Prompt: Last night had been the hardest battle of their lives, but Shirou and Altria had done it. They had managed to defeat Heracles and now Illya was home with him- where she belonged. The Grail War was almost over, just the elusive Caster remained... But right now, Shirou just wanted to make a big breakfast for his new family, finally together. But when he returned home, it was a scene from his worst nightmares. Illya naked and being raped... and Altria being treated worse by the man himself. He could only watch in horror as his world flipped on it's head... until someone gave him a chance to do something about it... with her.
Tags: Atrum Galliasta/Altria Lancer, Shirou Emiya/Medea Lily, Illyasviel von Einzbern/Others, NTR, NTR Sort-of Again, Double NTR Partner Swap Shenanigans? Idk what the tag for that is, Rape, Dubious Consent, background gangbang, some bondage stuff, drugging, arguably mind control, maledom, mind break, probably crack, kind of dark, oral, anal, sex
Look it's a lot of stuff, kind of a disjointed mess with poor execution. You've been warned.
This is the worst prompt response yet. If you're new, go back and read literally any other chapter instead to get a feel for my writing. This is a mess, you've been warned.
Illyasviel is using Irisviel's design to represent an aged up version of her. The original request wanted Iri and Illya, but just combined them into one role because I couldn't figure out how to fit Iri into the plot without a lot of explanations and she was just a background element.
Obviously, the correct version of Artoria Pendragon's name is Artoria. I will not debate that. That being said, I believe in only using Artoria for the Saber and her Alter. Altria is for the Lancer variants and the Lostbelt version is Castoria.
I want to apologize to the original prompter for butchering their idea and probably making it worse with this slop.
Shirou Emiya's hands were laden with bags of groceries as he headed home from the store. His servant Lancer- Altria Pendragon, he corrected himself. She had told him her name last night after their victory... and Shirou had told her that he loved her. She had not reciprocated his feelings, but that was okay. Shirou would wait for her to be ready to accept him and that it was okay for her to be human rather than the Lion King. Last night was chaotic. Altria had fought against Berserker- Heracles... and they won. His sister's servant was slain.
But not without a cost. Shirou had to use his final two command spells in the battle. One to unleash her Noble Phantasm and destroy the Berserker, and one to save Altria's life as she would have otherwise died from her wounds. A better mage could have just used a healing spell, but Shirou had one spell and none of them were to heal, so it was his only option. With Altria resting at home, Shirou wanted to surprise her with all of her favorites for breakfast as thanks for all she had done, and a declaration of his care for her. He would win her over and make her recognize that she could choose to be a human- or at least something closer to it.
Well that, and the fact that he had promised Illya he would cook for her. The daughter of his Old Man didn't believe that he was really as good as his servant had claimed and demanded that he do so immediately. She had wanted him to do it when he first brought her home last night, but Shirou had refused citing the late hour. Illya had lived under the thumb of her grandfather for the last ten years, after her Mother died and Kiritsugu left. And Shirou had managed to save her! She deserved to be happy in her new home.
Soon the grail war would be over, just one servant remained after the defeat of Berserker. The Caster class servant… who hadn't not been spotted once during the entirety of the grail war…
Why was the front door open? Shirou was pretty sure that he had closed it behind him. He walked in and was greeted with a scene that he never expected to see.
His sister, Illya, was laid out on the couch, her legs spread wide and a skeletal penis thrusting in and out of her pussy while another pushed into her tight asshole. She was being fucked by two skeleton warriors at once and was covered in their sticky white cum. Shirou's eyes bulged at the sight, his heart racing in shock and disbelief. He didn't know where Altria was, why she hadn't stopped this, but he had to save Illya first!
The skeletons paid him no mind, continuing their ravenous assault. He traced two swords into his hands and shouted, "Trace on!" Summoning the twin dao Kanshou and Bakuya, he lunged at the monsters.
Shirou's blades sliced through the bony fiends with a deafening clang, the steel biting deep into their brittle frames. Each skeleton disintegrated into a storm of dust and bone shards upon impact, their lifeless eyes staring at the ceiling. The room echoed with the symphony of their destruction, yet the monsters' numbers seemed to only multiply. They crowded around him, a macabre tide of undeath that surged forth from the shadows of the room.
As he spun to face another wave of attackers, a sudden, blinding flash of light engulfed him from behind. The force of the spell sent him hurtling to the floor, his weapons slipping from his grasp. His vision swam, stars exploding across the blackness like a cosmic ballet. The taste of blood filled his mouth, and his ears rang with the cacophony of his own pulse. As he lay there, momentarily stunned, his arms were jerked back behind him by an invisible force. An invisible rope wrapped around his wrists and pulled tight, binding his hands.
"Trace on!" Shirou growled, the hammer of a gun cocking in his head as he tried to connect to his circuits and summon a new sword to escape this conundrum. Despite the clear image in his mind, it refused to come. "Trace on!" He yelled in a panic, trying another blade. Still no response. "Trace on!" He could see it in his reality marble, but he couldn't bring it to manifest.
"Oh shut him up already Medea!" A deep male voice called out from the kitchen. "He's killing the mood." Before he had even finished speaking, another invisible rope had lodged itself between his teeth. He tried to scream his aria, in hopes of overpowering the binding with the full manifestation of his reality marble... but he couldn't access it at all.
