Fate/stay night fanfiction featuring Rin and Sakura

Chapter 1

The alarm clock rang in the morning. A slender hand emerged from under the blanket covering a humanoid figure. Then, a red flash and a yin energy bullet struck the poor alarm clock, and tranquility returned. A quarter of an hour later, the blanket was thrown back, and a naked girl sat up, her face filled with confusion and frustration: "Ah~~~, why is my temper getting harder and harder to control? The aftereffects of the Holy Grail War seem to be quite severe."
The girl's body was slender and upright, her breasts small but perfectly erect, though bearing numerous bruises and teeth marks. Her small, pert buttocks looked full of elasticity, several deep red handprints particularly noticeable. A layer of dried pinkish-white semen stains covered her snow-white body, filling her with a lewd aura.
"Ugh~~~, I played too wildly yesterday, I don't know how I got back." The girl yawned, preparing to go to the bathhouse, glancing at the clock on the wall as she passed through the corridor.
"Oh no~~~ I'm going to be late, I'm going to be late!" the girl muttered, rushing into the bathroom to wash away the traces of yesterday's frenzy. Forgetting breakfast, she rummaged through her clothes.
"Huh? Where are my panties? Didn't I bring them back yesterday? Oh well, I won't wear them, I'll have to take them off at school anyway. Ugh! My pantyhose and shoes are covered in semen! What did I do yesterday? Hehe. Wearing this to school feels even worse than not wearing anything at all, but the smell is so tempting, it feels so exciting, hehe, I'll wear these." She put on the black pantyhose, soaked in semen all night, the lace edges stuck together, which she had to carefully untangle. She slipped on her modified school uniform, revealing a small portion of her ample breasts, the short skirt barely covering her shapely buttocks. She emptied the semen from her high heels, feeling the stickiness on her feet, but it was still manageable for walking.
"Mmm~~ The semen tastes better and better, hehe, today's mission! Collect more semen!" After licking the sticky semen off her hands from getting dressed, she gave herself a thumbs-up and our protagonist, Rin Tohsaka, rushed out of the house, heading to school in the morning light.
Rin sped along, finally bursting into the classroom just as the bell rang. Before she could even feel smug, she heard the teacher's cold voice: "Rin, you almost missed your class. Be careful next time."
"Ah~~, I'm sorry, teacher, I'll definitely be careful next time!" Rin bowed to the teacher in resignation.
"Since you're the last one here, you'll be today's teaching aid. Any problems?" the teacher continued coldly.
"Hehe, no problem, teacher, you're always like this. No matter the reason, I'm the teaching aid anyway." Rin laughed lewdly. What's today's training program? She'd been too wild yesterday and hadn't prepared.
The teacher continued with a wicked smile, "Today's lesson is obedience. I'm sure Rin will want to demonstrate how a sex slave should obey its master. Yamada, come up here. You'll be the master for now. Train this slutty sex slave properly, no problem."
Yamada hurriedly stood up, looking very nervous. "No problem."
Yamada walked up to Rin, but before he could speak, Rin said, "Don't be nervous, Yamada-kun. I'm very obedient."
Rin smiled and looked at Yamada. This made Yamada even more nervous, blushing and speechless for a long time.
Finally, after struggling for a while, he gave his first command: "Rin, take off your clothes first."
"Hehe, Yamada-kun is so cute. Even though your partner is a sex slave, you're still so polite. You can't train an obedient sex slave like that." Rin teased Yamada as she took off her school uniform. Everyone then realized that Rin wasn't wearing a bra. The girl's body was now only covered by transparent black lace pantyhose and matching black high-heeled shoes. Her body, now cleansed, bore no trace of debauchery, and her wounds had been magically healed during her morning bath. At this moment, Rin exuded a pure, youthful aura. If it weren't for the pungent smell of semen emanating from her pantyhose and high heels, it would be hard to associate Rin with a sex slave.
Yamada's gaze was drawn to the body before him, momentarily at a loss.
