"Hey, let us outta here! I know there's someone out there!"

As I had long since resigned myself to, no help came for us.

The other boy sulked back to me, confused and bewildered. "Dammit, where are we!? Is this some kinda TV set…?"

Suddenly, an absolutely agonized scream echoed off the walls, startling the both of us.

"Wh-What the—!?"

"Th-The hell was that just now…?"

We headed toward the cell entrance, listening out for whatever it was we just heard. Unfortunately, we weren't disappointed; we were barely able to make out similar cries for relief, somewhere not too far away from where we were.

This is just great. Framed for sexual assault, spurned by just about everyone, late to the only school I have left—and now we were trapped in this… disturbing medieval prison?

What even is my life anymore?

"Whoa… Whoa, whoa, whoa, whoa…" the blonde boy stammered. "You're shittin' me, right…?"

"Looks like we're in real trouble…" I grimly stated. "Whatever they're going through, it's probably gonna happen to us soon.

Vulgar Boy looked freaked out. "I don't want that! Isn't there some way outta here!? C'mon, we gotta do something!"

We started examining our surroundings, from the bars to the barrels to the chains mounted on the walls. But nothing we saw looked useful, let alone able to aid us in any escape. It didn't matter anyway—before we could take a second opinion, our cell was approached by a bunch of guards.

"Be glad that your punishment has been decided upon," one of them said, just like the one that had knocked me out earlier. "Your charge is 'unlawful entry as a male'. Thus, you will be sentenced to sexual re-education."

"What," I said flatly.

That was—what did our gender have to do with anything!?

"You've—gotta be jokin', right!?" Vulgar Boy cried out. "'Unlawful entry'? 'Sexual re-education'? Cut the bullcrap and tell us what's going on!"

Then, we were greeted by a voice I had heard only hours beforehand.

"No one's allowed to do as they please in my castle," it said, distorted and reverberating.

Another figure walked up to us – the guy who had offered that pigtailed girl a ride, gazing at us with a shadowed face and malicious golden eyes. His attire was completely different: he was wearing a crown, a red heart-themed robe, and—

—I couldn't be certain, but based on the sight of his bare legs, that… might have been it.

Oh, ew.

Disbelief came onto my face, as did my classmate's.

"Huh? Wait… Is that you, Kamoshida?" he said.

"K-Kamoshida?" I blinked. "Who…?"

…could a guy like this really be one of my teachers?

Has the world gone mad? Is this real, or am I hallucinating?

(I'm getting more and more regrets every minute…)

"I thought I was dealing with some petty thief, but to think it'd be you, Sakamoto…" he continued. "Are you trying to disobey me again? Looks like you haven't learned your lesson at all, huh?"

Sakamoto… At least I finally have a name to put to my unwitting companion.

He cast his creepy gaze toward me. "And you even brought a friend this time… 'cause you can't do anything for yourself."

Sakamoto tensed. "This isn't funny, you asshole!"

"Is that how you speak to a king?" 'Kamoshida' said scornfully. "It seems you don't understand the position you're in at all. Not only did you sneak into my castle, you committed the crime of insulting me."

Okay, that's it!

"And that's supposed to matter to us?" I growled. "I'm not sure what kind of delusion you've got going on, but you can't just keep us in here like this!"

"Can't I?" The twisted man looked amused. "I know you… you're the new transfer student. I knew you were bad news, but to act like this…? Don't tell me you don't know who I am."

"All that I need to know is that you're crazy," I spat. "Now let us go!"

I glared into his eyes as fiercely as I could, but all he did was smirk.

"That fire in your eyes… on another girl, I'd have quite the time breaking their spirit. You and Sakamoto together are going to be entertaining additions to my collection. Heh heh heh…"

He turned to one of the guards. "You! Bring me the transfer student! Let him be the first to see what happens when you defy the king."

Ah—! This isn't good…!

The cell door swung open, letting in the crowd outside. The knights' empty masks bore into me as they forced me back with every step.

I felt the coldness of the wall seep into my skin.

"B-Back off!" I said, trying not to think about the nervous tint in my voice. "I'm—I'm warning you…!"

I heard Sakamoto cry out, "Goddammit…! I won't let you do this!", and then metal clanking against the ground—but his own grunts of pain followed shortly afterward. I looked: he was bent over now, clutching his stomach and groaning loudly.

