Kakegurui Fanfiction: Yumeko Jabami's Bondage Gamble [20P Illustration]

A cool voice echoed in the VIP gambling room as two slender, fair fingers casually flipped over the hole card. "No... impossible..." Across the table, the boy with bloodshot eyes let out a scream of despair, scrambling to the floor. Just minutes ago, he had arrogantly bet his entire fortune; now, he could only wait in hopelessness for the "livestock" brand to be slapped onto him tomorrow. Yet, the victor of the massive pot showed no hint of pleasure on her face. Saotome Mary sighed softly, her wine-red eyes filled with an unfathomable emptiness. Too boring. Such ordinary games held no thrill for Mary, a born gambler with a craving for madness. Ever since she had systematically crushed several high-ranking student council members and driven multiple arrogant heirs of conglomerates to the brink, few in Hyakkaou Academy dared to meet the genius gambler's gaze. For a full half-month, whenever the boisterous gambling tables saw the black-haired, black-clad girl approach with a smile, everyone would flee as if encountering death itself. No opponents, no thrilling deadlocks that made one's blood boil, no extreme risks of teetering on the precipice of life – the daily school life was like a stagnant pool, even inducing a severe withdrawal reaction in the gambler's body, a profound dryness. Ignoring the wailing loser on the floor, the black-haired girl stood up, bored. Under the gaze of everyone in the room, she calmly pushed open the door and left the suffocating VIP room, heading for the academy's高级更衣室 (high-class changing room). With a "click," the door locked. The changing room was empty. Mary slowly walked towards her locker, unbuttoning her jacket as she went, half-revealing the alluring, proud peaks beneath her blouse. The superior, full curves of her breasts were heart-pounding, her slender waist could be held in a single grasp. Years of navigating extreme psychological gambles had honed her body into a state of dangerous and captivating tautness. "Sigh... without thrilling games, it's truly too dull." Mary sighed with disappointment, bending down to peel off her stockings. She took out a new pair of 15D sheer black stockings. Her round, delicate toes tensed slightly as they slid into the fragile nylon opening. Her hands gripped the edge of the black stockings, slowly pulling them up along her slender ankles, her shapely legs. The warm evening sun outside gently illuminated the black-haired girl's exquisite face, and also the look of disappointment on her features. "Shhh—" The faintest rustle of fabric echoed in the quiet locker room as the stockings slowly rolled upwards, the originally fair skin being enveloped in a layer of dark, semi-transparent shadow. The taut nylon material perfectly hugged the contours of her calf muscles, revealing an incredibly alluring, contrasting flesh tone. The black stockings climbed her thighs inch by inch, all the way to the top, enveloping Yumeko's soft, firm, and enticing buttocks from behind. With a soft "click," they settled just below the curve of her perfectly flat stomach, the entire length of the sheer fabric creating an extremely sensual, suggestive tiny indentation in the soft flesh of her inner thighs. These legs, which could so easily ensnare her opponents' reason beneath the gambling table, now exuded a fatal allure. However, just as Yumeko reached up to open her personal locker, preparing to retrieve her spare uniform skirt, an unsigned black envelope lay quietly within the compartment. Her wine-red eyes narrowed slightly, but there was no panic despite her private locker being invaded. She quickly reached for the envelope, her long, slender fingers then opening it. In the deepest recess of the old school building, the air was thick with the pungent, moldy smell of decaying paper. "Tap... tap... tap..." In the silent corridor, the delicate, school-uniformed leather shoes struck the concrete floor, their crisp echoes reverberating. The signature red blazer of Hyakkaou Academy materialized faintly in the dim moonlight. Beneath the dark gray pleated skirt, legs encased tightly in 15D sheer black stockings strode with unhurried grace, finally stopping before a rusted, heavy iron door. The abandoned archives of the old school building. Yumeko narrowed her wine-red eyes slightly, a subtly bewitching smile gracing her lips. Her fair fingers pressed against the cold iron, and she pushed the door open slowly. With a grating screech of metal, the scene within was revealed. The entire archive room was shrouded in darkness, with only a sliver of pale blue moonlight filtering in from the window. In a corner bathed in this faint light, a cold metal trolley stood. On the trolley, several bundles of rough hemp rope were neatly arranged. Scattered beside them were a few cold gags and collars, blindfolds, and several rolls of extremely wide black industrial tape. It was evident