He looked up and saw a small girl- Medea probably based on what the voice had shouted. She looked around his age- slightly younger even, but the way she acted was that of a monster. Her eyes were a stark, piercing blue that seemed to bore into his soul, a stark contrast to the soft lavender of her hair and the flowing fabric of her dress. She wore a serene, unnervingly calm expression that didn't belong on a face that had just ordered the rape of his sister. Her porcelain skin was a canvas for the crimson red of her lips, which formed into a tight line, seemingly devoid of any emotion as she surveyed the scene in the living room with detached curiosity. The delicate features of her face- the high cheekbones, the small, upturned nose, the light dusting of freckles across the bridge- all painted a picture of innocence, but the way she cared so little about the suffering of Illya made it clear just how inhuman she was.
The skeletons dragged him down the hallway, their bony fingers digging into his skin as they propelled him towards the kitchen. His eyes were glued to Illya's body as she was used by the two monsters in a manner that no human should ever experience. He could see her chest rising and falling with erratic breaths, her body slick with sweat and fluids, her eyes glazed over from the sheer pain that made her moan out. Her moans grew louder and more desperate, and Shirou felt his heart sink with every step he took, he had to save her! But no matter how much he thrashed about, he couldn't break free.
As they entered the kitchen, his gaze shifted to the table where Altria lay, naked and vulnerable. A blonde haired man's hands roamed over her body like a greedy child in a candy store. She was limp, seemingly unable to resist the touches that would have made her flinch if she were in her right mind. Shirou felt his stomach turn at the sight of his servant's lifeless form in such a degrading state, but his eyes widened further when he saw the grin on the stranger's face. The man looked up at him with a smug expression, his eyes gleaming with sadistic pleasure as he groped Altria's breasts, causing the girl to arch her back slightly.
Medea stood in front of him, and two skeleton's at his side as he watched. Altria's body trembled as the man's fingers pinched and squeezed her nipples, eliciting gasps and moans that seemed almost... too genuine. The drugs he had used on her had not only taken away her ability to fight back, but also stripped away the stoic facade she had so carefully cultivated. Her eyes, usually so sharp and commanding, were now glassy and unfocused, her pupils dilated to almost entirely fill her irises. Shirou felt bile rise in his throat as he watched her, unable to reconcile the image before him with the proud and powerful woman he had come to admire.
"Look at her, boy," Atrum chuckled, his eyes never leaving Altria's voluptuous chest, "Isn't she just a delight? She's begging for it now, aren't you, my little toy? She once thought that she could resist the mighty Atrum Galliasta, but she is learning her lesson." He leaned in to whisper in Altria's ear, his hot breath causing her to quiver. Her eyes searched for Shirou, and in that moment, he saw the desperation in them. It wasn't lust or love; it was fear and a plea for salvation. The sight of it tore Shirou's heart into shreds. He had to save her, he had to save them both. Somehow.
"Trace on!" He screamed in his mind, trying to call forth a weapon- any weapon. But no matter which he tried, none would come to hand while bound in those ropes. The skeletons held him firmly in place, their cold, unforgiving grips preventing any escape. His thoughts raced as he tried to figure out what to do next. The anger and despair coiled in his gut like a venomous snake, but he was still helpless no matter how much he thrashed against his bindings.
Shirou's gaze remained locked on Altria, her body responding in ways that seemed both foreign and terrifying to him. Her chest heaved with each breath, her cheeks flushed with a color that was more than just the effects of whatever spell he had on her. There was no chance she wouldn't have squashed him already if it wasn't for Medea's magecraft. Atrum's rough touch washed over her, his hands like talons sinking into her soft flesh. He watched in disbelief as her eyes rolled back, and a guttural moan escaped her lips as he brought her to climax with his skilled fingers. Her body spasmed and convulsed as pleasure ripped through her, a stark contrast to the pain etched into her features.
The sound of her voice, begging for Atrum to take her, was like nails on a chalkboard to Shirou's ears. "Please," Altria whispered, her voice trembling with desperation, "just...fuck me." Just last night, Shirou had asked her for exactly that… and now she was begging for someone else to do it.
The Magus' smirk grew wider, his eyes gleaming with satisfaction. He positioned himself behind her and Shirou had to fight the bile rising in his throat as he watched Atrum align his erection with her entrance. The anticipation in the room was palpable, a dark cloud that weighed heavily on Shirou's heart. With a single, brutal thrust, Atrum impaled Altria on his cock. She screamed, her body arching off the table, and her breasts bobbed wildly in all directions. The sound of flesh slapping against flesh filled the room, punctuating Atrum's grunts of pleasure with a macabre rhythm.
Shirou's eyes were glued to Altria's face, which contorted in a symphony of pain and pleasure that was impossible to discern from each other. Her eyebrows knit tightly, her cheeks flushed scarlet, and her eyes squeezed shut as she came almost immediately. The intensity of her orgasm was starkly apparent in the way she clung to the edge of the table, her nails digging into the wood as if to anchor herself to reality amidst the storm of sensation. Atrum didn't even seem to notice her distress, his own expression one of cold, unbridled lust.
"It feels...so...good..." Altria's voice was strained, almost a wail, and it echoed in Shirou's ears like a damned soul's lament. Her body spasmed around Atrum's cock as she rode the waves of pleasure, each movement making her breasts sway in a mesmerizing, yet horrific dance. The sound of her moans grew more desperate with each passing moment, and Shirou knew that she was JUST trying to convince herself that she enjoyed it. Just trying to make it easier on herself, since Shirou couldn't save her. He didn't want to believe that she could be this way, that she could be reduced to such a state. She was just trying to make the rape bearable. That had to be the only reason for her response.