"Tsk tsk, this won't do, Yamada-kun. A master without authority will be bullied by a sex slave, you know." A lewd smile appeared on Rin's dignified and pure face as she continued to provoke Yamada.
Yamada's face instantly turned red, then he erupted in anger, saying viciously, "Kneel down, you lowly slave, let... let everyone see your filthy hole."
Rin didn't speak, but glanced at Yamada with a flirtatious look, then slowly knelt on the ground, spreading her legs, raising her vulva, and extending her delicate hand. She used her fingers to trace along her small navel, past her hairless vulva, and then parted her labia, exposing her pink vulva to the gaze of everyone.
Her leaning body formed a perfect curve, her snow-white flesh reflecting a dazzling white light in the morning sun. Inside her parted vulva, pink, tender flesh trembled slightly under the lecherous gazes of her many male classmates, then released glistening nectar.
Consumed by lust and shame, Yamada pulled down his pants, straddled Rin's leaning shoulders, and held his erect penis before her eyes, commanding, "You slut, give it to me."
Rin tilted her head back, smiling as she watched Yamada, then extended her pink tongue and licked Yamada's perineum. Her soft, slippery tongue slowly moved upwards, tracing the tightness of Yamada's scrotum, gently kissing his testicles. Then it continued upwards, the tip of her tongue sweeping along the base of his penis, tracing the bulging veins, until it reached the glans, and then probed into the closed urethral opening.
Unable to withstand such stimulation, Yamada instantly ejaculated milky white semen, the faint white fluid splattering onto Rin's face. Watching his penis quickly soften, Rin grinned, scraping the semen from her face into her mouth with her fingers. She swirled her tongue around her lips, then opened her mouth to show Yamada the bubbling semen inside. She closed her mouth, deliberately swallowing the semen with an exaggerated sound. Her mouth opened again, the semen gone. She extended a small lip and gently kissed the glans of Yamada's limp penis, the tip of her tongue resting precisely on the urethral opening where he had just ejaculated.
Yamada, as if electrocuted, could no longer bear it, collapsing to the ground, dejected and defeated.
The teacher shook his head helplessly: "Yamada, go back. You can take what happened as a negative example. As the master, Yamada couldn't control his emotions. Of course, Rin also lacks the awareness of being a sex slave. I'll demonstrate for you myself now."
"Who says I don't have the awareness of being a sex slave? I'm the most obedient. It's just that Yamada isn't like a master," Rin said with a grin.
The teacher turned to Rin, who was still kneeling, and said with a wicked smile: "Rin, go to the teacher's desk and masturbate for everyone to see."
"Teacher is the worst. You just know how to bully me," Rin said, twisting her body as she climbed onto the teacher's desk. She squatted on the desk with her legs in an M-shape, leaned back, supported herself with her left hand, and then used her right hand to first grasp her breasts. Her fingers lingered between her breasts, then slowly traced across her breasts, past her flat stomach and small navel, kneading and pressing her erect clitoris. Rin bit her lip, watching the students below the teacher's desk watching her. Her face gradually turned red, and then her fingers left her clitoris and continued downwards, probing into her beautiful honey hole. One or two fingers slid deep into her vagina, the palm pressing against her clitoris. The nimble fingers teased the soft flesh inside, clear, lustful fluids seeping between the fingers and dripping onto the teacher's desk. A mixture of shame and excitement overwhelmed Rin, soft moans escaping her lips.
Just then, the teacher came up behind Rin, grabbing her long hair and forcing her to turn her head. The moment her lips touched Rin's, she received the most exquisite response: her soft, fragrant tongue eagerly probed into the teacher's mouth, but the teacher leisurely teased it. The soft moans turned into deep groans, the fingers inside her vagina moving faster, her panting chest causing her breasts to tremble slightly.
Suddenly, the teacher pulled away from Rin's steaming, lustful mouth, coldly commanding, "Alright, Rin. Stop masturbating, put your hands behind your head, chest out, head up."