that no one had been in this archive room of the old school building for a long time, and generally, no one would come here. The sudden appearance of these bundles of rope and restraint tools here was clearly prepared for Yumeko, who had come to accept the appointment tonight. Gazing at the ropes and restraint tools on the trolley, Yumeko's excited, frenzied smile widened. She seemed to already envision the gamble and the scenes she was about to face. The intertwined emotions of tension and excitement made her body tremble uncontrollably, her breaths growing heavier. However, for now, only the items that would be used on Yumeko were visible; the person who would use these tools, her opponent, was nowhere to be seen. The next moment, a heavy footstep suddenly sounded from behind Yumeko, followed by the resounding "bang" of the iron door being slammed shut behind her. "Heh heh... Is there really a need to lock the door in such a hurry? Since I've come, I'm naturally here to participate in your gamble." Yumeko didn't turn her head, seemingly unsurprised by what had happened or what was about to happen. In fact, she seemed to relish it, growing even more excited. "You slut in black stockings, you actually dared to come alone. I knew I was right about you. As long as the stakes are high enough, you'll always be interested. You're such a reckless lunatic." The man emerged from the shadows. As he stepped into the pale blue moonlight, Yumeko finally saw that it was Mutoki Jun, who had previously lost everything and become a mere household pet. "Oh...? It's you?" The black-haired girl slowly turned around, her dark gray pleated skirt sweeping in an elegant arc with her movement. Her wine-red eyes scanned the plump man, whose face was slick with sweat from excitement, and a trace of merciless mockery crept into her smile. "I thought it was some desperate stray dog who had lost its way. Classmate Mutoki, what a surprisingly reunion. Shouldn't you be wearing a 'Pochi' dog tag and being used as a footstool on the grounds?" Her words struck a nerve like a precisely detonated mine. The fleshy jowls on Mutoki Jun's face twitched violently. The fake smile he had been maintaining shattered instantly, replaced by a ferocious rage. "Shut up! I'm no longer a livestock to be humiliated!" Mutoki roared like an enraged wild boar, spittle flying. "My family paid a full ten billion! Ten billion yen in exorbitant tribute to help me shed that damned dog tag! And... thanks to you, those trash I once trampled underfoot now look at me with mockery in their eyes!" The fat man panted, his chest heaving. He abruptly grabbed the rough, barbed yellow hemp rope from the trolley, his gaze leering as it fixed on Yumeko's flat stomach and the juncture of her thighs. "I know I can't win against a madwoman like you at a normal gambling table. So today, I'm going to crush your self-righteous pride with the purest physical rules! I'm going to personally bind your body, you slut, into a crippled piece of meat! And with this black industrial tape, I'll bind each of your fingers, one by one, wrapping them until they're dead!" Yumeko had been holding up her phone, seemingly threatening Mutoki Jun not to make any rash moves, lest she send the emails immediately. In reality, she had been recording Mutoki Jun's every action. The man's words just now had also been recorded as new evidence. Now, Mutoki Jun's attempt to forcibly tear up the agreement while no one was around was no longer possible. "Ha, say whatever you want." Mutoki Jun clearly no longer wanted to drag things out with Yumeko. The more he spoke, the more he felt he was losing. He was the one who initiated the gamble, the one who set the trap to ensnare the black-stockinged slut. The longer he continued, the more he felt he was on the defensive. There was no point in saying more. As long as he successfully tied up this black-stockinged slut, the terms of the gamble, the chips and the agreement, would all become irrelevant. Anyway, this slut would never be able to break free from the ropes and escape. The prerequisite for everything was to have her stand there obediently and accept being bound. With this first step, everything else would be a natural conclusion. At least, that's how Mutoki Jun saw it. "Alright, I've given you the chips you wanted, and you've agreed. The gamble can officially begin now. Come here, you black-stockinged bitch, and let me tie you up! Don't even think about playing any tricks!" It was evident that although Mutoki Jun appeared outwardly strong, alone with the girl in a confined space, and as a well-built man, he was desperately trying to assert dominance over the delicate girl in black stockings. However, his tone and demeanor suggested he couldn't quite achieve it, as if he were constantly afraid that Yumeko still had some trump card up her sleeve, ready to strike back at any moment. Someone who had lost once would always feel a step behind. Only