"Lord Atrum, it's so much better with you..." Altria's voice was a mix of ecstasy and despair as Atrum claimed her once more with his relentless thrusts. The declaration hit Shirou harder than a blow to the gut from Heracles. Despite knowing it was just the spell, knowing it wasn't real, it couldn't be, his resentment grew like a malignant tumor within him. He clenched his teeth and wished he had the power to end this obscene display.
Atrum's smug voice was a grating symphony of dominance and possession. "You see, boy, your little whore is eager to serve a true man like me," he taunted, his eyes gleaming with malicious intent. Shirou felt a surge of rage, his vision swimming with a red haze. But he knew he was powerless, his arms bound tightly by Medea's enchanted ropes. "I knew I had to have this slut when Medea informed me that a dumb kid from the East had actually managed to fall in love with a Ghost Liner... Hahahaha can you imagine? How dumb would you have to be? And she rejected him? A familiar thought they were better than a mage? How pathetic of a mage would you have to be?"
"Originally the plan was to simply kill you, but Caster finally had her first decent idea in her lifetime, finally showed proper respect to her master. She thought it would be more fitting to make you watch as I made your precious servant into my whore. I can't say that she was wrong. The rage on your face makes this so much more fun. I'll admit though, the King of Knights was a much easier whore than I expected. One look at my cock and she was already salivating over it. I expected more from the legendary King Arthur, although I suppose that is to be expected from a woman."
Shirou glared at the back of the blue-haired caster, as much as he was able with how short she was while standing directly in front of him- close enough that her hair occasionally tickled his chest. She had caused this? Death was absolutely a preferable fate to Altria and Illya being raped just to torment him. Why did she give him this stupid idea? He wanted to punch that smug bastard. He thought his cock was impressive? Shirou was just as big! And Altria wasn't some whore! He wanted to scream all of that and more at him, but he could not do a thing with the gag in his mouth.
The scene grew increasingly frenzied, Altria's body a canvas of depravity as Atrum took her, using her as he saw fit. Her breasts, once a symbol of purity and grace, were now painted with the crimson of her own arousal. Each time Atrum pulled out, only to plunge back in, a fresh spurt of ner juices was expelled from her ravished pussy, a stark reminder of the violation she was enduring. Her moans grew louder, more insistent, and she begged for Atrum to fuck her harder, faster. It was a sound that haunted Shirou, a twisted parody of what he had hoped to hear from her in a very different context... with him .
A hand ghosted over his crotch. Shirou flinched. "Shhhh. Don't react," a soft feminine voice whispered in his mind. Shirou did not listen, shaking violently in his restraints. "Look, do you want to take down Atrum or not? Cause if so, stay still!" she hissed as a hand fumbled with the zipper of his pants.
Meanwhile, Altria had moved to her knees and her lips were wrapped tightly around Atrum's cock, her cheeks hollowing with each eager suck. A rivulet of precum trickled down the side of her mouth, glistening under the overhead lights. Her eyes remained shut, a silent prayer for release, her mind likely a tumult of conflicting emotions. The sight was almost unbearable for Shirou, a perverse mix of arousal and revulsion that was only made worse by Medea's actions. He watched as Altria's slender throat convulsed with each movement, her eyes watered, and her face reddened from the exertion. Her body responded to the rough treatment with a series of tremors that seemed to echo through the very air.
Medea, ever vigilant, managed to maintain her illusion of indifference as she deftly maneuvered her hand to unbutton Shirou's pants. Her small dainty hand wrapped around his cock that was at half-mast. "Stop thrashing, you are going to ruin my one chance! I don't like this either!" The voice screamed in his mind- he had never heard her speak, but it was obvious to him that it was Medea based on the movements of her hands.
"Yes it's Medea! I can hear your thoughts you fool! I've linked our minds so we can communicate without Galliasta knowing, so pay close attention and cooperate dammit!" The telepathic voice sounded in his head.
Shirou's cheeks flushed even redder, this time with embarrassment as much as anger at the realization of all the things she had heard. "Yes, I know that you think you are bigger and could fuck her better than Atrum. I don't care. Do you want to stop him or watch your precious Altria... and your sister get raped some more?"
"Good," Medea replied before he could respond. "Then I need you to have sex with me." He could feel her shame over the mind link.
Shirou's mind went completely blank as he tried to wrap his head around the idea. What the fuck was she on about? And he wasn't going to do that... and she looked like a child! A very attractive and lewd child but a child! One he could already see screaming shrilly as his fat cock plunged into her tiny cunt from behind... like Altria was right now... He shook his head violently NO.
"Don't pretend like that stops you from wanting to fuck me, I'm in your head remember. I can see all of your fantasies. And for the record, I'm not some whore like that Lancer. I love Lord Jason and only Lord Jason."
"Get out of my head!" Shirou screamed into the void of his mind.
Medea sighed internally. "Just agree to have sex with me and I will."
"Why do you want to fuck... do that so badly?" The word fuck slipped out in his mind, even if he never would have been able to complete that sentence aloud. Thoughts were unfiltered. Like the forbidden thought of making her scream about how much better he was than this Jason fellow... just like Atrum had done to Altria with him. NO.
"That is not happening," Medea shot down his unvoiced fantasy with a dry tone. "You are a battery and nothing more."