"Nnngh… Owww…"

I hissed. "Sakamoto…!"

"Since you've made yourself so oblivious to me and my accomplishments," Kamoshida continued, walking up to me with a magenta aura glowing beneath him, "it's only right that I… teach you the ropes. Nobody's gonna miss you as you are—so this'll be a fine present, don't you agree?"

No, I don't agree!

Two of the knights went up to me and restrained me by the arms, holding me in place despite all the struggling I was doing. More and more sweat crept down my face as Kamoshida wriggled his grubby fingers in excitement. Gah, the mental images!

I stammered, "What are—What are you—!?"

Then, he laid his hands on me—

"URAAAAAAAAAAAAAAAAAH!"

—and my whole world became pain.

It hurts, it hurts, it hurts!

I couldn't feel anything else, couldn't register anything but the sheer, overwhelming agony coursing through my body. I shrieked and thrashed, and all the while, something was beginning to protrude from the top of my head. Something long and thin, split into multiple strands.

I realized the answer when blonde bangs fell over my eyes.

Hair? My hair?

It couldn't be. That's—That's impossible!

What kind of person would have the power to—!?

I—I—

"EEEEEEEERGH!"

The agony was spreading all over my skin, leaving it raw and upping the dosage to unfathomable levels. My body was weakening as time went on—though, whether or not it was because of my tiring or… something else entirely was beyond my ability to grasp.

Maybe it was just me, but—

"Ah… Hah… Hah… OHHHH~!"

—my voice seemed like it was getting louder, too, a little higher-pitched with every shock through my system. My face, my limbs, my entire body—nothing was safe from this scourge, and all of them were exploding and contorting and—

Wait… Why is the world shrinking!?

"Stop…!" I croaked out—Oh god, why is my voice so much more girly!? "S-Stop it! G-Get… your hands… off… of me…!"

"Awwww, can't take the heat?" Kamoshida mocked. At this point, I was well and truly exhausted; my mind was too exhausted for retorts, and my arms couldn't muster any sort of resistance. "Maybe you need a little encouragement to get you through."

Sakamoto belted out something in the background, but I couldn't make it out.

I was… I was just…

…please, someone save me…

Somewhere along the way, my clothes had near completely disintegrated. My blazer and pants were gone, leaving the cold air to rush over my bare skin.

I shivered, feeling as if I had been dunked head-first into a pond in winter.

There was something covering my chest and crotch, though, if only barely. It was soft and comfortable, made of fabric; a cruel irony, considering my current state.

"Don't worry—I'm known for being gentle with my girls. You'll learn to appreciate it… in time."

His hands moved—e-eww!—to my chest, where he started massaging my pectorals with a disturbance fervency. Electricity coursed around them in intense volumes, and—

I couldn't help it. I screamed.

Not just in pain—but in ecstasy.

I didn't know I could reach such shrill tones, or sound so rough in spite of that. (It wasn't just me being tired; my voice was that of a girl's—a tomboy's, most likely, but still a girl's.)

As this torture wound on, his hands shifted around different areas: my chest, my ass, my back, and even my manhood. And each time, it served a different, equally horrifying effect.

"N-No! I—I don't want this! I don't want this! I don't—!"

The first change came very strikingly. I could feel it: two small mounds, growing out of my chest. He was squishing them and groping them beneath my 'clothing', doing all sorts of things that were wholly, utterly violating to think about. They were—They were—

Even through the haze, I could recognize it.

They were mine.

They were my breasts.

But…!

I'm—I'm a b—b-b-b-b—

I didn't have time to think about it, though. My backside was pushing itself out, pressing against the wall; and my torso was lurching violently, causing my sides to uncomfortably cave in. My cheeks were heating up, and my breath was coming in shorter and shorter spurts.

Everything was changing; everything about me was disappearing in a few short instants. I couldn't do anything to stop it, try as I might, and it was absolutely frightening.

And then—

And then, and then, and then, and then—

Kamoshida grabbed my dick, with his dirty, bulky hands…

…and squeezedit as hard as he could.

Something broke within me.

The world seemed to fade away.

Even the sound of my screams didn't reach my ears.

Two specific somethings were receding inside of me.

Two specific somethings that defined me, however in part.

…

And that was it.

It was over in an instant.

Nothing else was registering to me.

All I knew were these couple of things:

There was a slit where my crotch was… and it was dripping wet with undisguised glee.