Rin's flushed face was filled with resentment, yet she had no choice but to obey her teacher's orders.
"As a master, you must control your desires, not just those of your sex slave, but more importantly, your own," the teacher said, her fingers beginning to roam over Rin's erect body. Her fingertips seemed to carry a magical current, causing the skin touched to tremble slightly. Rin's eyes began to mist, her hazy gaze filled with lustful desire. Her lower body contracted and relaxed as if suffocating, releasing more fluids, and her tense body began to tremble uncontrollably.
Suddenly, the teacher's fingers pinched Rin's pink nipple, applying gentle pressure: "Do you want it, Rin?"
"Yes...I want it, teacher, give it to me," Rin murmured dazedly.
"Don't move." Rin, still dazed and stiff, was lifted from the desk and placed on the floor.
"You, you, and you. Come up here." The teacher called on three of the stronger-looking male students.
"Take off your pants and stand here, and here too." Three menacing, erect penises surrounded Rin's head.
Then the teacher said to Rin, "I'll reward you with three penises, but you can't use your hands, and you can't change your position. Hehe, whether you can get the semen you want is up to you."
"Thank you, teacher!" Rin hurriedly said, then awkwardly leaned towards one of the penises, opened her mouth, and bent her whole body forward, trying to take the penis into her mouth. But just as she touched the penis, the teacher pushed the boy's buttocks, and the penis that was about to reach her mouth was deflected. The boy understood what the teacher meant. When Rin adjusted her position again and continued to open her mouth to take the penis, just as she touched the hot, intoxicating penis, it slipped past her mouth again. After several attempts, Rin gave up on this penis and tried to find the other two, but the result was the same. Her clumsy movements could not catch up with the penises that were deliberately avoiding her. The repeated failures made Rin almost cry.

Finally, with no other option, Rin could only humbly plead, "Waaah~~, please, masters~~, give me your penis~~. Rin is so itchy~~."
The teacher spoke again, "When your sex slave submits, you can offer some comfort. Go over there."
The boy who was called upon walked to Rin. Rin's thirsty little mouth was finally satisfied; the penis was swallowed whole, and she quickly began to move her head. Plop plop sounds came from her small mouth as her nimble little tongue teased the penis in the air. The boy could no longer control himself, grabbing Rin's head and beginning rapid thrusting in and out of her mouth.
Soon, the penis in Rin's mouth could no longer be controlled, and Rin greedily swallowed the semen that was ejaculated into her mouth. The teacher shook his head upon seeing this and said to the remaining two boys, "You two go too, but take it slow."
The other two eager boys also approached Rin, offering their penises to her mouth. Her previously satisfied mouth, no longer eager, began to lick the two penises together in turn, her tongue stimulating their desire. Finally, one of the boys couldn't resist any longer, grabbing Rin's head and thrusting into her mouth.
Unable to speak, Rin hummed with pleasure through her nose, her victorious gaze defiantly fixed on the boy holding her head. Enraged, the boy could only roar, increasing his speed, slamming Rin's head hard against his penis, which only made him ejaculate faster. Finally, he dejectedly withdrew his drained penis.
Swallowing the semen in her mouth, Rin licked her lips, raised her chin, and looked at the last boy. Feeling provoked, the male student mentally rallied himself, then stepped forward and grabbed Rin's head, slowly inserting his penis into her mouth. Unexpectedly, Rin suddenly began rhythmically biting his penis with her teeth, her tongue coiling around it like a snake before she began thrusting forcefully.
The intense stimulation caused the male student to involuntarily increase his speed, and he quickly ejaculated, just like the previous two. After the last one finished, the teacher said helplessly, "Students, pair up freely. Rin, come with me to the office; the teachers will give you extra lessons."
Seeing Rin following him out of the classroom, the teacher smirked, "A sex slave should act like a sex slave. Don't just stand there."
He then headed towards the office, while Rin smiled and knelt down naked, crawling on all fours behind the teacher.