"OUT! OF! MY! HEAD!" He thrashed about in the physical world in an attempt to break skin contact, hoping that doing so would kick out of her his mind. He was not interested in whatever the fuck this was! Even if he liked the thought of her lying underneath him as he thrust into-.
"Okay!" Medea screamed in his mind. "Please calm down! You're going to get us both caught and miss our chance! I'll explain everything."
"Talk."
"Look my master... despicable evil magus that he is... He used a command spell on me to bind my magical energy at a level beyond his own. As such, I can only access less than a tenth of my reserves!"
"Why should I care about saving you?" It was a dumb question, Shirou knew that. One that he had already answered before asking. You never needed a reason to save someone... But he had to prioritize saving his sister. "And what does that have to do with me." Even if he also wanted to save Medea, as much as she had hurt him. She was an innocent girl! A foolish one serving his enemy, but an innocent girl, not even his age.
"L-Look, I don't... I mean it matters that I can't use all of my magical energy, but... The reason it actually matters is because that RAT dared to bind me to obey his every command with a command seal."
"That shouldn't work?" Rin had admitted to trying to use her command spell to force Archer to obey her, and it only made him feel a mild urge that he could ignore. And while Shirou had his biases with his alternate self, he was pretty confident that Medea as a Caster should not be any more susceptible to a command like that.
"The Archer was you!" Medea blurted out in shock, her grip tightening painfully on his penis for a moment. She resumed her lazy stroking behind her back, her cheeks painted a very deep crimson. Thankfully, Atrum was too busy cumming all over Altria's face to pay attention to his slave- Medea.
"Sorry, you're correct of course, normally a command spell could never bind a servant to obey every order from their Master... but when said servant is restricted to have less od than the Master, despite being an Astral body, an exception is made. I've been little more than his slave for this entire war."
"Oh." Shirou gasped audibly at that, and then flinched when he realized how verbal the sound was. He held his breath waiting for Atrum to notice, but he was... sticking his fingers in Altria's ass? Did that bastard have no shame? Her face was now painted white with his seed, semen splattered over her eyes and globbed in her hair. She looked like nothing more than a used whore... and Altria had the most brilliant smile on her face as Atrum inserted his fingers in her rectum. Shirou had wanted her to smile at him like that for so long...And now she was… for him...
His gaze drifted back down to the back of Medea's head and away from the cursed sight in front of him. Shirou was no expert in magical theory, but what she had claimed about the command spells sounded plausible to him? And he wanted to help her... no one deserved to be Atrum's slave. Or anyone's slave for that matter... but especially him. And he wanted to fuck Med - NO BAD THOUGHT!
"Great let's get this over with!" Medea cheered in his mind, mercifully not teasing him about that last part.
"Wait!" Shirou demanded in spite of himself.
"What!?" She spat at him internally, the frustration very visible on her face if Atrum ever thought to glance over at them.
"Free Illya first."
"I can't do that."
"Do it."
"I want to, but I can't!" She whined. "If Atrum sees she's no longer being raped when he glances over, then he'll look to me and order me to stop! And to kill you!" She tried to play to his self interests.
"I won't let my sister be raped!" Shirou snapped at her. "Stop it now! If you want to stop Atrum then start here!"
"I want to... but I can't," Medea apologized earnestly.
"If you can't prove your commitment, then how am I supposed to trust that you will follow through on your end of our deal?" Shirou argued, not believing his argument at all. He just had to spare Illya. Every time he looked over at his older sister, and her admittedly lewd body, getting used like a toy by Medea's skeleton warriors, he wanted to vomit. She didn't deserve to suffer like this... he had promised to protect her dammit! Even over himself. Especially over himself.
"Fine..." Medea huffed. "You're increasing the chance of us getting caught, but so is this argument you won't give up on. I'll have them just rest inside of her, and move whenever someone looks at them. There's a chance he sees through that, but it should limit your sisters suffering some... happy? Now let's get this over with."
Shirou felt a wave of disgust wash over him. He was bargaining to reduce his sister's suffering... with his own rape... even if he wanted to fuck her... it was a twisted world he lived in. This was really going to be how he lost his virginity? Watching the girl he actually liked getting raped while a much smaller girl tried to fuck him in secret?
But Shirou still nodded his head slightly, giving Medea the unneeded silent okay. She slipped out of her underwear, revealing her perfectly shaved pussy to the world, and she wasted no time in standing on her tiptoes and trying to drop onto his very erect cock- stimulated by a combination of her hands and the shameful sight he was being forced to watch.
It was a battle of angles and physics. She had to balance herself while lifting her dress just high enough for him to enter her. It was like watching a gymnast try to perform a routine with her legs tied together. He felt the warmth and wetness of her cunt brush against the tip of his cock, but she couldn't get it in more than an inch or two. He was just too tall and she was too short. She winced and gritted her teeth, trying to force herself down but it was no good.
The room was filled with Altria's screams of ecstasy as Atrum pumped his cock into her ass, making her breasts bounce around like a pair of yo-yos. He was slapping her ass cheeks, leaving red hand prints as he claimed her final hole. Meanwhile, Medea's breathing was getting heavier and more erratic as she tried to keep her balance and push herself down on Shirou's cock.
Shirou's mind was racing with thoughts of his sister's pain and the irony of his situation. He had wanted Altria so badly, and here she was begging for it from someone else, while he was forced to be with Medea. The bond between Master and Servant was sacred, and he had never wanted to break it with Altria, but here he was, about to betray that bond in the most intimate way possible. At least he would be doing the same to Atrum.