My body slumped over, though still held in place by the knights' arms.

No…

This—This can't be—

No no no no no no no no—

My 'self' was gone. What tied me to 'Ren Amamiya' was only what I knew myself to be—

—and if what Kamoshida did was any indication, even that might not be safe in short order.

A quiet whimper came from my mouth.

Kamoshida chuckled. "See? There's a good girl."

"You bastard!" I heard Sakamoto yell. "What the hell did you do!?"

"I made her mine. It's clearly what she wanted. If she hadn't, then she wouldn't have come here as that delinquent transfer student. What was his name again…?" He faked taking a moment to contemplate. "Eh, it doesn't matter."

He laid a finger beneath my chin.

I couldn't bring myself to look up at him.

"Look at her. Just a few short minutes, and she's already broken to my will. It's not as interesting as getting to grind down someone inch by inch – but it sure is satisfying to see."

"You're gonna pay for this, Kamoshida! You've gone too far! Change him back!"

"I don't think so. She's much better this way… and soon, you will be as well." He creepily cooed, "I've always wondered what it would be like to make out with twins… I thought I wouldn't get the chance thanks to last month, but now…"

"No… Get away… Get away!"

I felt Kamoshida's presence leave my side.

I knew what was going to happen, and I was powerless to stop it.

Ryuji would be made into a girl, same as me—and then, we'd be nothing more than sex slaves for this twisted monster.

"Make sure to hold our little transfer student down. I don't want her to get any… funny business while I work on Sakamoto here. Heh heh heh…"

…

Is this it? I thought to myself. Is this all that my life is?

Am I destined to be the plaything for people far above me, juggled around and molded for whatever agenda they may have?

…is it even worth trying to escape?

…

What's the matter? Are you simply going to watch?

…

What…?

Are you going to submit to this cruel dictator's whims?

…now I knew I was going mad. There was a voice talking to me inside my brain: loud, booming, so much like my own (used to be).

A fate worse than death awaits both you and him if you do nothing. Was your previous decision… a mistake, then?

I looked to Sakamoto, who was already in the process of being changed. His already-blonde (bleached?) hair was growing longer, and his face was decidedly much more girly now. I caught a sight of green eyes—green, where there had once been brown—staring at me with undisguised horror.

…twins. He said he wanted to make out with twins.

Is that what my face looks like now?

My lips quivered.

I…

"Jeez, I can't believe this… Don't tell me you were all talk with those fightin' words!"

Mr. Not Me was joined shortly after by a second voice: spunky, feminine—basically, how I sounded now, except far more confident.

"You've got my face now, so I expect ya to be at least a little bit badass! C'mon! Are you going to let this be the end!?"

…

Sakamoto's clothes were looking baggier and baggier with every passing second. His skinnier frame was becoming increasingly apparent, and his limbs were barely visible through his sleeves.

And the fabric was…

…

I grit my teeth.

A fire was reigniting inside my heart.

To both their questions, I answered—

"…no. I won't let it be!"

I started struggling as hard as I could against the guards' arms.

Very well. I and my crass companion have heeded your resolve.

Suddenly, a massive headache swept through my head.

"HA-HAAAAA!?"

Vow to me. I am thou, thou art I… Thou who art willing to perform all sacrilegious acts for thine own justice!

My grunts and gasps, already strained from my out-of-breathness, soon morphed into high-pitched, agonized screams.

"Ah—Ahh—Ahhhhhhhhh—!"

Call upon my name, and release thy rage! Show the strength of will to ascertain all on thine own…

…though thou be chained to Hell itself!

"I'll give you a bit of my power, just 'cause I like your guts!" the other voice continued. "Don't let anyone else tell you what to do!

"Now, show them what it means to be a Knight of the Round Table!"

A burst of wind exploded outward, breaking the knights' hold on me. I felt a weight appear on my face (a mask?), almost begging me to rip it off.

I gripped it hard—

"URAAAAAAAAAAAAAAAAAHHH!"

—and pulled.

Blood stained my flesh as the metal left my face. I won't lie to you, it hurt like a sorry bitch. For a moment, I thought it was worse than what Kamoshida put me through.

Then, it was over.

And then, my world became fire.

Power surged within me; filled me to the brim with something genuinely gratifying.

I was being born anew. I was becoming someone greater than who I was.

I was being given a brand-new chance—

And I'm taking it with both hands!