when he was certain that Yumeko was tightly bound by the ropes, and that she could absolutely not escape, would Mutoki Jun finally feel at ease. Yumeko, on the other hand, didn't reveal any more hidden cards. The calm, smiling expression on her face had never wavered. The gamble was now a foregone conclusion. Although there were no witnesses, Yumeko had obtained sufficient material evidence. Barring any unforeseen circumstances, the outcome of the gamble had already been sealed, with no room for change. As long as Yumeko could successfully break free, Mutoki Jun would have no way to renege on his admission of the gamble. This was the rule of Hyakkaou Academy. As for how Yumeko would manage to break free, that was another question entirely. The uncertainty of whether she could break free, the uncertainty of whether she could win – this unknown was precisely what made gambling exciting for Yumeko, a true gambler. If she were to prepare meticulously for every eventuality, it wouldn't be something she, a mad gambler, would enjoy. "Hehehe... Of course, I'm just a frail girl. What tricks could I possibly play? If classmate Mutoki is still worried, I can hand over my phone to you now. That way, you won't have to worry about me manipulating my phone to send the emails prematurely." With that, Yumeko tossed her phone to him without waiting for Mutoki Jun's response. Mutoki Jun blinked in surprise and fumbled to catch Yumeko's phone. He looked up to see the girl in black stockings had already approached him. Yumeko lightly licked her moist, red lips, then obediently turned around, placing her hands behind her back, standing completely exposed before Mutoki Jun. "Then, classmate Mutoki, the gamble officially begins. You must tie me up properly. Don't let me escape, alright? If I escape, your life will be completely over." The sense of confinement instantly amplified the body's other senses. Her hands were bound tightly behind her back with rope, her legs tied into numb, unfeeling masses with hemp. The man's hot, filthy fluids still lingered in her nether regions. Now, Yumeko couldn't even guess what awaited her. In this absolute darkness, no matter how twisted and insane Yumeko's mind was, the primal human instinct of fear surged like a tide. Her exquisite body, having just experienced climax and violation, began to tremble uncontrollably on the cold floor. Seeing Yumeko finally fall into passive darkness, stripped of sight and speech, reduced to a trembling, writhing worm on the ground, Mikiya Jun finally let out a long, heavy sigh. "That's more like it... that's how livestock should be." Mikiya Jun sneered, turning to drag a pre-prepared, extremely large, musty-smelling black industrial woven bag from the corner. "You like to scheme, don't you? Well, in this bag, you can properly scheme about how you're going to be my little bitch slut from now on!" Mikiya Jun savagely grabbed Yumeko's tightly bound legs and dragged her like a corpse to the woven bag. To stuff her inside, he disregarded the pain of her body being pulled and forcibly folded her black-stockinged legs, tied stiff by the hemp, towards her abdomen, forcing her into an extremely cramped and humiliating fetal position. "Mmmph!! Ugh!" The violently folded posture sent a sharp pain through her lumbar spine. Her chest was squeezed tightly, and the rough inner wall of the woven bag scraped against the large expanse of her pale skin and torn black stockings, leaving fiery red marks. With the unfeeling "zzzzip" of the zipper closing, her perfect body was sealed completely within an airtight cage of darkness. "I can't move... breathing is so hard... the air in the bag... it smells so foul..." The moment she was stuffed into the woven bag, Yumeko truly felt the horror of being objectified. She was no longer the genius gambler who struck fear into the hearts of students at Hyakkaou Academy, not even a person, but a mere piece of luggage, a piece of meat radiating warmth. Whatever the abuser intended to do, wherever he intended to take her, Yumeko had no choice. She didn't even know what would happen next. If Mikiya Jun simply threw this bag into the sea, Yumeko, tied up as she was, would have absolutely no ability to escape, and her final fate would truly be to sink into the ocean, unknown to anyone. But thinking of this, the extreme thrill only made the crazy gambler's mind more excited. The more dangerous and uncontrollable it was, the more potent the drug for Yumeko, an addiction she couldn't break. Through the thick woven bag, Yumeko soon felt herself being hoisted up by a pair of strong arms and slammed heavily onto a sweat-reeking shoulder. Her stomach churned violently against Mikiya Jun's shoulder, and Yumeko could only bite down hard on the gag in her mouth, forcing herself to endure the suffocating pressure. With Mikiya Jun's hurried footsteps, Yumeko felt her body lurch violently in the darkness, her hearing becoming her