Medea's cunt was so tight that even the tip of Shirou's penis was causing her to let out muffled sounds of pleasure, trying to be quiet while the rest of her body was betraying her. She was so wet that she was practically gushing, leaving a trail down his cock that steadily dripped onto the floor. Her cheeks were flushed and her eyes were tightly shut, a stark contrast to the pained expression she had when she first saw Shirou's cock.
The smacking noises of Atrum's flesh on Altria's filled the air as he continued to fuck her without any care for her dignity. Medea's face was a mask of concentration as she tried to get more than just the tip in, her chest rising and falling with every shallow breath she took. She was trying to fuck herself on his cock, but it was like trying to stuff a watermelon into a mouse hole.
Her small hands grabbed his forearms and held them tight as she tried to lift herself up and down, but she had to use his body to brace herself and even then, she couldn't get much movement. Every time she thrust up on his cock, her feet came up off the ground. Each time she descended, she would let out a quiet gasp, her teeth gritting together, her body tightening around the tip of his cock. It was torture for both of them- a cruel form of edging.
Shirou watched in horror and fascination as Medea's cunt stretched around his cock, trying to accommodate the intrusion. He could feel the fear in her heart, but also something else. Desperation? Pleasure? He wasn't sure, but it was definitely there. The sight was obscene, yet mesmerizing. Her pussy was pink and puffy, and the way it hugged the head of his cock made him want to push in deeper despite the circumstances. His hips bucked against hers, despite the restrains.
And then, like a starving man finally getting a mouthful of food, she slammed down onto his cock, her eyes flying open and her mouth forming an 'o'. She had managed to get almost the whole head in, and she let out a guttural moan that was barely contained by her hand. The sound was music to Shirou's ears, even though it was muffled by the hand over her mouth.
Shirou watched as Medea's eyes rolled back in ecstasy, her body shuddering as she adjusted to the intrusion. He felt a surge of power as she orgasmed around him, her tight pussy clenching around the tip of his cock. He was just as good as Atrum, he thought darkly to himself. Unfortunately, this was not enough. Shirou was the one who had to orgasm inside of her for the mana transfer to work. They had to cum together
Medea's cheeks flushed a darker shade of crimson as she tried to push herself up and down on Shirou's cock with her feet off the ground, but it was like trying to climb a greased pole. She was slipping and sliding all over the place, barely making any progress. And she couldn't get off of him on her own. She was stuck... with his cock embedded deep in her cunt and her toes unable to reach the floor... how embarrassing. He was just barely too large…
"Err Shirou..." She whispered into his mind. "Do you uh mind, squatting... I'm kind of stuck."
Her face was red with effort and embarrassment as she glanced over her shoulder to look up at him. Shirou tried to comply with her demand, but found he had no room to do so due to the skeleton's holding him rigid and upright. "I can't... uh... the bindings..."
"Oh..." Medea muttered in the sanctity of her own mind. "Maybe... Atrum probably won't notice if their grips go a bit slack... I think it should be safe to let you bend your knees so you can move a little." Her face was as red as her hair as she admitted that to Shirou through the neural link. She was doing this for practicality and speed... it had nothing to do with her desire to feel his cock get deeper and move faster inside of her...?
Shirou chuckled against his gag and Medea's face paled... he had heard that. Right, the connection went both ways when she didn't guard her thoughts from him. Her skeleton warriors obeyed her silent command and their grip on Shirou's arms went slack, giving him some freedom in his movements. That was all the warning that Medea got, before Shirou's legs slid apart and his knees bent slightly.
Their height difference meant that even with his knees bent, she was still at a disadvantage. Shirou's cock was long and thick, and she could feel it stretching her out, even though she was barely moving. Her body was a tapestry of sensation, with every little movement bringing a fresh wave of pleasure-pain that had her panting in his ear. The sound was music to his ears, a sweet symphony of submission that made him want to take her even more, but his bindings held firm, limiting his ability to do so.
On the table, Altria's body was a canvas of sweat and pleasure as Atrum's rough hands squeezed her breasts, his cock slamming into her ass. The sound of flesh slapping against flesh filled the room, and Medea's own moans grew louder with every thrust she took, echoing the ragged breaths of Altria. Meanwhile, Altria's face was buried in the wood, her eyes screwed shut, as she screamed her fake love for Atrum. Her voice was hoarse from the constant abuse, her body a battleground of ecstasy and agony.
Medea's movements grew more erratic as she felt Shirou's cock swelling even more, the veins on the side of his cock bulging and pulsing with each of her desperate bounces. She was close again, so close, and she knew that if she could just get this one orgasm from him, she would have enough power to end this madness. Her hands clutched at his shoulders, her nails digging into his flesh as she rode him as best she could, her eyes squeezed shut in a mix of pain and passion.
Shirou's mind raced with thoughts of power and dominance as he watched Altria's body being used so roughly. He wished he could do the same to Medea, to show her the kind of man he truly was. That he could do everything that Atrum could. That Altria had made a mistake in submitting to that bastard's cock- drugs or no. But for now, he had to be content with the little control he had, pushing himself as deep inside her as he could while she was in such a vulnerable position. The tension grew, their breaths mingling in the air, and with one final, desperate push, Medea threw her head back and let out a muffled scream as she came hard on his cock. Her pussy clamped down on him like a vice, and he felt himself get even closer to the edge, his balls tightening.