Several seconds later, the inferno faded, and I stepped out back into the cell.

A medieval suit of armor now surrounded my body, covering me whole in a sheen of silver and red. Even without looking at it, I knew what I had – gauntlets and pauldrons and jagged edges to intimidate any foe, and a large dress-like fauld to complete the set.

I spun a long blade in my hand—ornate, sparkling, and glowing a vivid and electric violet. Looking to Sakamoto, I could see that he was most definitely a girl now: her light bust and lack of… that were plainly obvious, as was the fact that her only articles of clothing were—

—a cow-themed bra and panties?

Is that what I had been wearing too!?

I turned to Kamoshida, his golden eyes narrowed in irritation.

That sexist prick…!

Sakamoto looked awed by what she was seeing. "Wh-Whoa…"

"Wh-What the hell is—!?" Kamoshida began.

I levied a glare at him. "Words cannot express how much I hate you right now," I seethed. "Luckily, now I can just show you myself. I'm getting myself and Sakamoto outta here, and then I'll kick your sorry ass!"

"You ungrateful slut…! I'll put you in your place! Guards! Kill her!"

The downed guards unnaturally lurched back up—Brr!—before exploding into these… frankly pathetic looking jack-o'-lantern creatures. (They looked stronger as those faux-knights, I won't hesitate to admit.)

He grinned. "You'll learn the true strength of my men!"

"Like that'll be of any challenge to me!" I instinctively got into a battle stance, and then—looking deep into myself—I summoned one of the voices who had been talking to me earlier.

The one I knew was…

My guardian angel.

"Arsène!"

The fight didn't take long. I took the jack-o'-lantern things down with barely a sweat – if that was the quality I could actually expect to see from Kamoshida's forces, then what did I have to fear from him?

A-Aside from turning us into girls and… trying to do… that to us.

…

(I'm going to have nightmares for weeks.)

Anyway… after I finished, Sakamoto and I locked Kamoshida in our cell and made a run for it. And I mean 'run for it'.

"Just go, just go," I heaved—"don't stop for anything!"

Past doors, barrels, and tunnels we went; if it was a turn we could make, we made it. We didn't really care about anything else—just putting distance between us and him. I didn't even notice when things abruptly started feeling cold and uncomfortable again.

"You really should've just killed him back there," I heard the girl in my head remark. "Letting 'im go's only gonna cause ya problems down the line."

I'll deal with that later! I thought. Right now, I just wanna leave!

Eventually…

"Ah… Hah…" Sakamoto panted, as we slowed down in front of a different set of cells. "Dude… That was… That was insane!"

"You tell me…" I replied, equally exhausted. "When I woke up today, I expected to spend it in class… and as a male… and also minus all this shit…"

Good god, what I wouldn't give to still be sleeping…

"Yeah, man… I knew Kamoshida was a dick, but—still, I didn't think he'd…!"

She shivered, and I did too.

I definitely could've lived without that unfortunate experience.

Then Sakamoto looked at me and said, "Hey… your clothes! They're, uh…"

I looked down—my armor had disappeared. In their place sat a bikini identical to the one she was wearing, cow print appearance and all. Patting my head, I also noticed a red braid tying my hair into a ponytail, with two bangs hovering just over my shoulders.

I peered over the edge into the rushing waters, catching a full glimpse of my face (and Sakamoto's). I felt my cheeks flush as I brought a hand to them. My skin lightly deformed at the touch, more sensitive than it had any right to be.

This really proved it: I wasn't hallucinating in the slightest.

"Shiiiiiiiiiit…" I swore.

"Aaagh, what are we gonna do, what are we gonna do!?" Sakamoto said, her fingers tightly gripping her head. "We can't show up to school like this! The teachers are gonna kill us!"

"Oh, they're gonna be the least of our problems!" I said, trying to keep myself calm (and failing). "We'll need to prove our identities, too! We look nothing like how we used to! We're girls now—girls!"

"Eh, just be glad you're me instead of somebody else. You're really lucky—I'm here to give you advice and really cool magic powers! Most people would kill for that!"

Please stop talking before I can sort everything out. I'm this close to having a mental breakdown.

"Pff. Killjoy."

"Who's gonna believe us when we say we're Ren Amamiya and—" I paused, then looked to Sakamoto.

"Huh…? O-Oh! I'm—I'm Ryuji," she quickly supplied.

