Mom’s best friend is into self-bondage?

After a long, exhausting day, life goes on, even if she is all alone. "I'll do it again tonight," Li Yan thought to herself. "Is this wrong?" she wondered. "My best friend and her son are just on the other side of the wall, and here I am, resorting to this to satisfy myself." It had been over two years since she’d been with a man. At an age where her desires were at their peak, she had turned to shibari as her only outlet—and once she started, she couldn't stop. "If they knew what I was into, they’d probably think I’m a pervert. I have to keep it quiet..." Li Yan preferred nude bondage. After stripping herself bare, she began with a soft, crimson cotton rope, binding herself in a tight, intricate self-tie. The thin, vibrant cord bit deep into her soft, yielding flesh, forcing her breasts to swell and strain against the restrictive patterns of the rope. This time, she experimented by threading the rope between her legs. She had never managed it before, but as the cord dug into her garden, the walnut-sized knot tied into the rope pressed firmly against her entrance. The intense, unprecedented stimulation sent a jolt of euphoria through her, causing her body to tremble. She fought to restrain herself, pulling the rope taut against her most intimate parts and securing it firmly to the line tied around her waist. Now, even the slightest movement sent ripples of sensation through the ropes; the deep pressure against her sensitive folds and the insistent friction of the knot against her clitoris were maddening. A soft moan escaped her lips. "Ah... ah... ah... it feels so good, husband... why... why did you leave me? It feels so good... so intense... ah... ah... yes, that’s it... right there..." The familiar, overwhelming sensation washed over her. Her most sensitive spots were already slick with desire. Fighting the urge to finish right then and there, she grabbed a longer, thicker hemp rope—about the width of a chopstick—and began to bind her legs together, wrapping them tightly from thigh to ankle in dense, overlapping coils. Her flesh bulged between the ropes, straining as if trying to break free. Finally, she used the end of the rope to bind her feet and toes together until her legs were completely immobilized. Throughout the process, every time she tightened the ropes around her thighs, the knot wedged between them ground against her sensitive core, teasing and probing as if trying to force its way inside. This dizzying, soul-shattering sensation was exactly what she craved. She reached for her vibrator, and as the device hummed against her, sending frantic tremors through her entire body, Li Yan felt as though she might lose consciousness from the sheer pleasure. Li Yan had no idea that a pair of eyes was watching her every move from the shadows. Li Yan forced her mouth open, struggling to shove the gag inside before tightly securing the straps behind her head. To heighten the exquisite agony, she added a short length of rope—a cruel addition that would later become the source of immense torment. She threaded it between the ropes binding her neck and those cinching her hips, pulling it taut until her body arched backward, thrusting her breasts forward and accentuating their curve. Standing up, Li Yan caught her reflection in the mirror: a mature, alluring woman in black stockings, now ruthlessly bound by ropes, her mouth silenced by the gag. A sense of pride and accomplishment washed over her; her self-bondage skills were becoming increasingly refined. "I really am a pervert," she mocked herself. "Almost forty, and I have to tie myself up like this every day just to feel satisfied." The electric vibrator began to slip out as her body flooded with slick, aroused juices. Li Yan retrieved the device and shoved it deep into her garden, using the external knots of the rope to wedge it firmly in place. This meant she would have to endure a dual, relentless stimulation. That extra length of rope she’d added proved merciless; every time she writhed, it tugged at the ropes between her thighs, grinding the vibrator deeper into her, pressing against her very core. At times, she felt it nearly touching her cervix. Li Yan cursed herself for a fool, caught in a paradox of agony and ecstasy. "Why did my husband leave me? I’m so lonely. This toy is all I have, but I want your cock to fuck me until I’m mindless." Tears streamed down her face at the thought, but she couldn't cry out; the gag stifled her sobs into muffled whimpers. Overcome with emotion, her mouth filled with saliva she couldn't swallow, watching as it dripped, drop by drop, from the corner of her mouth onto the sheets. "Mmmph... mmmph... mmmph..." The vibrator’s shifting frequencies, combined with the friction of the ropes against her struggling body, pushed the lonely woman to the brink of madness. As the first climax approached, she fumbled behind her back, locking her wrists firmly with handcuffs. She threw her head back, collapsing onto the bed, writhing with every ounce of strength to savor the peak. She placed the key in a small box with a timer set for three hours. As the handcuffs clicked shut, her self-enslavement was complete. Her loss of freedom was now irreversible, a state that would last for hours. She craved this sensation of helplessness; where once she’d leave the key accessible, now the timed lock promised a longer, more agonizing, and infinitely more intense night of pleasure. Li Yan had suppressed her desires for two years, and tonight, she was unleashing them all. The curled, bound position was agonizingly uncomfortable. Every time she tried to shift, she struggled in vain; sitting up or leaning against the headboard was impossible. Before long, a clumsy movement caused her to lose her balance, tumbling off the bed. She hit the floor hard, stars dancing in her vision, but the pain only fueled her excitement. Unable to move freely, she lay on the floor, struggling even more violently. "Mmmph... mmmph... mmmph..." She cursed herself as a slut, a pervert. *I am a slut, and it feels so good.