In that moment, Atrum's hand slammed down on Altria's back, pushing her harder into the table as he shot his load deep into her ass. Her eyes rolled back in her head, and she moaned out his name, the sound of their coupling a stark contrast to the silent battle of wills happening between Shirou and Medea. Shirou's cock twitched at the sound, and he knew he couldn't hold back much longer.
Medea's orgasm had brought a newfound energy to her, and she began to move faster, trying to bring Shirou to climax before they were discovered. She leaned back against him, her back pressing into his chest, and he could feel her heart racing. Her thighs quivered with each thrust, and her pussy spasmed around his cock, but she couldn't get the leverage she needed. Despite her best efforts, she was failing to fully satisfy him.
The air was thick with the scent of sex and sweat, and the only sounds were the muffled cries of Altria as Atrum brought her to another peak of pleasure with his hands and the grunts and moans of Medea as she tried to ride Shirou in silence. It was a strange dance, one of desperation and need, but they both knew that the music could stop at any moment if they weren't careful. And it was the greatest dance of her life.
Shirou could not say the same. For him this was just another new form of torture. Medea was oh so tight, and felt oh so good, but she clearly had no idea what she was doing. Her movements were slow and erratic with no rhythm to them. He could only weakly thrust his hips at this odd angle, as she was too small to actually move up and down him with any urgency. His rock hard cock instead just sat inside of her as she barely moved at all. Oh how he longed to just pick her up and fuck her as silly as Atrum had with Altria, to see her orgasm repeatedly as he buried his entire length in her with brutal speed.
"...Okay." Medea whispered in his mind.
"Huh?" Shirou accidentally said it out loud, so shocked was he. She couldn't have been talking about that idle thought right...? Stupid linking of their minds so he could communicate- those thoughts were supposed to be PRIVATE. Medea leaned back against him.
"It's uh... the tactical decision... we aren't getting... anywhere like this... Yeah! That's why... it only makes sense... I'll release your bindings... so you can take control..." Medea mumbled. Shirou envied her ability to keep certain thoughts private. "I can teach you after we've won!" Medea eagerly volunteered... there was supposed to be an after?
The image of Medea in his bed, curled up against his side as they slept- both of them completely naked appeared in his mind's eye and both partners flushed as red as a tomato. The mental image of her naked cute young lewd body caused his penis to throb. "Is that a good idea?" Shirou asked immediately to change the subject. "I... aren't we trying to stay hidden."
Medea turned her head to meet his eyes. "It won't work... yeah... uh... he probably is less likely to notice if we go fast but more risky? I can put up a weak illusion of us being unmoving statues, so as long as he doesn't look too closely... it'll probably hold up...? ...And I think you're cute too!" She practically shouted that last part in his mind.
"If you're sure..." Shirou answered hesitantly despite his very present desire to ravage the girl until she couldn't walk. "If we're taking the risky option, can you also free Illya first?"
"You really care about your sister..."
"Of course I do, I have to save her." Medea felt her heart swell at his words. He was the exact kind of hero she had always dreamed of Lord Jason being...
"Alright... I'll free her at the same time I free you. The skeleton's will still hold her down so she can't screw things up by charging in here though..." Not that she is in any state to do so... "Prepare to move quickly, you'll need to cause us to orgasm simultaneously in a very short window for the mana transfer to work." And if it didn't she would simply try again...
"Will we even have another chance to try again?" Shirou asked. Medea buried her head in his shoulder.
"You weren't supposed to hear that," she grumbled. "While doing this… it's a little harder to focus on keeping my thoughts private." She stood up straight and hissed at Shirou to do the same. "When Atrum is back inside of Altria, I'll release your bindings so you... can... you know..."
Shirou grinned against his gag in spite of the situation before reality set it again and forced him to wear another determined scowl. "Alright, just tell me when you're ready."
"Let me lead this time, Master," Altria whispered in Atrum's ear as she climbed on top of him, her body trembling with a mix of soreness and arousal. With surprising agility for what round they were on, she impaled herself on his thick member, her eyes rolling back as she took control of their lovemaking for the first time. Atrum's grin widened, his grip on her waist tightening as he watched his newfound plaything pretend she could take charge. "Your cock... it's so powerful, so much better than my former master," she moaned, her voice filled with a mix of reverence and desire. "I live to serve you Master." She had never felt or seen Shirou's cock, but there was no way that it compared to her new Master's. It was far larger than the one that Merlin had given her once a long time ago.
Meanwhile, in the kitchen, Medea took advantage of the distraction to release Shirou from his bindings. He immediately pulled her off of him and spun her around so he could finally see her face. His hands grasped her hips, and with a fierce determination, he lifted her off the floor. Her eyes widened in shock and pleasure as he thrust into her, filling the room with the sound of their bodies colliding. Medea's cheeks flushed a deep red, and she tried in vain to stifle her gasps as Shirou's cock invaded her with a ferocity that she had never experienced before. The tightness of her cunt around his length was a revelation to Shirou, who had never felt such a snug fit, and for the first time he could really move while he fucked her.
On the other side of the room, Altria was enjoying the ride of her life. With a look of pure desire in her eyes, she dropped down onto him, her moist folds enveloping his length in a single, swift motion. She threw her head back and screamed with the force of her first orgasm, her body trembling as she came around his hardness. Her tightness was a vice around his shaft, and Atrum could feel his own orgasm building rapidly as she began to bounce up and down on him. Her moans grew louder with each bounce, her voice a symphony of pleasure that filled the air like an aria from a siren's lips.