"Eh, class dismissed? Tsk tsk, are you giving Rin extra lessons again? Count me in." Rin's teacher had just entered the office when Mr. Kuzuki's voice came from behind, and Rin saw Mr. Kuzuki looking down at her.
"Teacher Kuzuki is here too. Perfect, today I'll teach Rin how to obey." Teacher Kuzuki smiled knowingly.
Rin pouted and complained, "I'll definitely listen to the teachers, but those little boys are too green. How can they be Rin's masters?"
"That's true, but Rin still has to be punished today. Come here and stick your butt out." Rin's teacher commanded.
Rin had no choice but to obediently crawl over, turn around, and lie prone with her little butt sticking up high. With a "smack," a slap landed on Rin's buttocks.
"Teacher Kuzuki, you come too." So the two teachers each slapped Rin's little buttocks. The sounds of slapping continued, the force of the blows not great, but already causing a burning pain. More importantly, the pain and shame stimulated Rin's lust. Each slap from the masculine hand on her buttocks intensified Rin's desire. Her bright red bottom began to sway restlessly, her body twisting along, and her vaginal fluids flowing out incessantly.
"Don't move!" Teacher Kuzuki's stern voice rang out, and the force of his blows increased. Rin, afraid to move any further, could only bury her head in her arms, tears welling in her eyes, her body trembling, emitting muffled sobs.
Finally, the two teachers struck her a dozen more times, and then Rin's teacher asked, "Do you know what you did wrong?"
Rin didn't dare to look up, and could only answer softly, "I know, can you give it to me now? I want it so badly."
"What does Rin want?" the teacher asked knowingly.
"Waaah~~ Rin wants Teacher's penis and semen, Rin is Teacher's sex toy, please Teacher give it to me~~" Rin cried out loudly.
"Then come on up yourself if you want it." Rin turned around after receiving the order and saw that her teacher was already lying on the office rest bed at some point. His huge penis was standing straight up, attracting Rin's gaze.
Rin climbed over, straddled her teacher, and grasped his penis with both hands, about to sit on it. Unexpectedly, Mr. Kuzuki came from behind and grabbed Rin's hands, pulling them behind her back.
"You can't use your hands." Mr. Kuzuki gently said the words that were most painful for Rin.
Without the help of her hands, Rin could only twist her buttocks, trying to align her vaginal opening with his penis and sit down, but every time she was about to succeed, the teacher beneath her would deliberately shake his penis away, causing Rin to fail at the last minute. Rin grew increasingly anxious, her petite body twisting and turning as she pleaded, "Please, teacher, help Rin! Give me your penis!"
The teacher didn't help Rin; instead, he caressed her breasts, kneading her tender nipples, continuing to arouse her desire. "Rin, aren't you proud? You should rely on yourself."
"Waaah~~ Rin won't do it again. Rin is teacher's sex toy, a little bitch. Please, teacher, give me your penis. Ah~~~" Amidst Rin's pleas, the teacher finally thrust his penis into her vagina, the immense fullness causing Rin to let out a long groan.
"Move yourself." Before the teacher could give the command, Rin's little buttocks began to rise and fall. However, with her hands held behind her back, the movements were limited, making Rin extremely impatient.
"Ah~~ My back~~ It hurts so much in my back~~ Waaah~~" Rin was vigorously shaking her little buttocks when suddenly a huge object pressed against her anus and slowly inserted itself. The tightly closed anus was stretched open by the huge object, and the tender flesh felt like it was being torn apart. Rin let out a painful cry, but then began to moan with pleasure.
"Too slow, hurry up." Urged by the teacher, her buttocks, along with two huge penises, began to shake faster. But no matter how hard Rin tried, the two penises inside her showed no sign of ejaculating. Gradually, Rin lost her strength.
"Ah~~, I have no strength left~~~, this little bitch can't shake anymore~~~, please, teacher, give Rin your semen." Rin's body went limp, panting heavily, crying and begging the teachers to move.