"—Ren Amamiya and Ryuji Sakamoto!?" I finished. "We'd look insane! Especially since I'm supposed to be keeping my head down!"

I slid down against a wall and landed on my ass—my soft, moderately perky ass.

I was out of danger—

—but still in enemy territory.

I was completely bereft of support.

Yeah, it's time to panic.

"Wh-What did I ever do to deserve this?" I choked, hands shaking uncontrollably. "What? All I wanted t-to do is t-to try and rebuild my life. I had everything taken away already—did there need to be more on top of that!?"

If it was just the 'branded criminal and forced to live in Tokyo' thing, I could've handled that. It wouldn't have been easy, but the path was at least straightforward!

This, though?

This was just going too far.

I can't—I just can't—

"I want to go home," I sobbed into my palms. "I want to be back with my parents, with all my friends. I want—I want—"

…I want for an impossible miracle.

"Y-Yo! It'll be alright! C-C'mon!" Sakamoto's voice tried to soothe me. "I know this looks pretty bad, b-but—I'm in this with you, too! You're not alone here!"

I kept staring at the stone floor, despondently contemplating my fate.

"You're just like me, right? We don't really have anyone else on our side. And we're girls in a similar situation! We ain't got good odds for ourselves, but sticking together's better than nothin', right?"

I sensed her taking my hands, and I looked up to see Sakamoto with glistening, earnest green eyes.

"C'mon, Renren! Please?"

Despite myself, I snorted. "'Renren'? Really?"

"Hey, we just survived Kamoshida! I think that means we can be a bit close, right?"

I closed my eyes.

Normally, it'd be me saying those words to him.

I mean, I was the guy my friends often went to for comfort, back before I was arrested.

…before they all left me.

It is not a disservice to require reassurance every now and again. Do not fear – you have not yet been abandoned by all.

"Yeah, what he said! You deserve better than those 'ol bastards! If they just gave up on ya like that, then they ain't worth it! Trust me on that."

…do you really believe this?

Of course. Am I not thou and thou art I?

…

I let myself grip her hands and lift me up.

…thanks, you two.

"Anytime! This guy seems a lot my speed, anyway."

"Okay then," I yielded. "Friends. We can—We can be friends, I guess."

"Great!" Sakamoto—no, Ryuji cheered. She pumped a fist into the air—and then froze as her bust, small though it might have been, jiggled a bit from the act. "U-Uh…"

I snorted. "…yeah, I think that's one of the things we're gonna have to get used to," I remarked. " 'Specially since we ain't changing back anytime soon."

I groped my own breasts, a grimace coming onto my face.

This was not how I wanted to be acquainted with girlhood. Not in the slightest.

"Hopefully, nobody'll ask why we're acting weird… I'm already not looking forward to the attention I'm gonna get from everyone."

"Same here… but we can save that for after we get outta here!" Ryuji glanced around. "Where do we go now? It seems like there's dead-ends everywhere!"

"Won't know 'til we try," I replied. "Let's go. I'll take the lead!"

And so we continued on, further into the depths of Kamoshida's dungeon – and soon enough, to the meeting of a friend who'd stick by me to the end of my days. To several, in fact.

But in the moment, all I could think about was me and my friend – how'd we get out of this madhouse together, and how'd we learn how to function as girls instead of boys.

It'd be rough. It'd be uncomfortable.

It'd be… enlightening in a lot of ways I'd rather not bring up here.

But we've got each other now—to fight for; to hang out with; to commiserate about the long, protracted learning process.

Maybe…

Maybe that'd be enough.

I haven't done any First-Person TF/TG fics since A Goddess in Reality. Honestly, that's a little surprising, given how often I utilized that perspective during my earlier years. So, I might as well give it another go here!

As I didn't want this fic to take six months to write, I elected to treat this more like I did A Moment to Relax. Short, sweet; not too detailed, not too sprawling. Of course, the awakening sequence went on a little longer than I expected, but I suppose that's to be expected with me.

I probably could've given Ren a new Persona in light of everything here, but honestly, I just felt lazy. Instead, I just decided to throw in Mordred giving him some of her blessings. It doesn't make a whole lotta sense, but this whole fic is pure self-indulgent nonsense, so who cares?

…y'know, I should really watch more actual Fate content. I can't piggyback off of fanfic osmosis forever…

Well, that's all for now – see you around!