"Master Atrum, your cock is so big, so powerful! Thank you for making me yours, for filling me so completely!" Altria's cries grew more fervent, her cheeks flushed and her eyes glazed over with pleasure as she rode him harder, eager to satisfy his every need. "I want you to breed meeeeee!"
Shirou's grip tightened around Medea's lithe thighs as he hoisted her up, her legs wrapping around his waist. She gasped, eyes wide with shock and pleasure as his length slammed into her with unbridled force. Her cries, though muffled by the illusion, resonated in the air as she struggled to contain her ecstasy. He felt her quiver and clench around him, her nails digging into his shoulders as she whispered sweet nothings about how great he was in his ear, her voice a symphony of passion and desperation. With each thrust, Medea's moans grew in intensity, her breath hitching as he claimed her depths over and over again. Her eyes, once filled with fear, now gleamed with a newfound hope and desire. "I love this, Lord Shirou!" She screamed into his mouth as he captured her in a brutal kiss- their first kiss. It was as magical as she had imagined it being.
On the kitchen table, Altria's body bounced in rhythm with Atrum's relentless pace. Her moans grew louder, her voice hoarse from the onslaught of pleasure. "Master, please, I want it all!" she screamed, her hips bucking against his as she reached for another peak. Her breasts swung wildly, slapping against his face as she gave herself over to the depravity of the moment. Atrum's hands roamed her body, pinching and caressing her sensitive flesh, pushing her closer to the edge of oblivion. His own groans of pleasure grew more feral as he watched the once-proud servant succumb to his will.
Medea's body was a canvas of ecstasy, her face a portrait of unadulterated pleasure. Her teeth clenched, her eyes squeezed shut, she tried in vain to silence her screams. Each thrust from Shirou's hips sent waves of pleasure rippling through her, and she could feel herself getting wetter, her body betraying her. Her inexperience made every sensation more intense, every stroke a revelation. Meanwhile, Altria's cries grew more urgent, her voice echoing through the room as she begged Atrum to fill her. "Please, please, I need it, I want your child, your seed inside me!" she wailed, her voice echoing through the room.
The air grew thick with the scent of sex and sweat, the room a cacophony of moans and grunts. Medea's walls clamped down on Shirou's cock as she climaxed again and again, her eyes rolling back in her head. The sound was lost to the illusion, but the look of utter bliss on her face was not. Shirou felt his own release building, his hips moving faster, more desperate to find his own end. The sound of Altria's loudest orgasm, a guttural cry of satisfaction, spurred him on. Atrum's grunts grew louder as he reached his peak, his cock pulsing inside her as he filled her with his hot seed. The room seemed to quake with the intensity of their shared release, their bodies a tapestry of passion and power.
Shirou was not a man of excess, but in this moment, he could feel his orgasm approaching like an unstoppable force. His cock was a pillar of steel, pistoning into Medea's tight, warm embrace, her walls convulsing around him with each powerful thrust. Her eyes widened, a silent symphony of ecstasy playing out across her features as she approached her zenith. The tension coiled tighter and tighter in his balls, demanding release. His heart pounded in his chest, each beat echoing in his ears like a war drum. And then it came—his climax—a white-hot surge of pleasure that seemed to rip through him like a bolt of lightning.
Medea's eyes rolled back, and she screamed, a sound so primal and raw it seemed to shake the very foundations of the room. Her pussy clamped down on his cock, her body arching backward as she rode the waves of pleasure that crashed through her. Her nails dug into his shoulders, leaving little half-moons in his skin, as she shuddered and convulsed. Her voice was a symphony of lust and love, her words a declaration that resonated through him: "I love you, Lord Shirou! You're my hero!" I'm no hero.
The illusion strained and buckled under the sheer intensity of their shared release. It flickered like a candle in a hurricane before finally succumbing to the maelstrom of their passion. Atrum's head snapped up, his eyes narrowed in rage as he realized what had transpired. "What the fuck are you doing Caster!?" He roared as he shoved Altria off of him. "You dare betray me? I order you to kill him, you dumb whore!"
Medea giggled at the command as she pressed herself against Shirou's chest, even after regaining her footing. "Why would I do that, my Master? I am quite fond of my Lord Shirou."
Atrum Galliasta gaped at his servant. "You have to obey my every command! I used a command spell!"
"That only worked because you also bound my magical energy… but I found a different way to get the energy needed to easily resist such a weak command. If you want to make me turn on Lord Shirou, you would need to use another command spell… Oh wait, you don't have any more of those, now do you?"
Atrum gaped at her. "Why you! I'll-"
"This is goodbye, my Master. I might not be the version of myself who became the witch of betrayal, but that does not mean that I won't betray you for my Lord Shirou- the man I love in a heartbeat. A version of me was even able to kill her brother for her love, an inferior version of Lord Shirou. And well… I don't quite consider you as important as my brother." Her staff appeared in her hand, and with a wave of it, the rain of light shot out towards Atrum.
The experienced modern magus had no chance to defend himself against Medea's spell from the Age of Gods… but he didn't have to. Altria Pendragon was there in front of him… She held the Sacred Lance out in front of her and it caught Medea's spell, harmlessly causing it to dissipate.
"Altria…" Shirou gasped.
"Emiya," the Lancer class servant replied coldly, none of the normal warmth she said Shirou with remained. "Please stand down peacefully, and accept my place by my master's side. For the sake of the battles we fought, I would not like to fight with you."
Shirou grit his teeth. "What did he do to you, Lancer!?" Shirou roared. "This isn't like you! Are you just that much of a whore?"