Seeing that Rin really had no strength left, the two teachers worked together, thrusting their two penises in and out, her soft, delicate body sandwiched between the two teachers.
"Ah~~ Ah~~ Ah~~ Rin can't take it anymore~~, it hurts so much in my back~~~, you little bitch~~ I'm going to be fucked to death~~~" Rin had a silly smile on her face, but tears of pain streamed

down her face. Her body trembled helplessly with the movements of the two teachers, and her little buttocks made a slapping sound as flesh slapped against flesh. Finally, after a hundred or so thrusts, the two teachers, who were about to ejaculate, pulled out their penises, grabbed Rin's hair, and lifted her body. Hot semen splattered into Rin's body, and several streams of milky white fluid flowed down Rin's perky breasts to her belly.
"You're not allowed to wash it off at school today, understand?" the teacher ordered sternly.
"Waaah~~ I understand, I'll definitely keep the teacher's semen safe, you little sex toy." Rin smeared the semen evenly on her body, ate the semen on her fingers, and then nodded and smiled ingratiatingly.
"Alright, go back now." The two teachers, who had enjoyed themselves, did not intend to let Rin stay any longer.
Naked and covered in a layer of white semen stains, Rin wandered aimlessly through the campus. Whenever someone pointed at him, Rin would give them a seductive and lewd smile. Suddenly, he remembered that his younger sister, Matou Sakura, should be training in the archery club. He might as well go and see her.
"I wonder what's become of that repressed little slut Sakura now?" Rin muttered to himself as he pushed open the archery club's door and saw a group of people gathered in a semi-circle. Rin squeezed through the crowd and saw Sakura.
"A little to the left."
"No, no, a little to the right."
"Okay, a little higher."
Sakura was lying naked on the ground, her body covered in a layer of shiny protective oil, practicing archery. Her archery posture was unusual. The bow was tied to Sakura's small feet at both ends, the entire bow lying flat against her legs spread wide in a split. The thick handle in the middle of the bow pressed against Sakura's vulva. The bowstring was already drawn back, the arrow head held in place by the bow's groove, the shaft placed between Sakura's full breasts, held between her cleavage. The arrow fletching, along with the drawn bowstring, was bitten into Sakura's mouth. Sakura's hands were tied behind her back, overlapping and parallel, which propped up her chest. Her head was lifted stiffly and laboriously, her eyes covered by a blindfold, biting the arrow fletching in her mouth, afraid to move. The bowstring was drawn back on both sides of her body.
It seemed that Sakura had been in this posture for some time and had already fired several arrows, as the redness and swelling on the outside of her breasts were clearly from being whipped by the bowstring when drawing the bow. Sakura's body trembled slightly, beads of sweat glistening on her body, coated with protective oil, glistening under the light, adding a touch of eroticism to her appearance. However, following everyone's instructions, they either twisted their bodies or lifted their buttocks, trying to aim at the target.
Seeing Sakura's behavior, Rin, wanting to cause trouble, quietly crawled to Sakura's side and then suddenly slapped her plump buttocks: "Draw your bow, Matou Sakura!"
"Ah~~Waaaaah~~~~" Sakura, caught off guard, instinctively lifted her buttocks, opened her mouth in surprise, and then the bowstring snapped. The taut bowstring struck her breasts with a crisp sound, and then the arrow was propelled upwards along the raised bow, and everyone quickly dodged. The arrow flew out, and with a bang, a poor light bulb was shattered, and the arrow embedded itself diagonally in the ceiling, the remaining shaft vibrating and buzzing.
Everyone was dumbfounded.
"Hehe~~~Hehe~~~Sorry, I missed~~~" Rin let out an awkward laugh, unsure what to say.
"My sister's causing trouble again." Recognizing Rin's voice, Sakura, unable to move, could only weakly protest.
"Uh... you keep training. School's almost over, I'm leaving now." Under the strange gazes of everyone, Rin scurried away from the archery club.

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