sole means of perception. The heavy iron gate being pulled open, the violent shaking as they went down the stairs, the cold night wind of the early autumn night seeping through the gaps in the woven bag, and finally... the sound of a car trunk opening. "Bang!" Yumeko was thrown like garbage into a small space filled with the smell of gasoline and engine oil. The trunk slammed shut heavily, completely cutting off all external sound. The engine roared, and the vehicle began to speed along a bumpy road. As the car swayed, her hands, bound and folded behind her back, grew numb from the pressure, her delicate skin constantly colliding with the hard car floor. Darkness, jolting, pain, suffocation... But in this extreme torment that threatened to drive her mad, the heart of the crazy gambler beat violently in the abyss of despair, in a most bizarre way. "If I die in this dark, lightless bag, then this gamble will truly be lost... But if I can survive... if I can find a chance to turn the tables in this hell where Mikiya-kun thinks he's won everything... what a soul-shattering, ultimate climax that would be..." In this trunk leading to an unknown hell, the black-stockinged queen, gagged and stuffed into a woven bag, trembled with physiological fear and pain, while in the deepest part of her heart, a perverse smile bloomed, unseen by anyone. ... The next morning, the old school building of Hyakkaou Academy. The rope around Yumeko's wrists was threaded through a high pulley. Kidomaru glanced at the black-stockinged slut, oblivious to her surroundings, and sneered before yanking the rope with force. "Mmmph mmmph mmmph—!!!" Deprived of her sight by the leather blindfold, Yumeko felt an agonizing pain in her arms, as if her shoulders were about to be torn apart. Pulled upwards by an irresistible force, her body instantly lost its balance. Kidomaru didn't stop, continuing to pull the rope until Yumeko's entire body was lifted off the ground. Her black-stockinged legs, no longer able to touch the floor, flailed uselessly in the air before finally ceasing their struggle. "Click!" Having hoisted Yumeko into the air, Kidomaru then firmly locked the taut hemp rope onto a metal clasp on the wall. Yumeko was now suspended in the air in a most agonizing posture, her entire weight cruelly borne by her bound wrists. The rough hemp rope dug into the skin of her pale wrists, even drawing beads of blood. "Mmmph mmmph mmmph—!!" Her legs, already spread wide in an M-shape by the bindings, were forced even further apart by gravity as her body hung suspended, an involuntary attempt to maintain balance. Her tattered white shirt offered no coverage. In this aggressively spread, suspended pose, Yumeko's hidden core, slick and glistening from three days of relentless exploitation, was exposed without reservation to the cold, damp air, even seeming to be turned inside out in a posture of utter humiliation. "Hahahaha! Look at you now, you slut!" Kidomaru stepped back, gazing at his "masterpiece" suspended helplessly in mid-air, and erupted in a chilling, maniacal laugh. "Mmmph... Haa... Mmmph!" The fear of losing balance, the dislocated-shoulder pain, and the extreme shame of her exposed private parts caused Yumeko to struggle violently in the air. However, in this perfect and cruel geometric rope system, the more she struggled, the tighter the pull on her wrists became. Yumeko was like a beautiful specimen, its shell peeled away and pinned to the air. Every rise and fall of her chest, each gasp for breath, exuded a desperate, collapsing sensuality. "Don't start trembling so soon, Sakuraba-san. I didn't hang you up like this just to watch you squirt." Kidomaru turned with a sinister grin and walked towards the dark depths of the basement. Accompanied by the heavy sound of rolling wooden wheels, a torture device that would make any sane person's scalp crawl was slowly pushed into the light. A crude "wooden horse," its edges stained with dark, old grime. Even more cruelly, the extremely sharp spine of this wooden horse was fitted with a dense row of protruding metal ball bearings. "This was supposed to be a little toy for you later, but since time is a bit short, you can experience it now. I bet you'll love it, you slut." Blindfolded, Yumeko had no idea what Kidomaru was planning, but hearing the sound of heavy objects being moved, she sensed that something unpleasant was about to be used on her. "Mmmph mmmph mmmph—!" Though her struggles were futile, Yumeko thrashed in the air uncontrollably. It was this resistance that Kidomaru found even more amusing. Soon, Kidomaru precisely positioned the disgusting wooden horse directly beneath Yumeko's widely spread M-shaped legs. The sharp, ball-bearing-covered tip of the wooden horse was only a dozen centimeters away from Yumeko's unguarded, tender core, which was dripping with clear liquid. Her knees were already brushing against the sides of the torture device beneath her.