"I simply found a better man, a better master," Altria remarked emotionlessly. "And I chose to offer him my loyalty."
"Trace on!" Shirou barked, summoning a sword the Lancer would recognize in his hand… the Sword of Selection, Caliburn.
Altria only frowned at the sight of the weapon from her past. "So I guess you've chosen to die. A pity."
"Lord Shirou!" Medea called out and cast her strongest strengthening magic on her hero. His parameters multiplied hundredfold, to the point where he could nearly keep up with even Altria. That would have to be enough. "I'll support you with healing spells and strengthening, just… I know you'll win!" She cheered him on.
Shirou didn't hesitate to leap at his former servant, Caliburn swinging down in a wide arc. It slammed into Rhongomyniad with a loud clang. The clashing of steel rang around the room, a fight between two people once bound by the closest of bonds. Each of them now supported by someone who had supplanted the place of the other in their heart through pleasuring naught but the flesh.
And both Shirou and Altria were certain that they would be the one to win!
A/N: Leaving it open ended who wins between Shirou/Medea and Altria/Atrum. Obviously, Altria is the most powerful, but can Shirou die? He has Avalon active because he's fighting Artoria and Medea has Pain Breaker which reverts him back to a 0 state when he is injured. As long as Shirou is able to avoid having his brain destroyed, it's impossible for him to suffer lasting damage? You can pretend the winner is who you want, it's a 50/50. Final battle in the war for the Grail and…
Altria was drugged by Atrum according to the prompt, but my angle was that it multiplied her sensitivity a hundred fold and she was already weak from Heracles. I didn't think too much about it. Theoretically, Pain Breaker might make it so she returns to sanity, but Medea isn't going to suggest it and have to share Shirou so…
Got too obsessed with trying to logic out the 20cm gap in Shirou/Lily's height and made the sex weird and disjointed because of it. Want to put emphasis on how much I struggled to write Shirou watching rape and how it sucks. If you ask for get cucked and see it happen prompt- even if it's Shinji or whoever watching, their POV will probably suck- so word of caution.
I'm also just not sure if I enjoy writing real NTR? Like it's hot to read, but the actual writing- especially, when it's a character I like getting cucked, is just depressing? There's a time for it to vibe, but all the NTR prompts I've attempted lately have shifted to be at least somewhat happy for the cuck. The Shinji one, the Sakura plot, arose because I felt bad for leaving Shirou with nothing as a miserable wreck. One cheating prompt I'm working on has Shirou bigger and just not as skilled- but it teases lots that Shirou will get a happier ending in a theoretical sequel. This prompt became a double NTR because it felt so gross writing it as a cuck thing. The Morgan prompt had Saber accepting at the end and happy for Shirou finding some healing. Even the TOHSAKA prompt in part became a bootstrap situation, because I didn't like making Rin so miserable with no happy end.
I'll still do NTR, but I've noticed that I really don't like ruining happy relationships with both partners present (NTRing Bradamante, etc. is likely different, because they are less together). If you submit NTR, expect that nobody is completely miserable- I'm just not interested in the they are so depressed they kill themselves ending. Depression sucks. If you want that in a prompt, I'd suggest submitting it elsewhere. That doesn't mean I won't do Shinji wins prompts where he fucks all the FSN girls, but in those prompts, Shirou will be dead or just never have been romantic with them- Ooh I could have Sakura help Shinji win on the condition that she gets Shirou because insane BB-esque over the top scheming Sakura is fun. Ritsuka getting cucked might wind up as Ritsuka is female and is just the last one to fall to the NTR Protag because that is more interesting to me. I want unique flavors that lessen the depression. Not removing your NTR prompts, just expect them to have a unique twist that make them less shitty to write. I will add those twists myself if you don't suggest them in your submission.
Atrum is genuinely the definition of standard NTR protagonist, he hits most of the notes Shinji does- and a few others, while also being somewhat competent. The El-Melloi extra materials describe him as "Shinji's revenge" and a more competent and skilled version of the character. Confident and exclusively motivated by self interest. Enjoys the thrill of victory above all else. He has that same blend of cowardice and sleaze. He is cruel enough to murder children for scraps of magical energy, and insecure enough to hurt his own chances at victory by hindering Medea to feel powerful. In addition to the Shinjiness, he fucking hates Japanese people- and only Japanese people, believing they are inherently inferior to everyone else- to the point where he doesn't fear Touko Aozaki and thinks her undeserving of her rank in the clocktower. He's Shinji but he has some magical competency and an actual position of power… oh and he also literally has a harem.
Character Portrayals are BAD. You don't have to tell me that.
Atrum does canonically in the VN and only the VN use a command spell to restrict Medea's magical energy to a level below his, rather than stop her from using Rule Breaker. He then wastes both his other command spells on stupid shit due to Medea's manipulations in the VN. In this his three commands were a little smarter: Restrict magical energy to a level beyond his own. Obey his every command. Do not use her noble phantasm on herself.
Alright dogshit prompt done, sorry again to the prompter for bastardizing and ruining it because of a dumb idea I had that I failed to execute. Next prompt is so so much better. It's Shirou with Saber and Saber Alter after a wish to the holy grail goes wrong. It's perhaps my favorite chapter I've written so far. If you want to make me happy with prompt submissions this week, I want simple low effort smut that doesn't require a ton of setup. Sometimes I'm in the mood for something lazy (Think the Kiara prompt).