* The bondage was perfect. The slightest movement sent waves of restriction through her body, and every kick of her legs tightened the rope against her crotch, pressing the knots into her most sensitive spots. With the gag forcing her to drool, she felt a deep, shameful thrill. She surrendered to the helplessness and the abuse, the pleasure beyond words. Her juices flowed freely, soaking the ropes and her pubic hair as she drifted through wave after wave of climax. "Mmmph... mmmph... mmmph... mmmph..." The vibrator kept up its relentless pace. Just as she neared another peak, the device dropped to a lower setting. *Increase the vibration, you little devil! Don't stop, I’m almost there!* She writhed, the ropes biting into her skin. *Ah, yes, that’s it.* Her reactions grew more frantic, her mouth overflowing with saliva that dripped onto her breasts. "Mmmph... mmmph... mmmph... oh, yes... don't stop, you little devil, keep going... I'm coming... I'm coming... ahhh... I'm going to pee... ahhh... I'm going to squirt..." The rope cinched tight against her sex, grinding and pressing with every desperate twitch of her body. With one final, violent surge of struggle— "Two more minutes, finally. I'm absolutely exhausted." Li Yan was spent, desperate to shed the ropes binding her and collapse into sleep. As she struggled to sit up, reaching behind her to grab the box on the bed, it was suddenly snatched away. Startled, she whipped her head around, her eyes widening in sheer horror as if she’d seen a ghost. It was Li Ming! Seeing him there, a violent wave of shame crashed over her. She scrambled to lie back down, burying her face, unable to bear the sight of him. She wished the floor would swallow her whole. To be caught like this by her best friend’s son—had he seen everything? She didn't dare imagine what he thought of her, or the humiliation that would follow if Hu Lina ever found out. Suddenly, a pair of hands began tracing the ropes on her body, sliding down her torso and stroking her legs. She looked up to see Li Ming caressing her. "Auntie... you must be so lonely, aren't you?" Li Yan let out a muffled whimper, unable to speak, her eyes brimming with tears as she looked at him, saliva drooling uncontrollably from her mouth. "To think you’d tie yourself up like this. I never imagined you were into this kind of play," Li Ming said, his voice laced with mockery. Noticing her desperate gaze toward the gag, he reached out and yanked it from her mouth. It came away slick and glistening with her saliva. Li Yan coughed, gasping for air. "Xiao Ming... who let you in? Get out, now!" "Keep your voice down, Auntie. It wouldn't be good if you woke my mother up." "Please, Xiao Ming, just leave. Can’t you just pretend you never saw anything? Be a good boy." "Are you that lonely, Auntie? Why else would you bind yourself like this? I bet you’ve got a toy shoved inside you, too." Li Ming’s gaze dropped, fixated hungrily on the heated, pulsing center between her legs. "It’s not like that... go back to sleep, Xiao Ming. Auntie was just..." "I’m begging you, Xiao Ming. Please, just forget everything you saw. Act like none of this happened..." Li Ming remained silent, his hand sliding up her black-stockinged leg, rubbing firmly against her skin. Li Yan was on the verge of tears; what was this boy trying to do? He reached toward the intersection of the ropes and her garden, where the knots were already soaked dark with her juices. He gave a sharp tug. "Ah! Xiao Ming, what are you doing?" With her nerves already frayed to the breaking point, her body was hypersensitive. That single pull felt as if he had ripped her very soul from her body. "Let me help you, Auntie. I know how lonely you are." "It’s not like that..." "Only in AVs do people play with bondage. Isn't it because you haven't been touched in so long that you're resorting to this to get your fix?" Li Yan couldn't refute him. He was right; ordinary stimulation no longer satisfied her insatiable hunger, leading her to seek the thrill of self-bondage. She never expected a teenage boy to see right through her. "The puddle on the floor—that was from you playing with the ropes, wasn't it? I saw the whole thing. You really are a nympho, Auntie." Li Ming reached out, using the knots to tease her garden, then probed inside with his fingers. He found the toy, pulled it out, and thrust it back in, over and over. "Ah, don't, Xiao Ming!" Hearing him describe her self-bondage and her climax left her speechless. Shame, helplessness, and fear welled up, tears swirling in her eyes as she bit her lip until it bled. "Let me help you, Auntie. Your husband has been gone for so long—you're at that age where you're like a wolf or a tiger, aren't you? You're starving." The boy had voiced her deepest, darkest truth. Her defenses shattered. Sobbing, she whispered, "Xiao Ming... Auntie is so lonely. Auntie wants it so badly..." Seeing her break, Li Ming stopped holding back. He locked the door, climbed onto the bed, and crushed his lips against hers, while his hand worked the ropes, relentlessly frictioning her garden. "Ah, Auntie, you're so beautiful. I love you, Auntie. From the very first moment I saw you, I wanted to fuck you. You’re just too beautiful." So, it was Xiao Ming. He had been tailing her, watching her every move. Li Yan did a quick check; thankfully, none of the toys were visible, and the ropes binding her heels were hidden well enough in the dim light. The bus had quieted down, though passengers continued to shuffle on and off. Li Yan felt a dull, throbbing numbness between her legs and craved a release right there on the bus. "Xiao Ming, make it vibrate. Your auntie wants to get off." What a slut, he thought. Xiao Ming tapped the remote, cranking up the intensity. The sudden surge forced a sharp, involuntary "Ahhh!" from Li Yan’s throat. Xiao Ming immediately killed the power, but it was too late—the passengers in the back were staring. The vibration had been too intense, too sudden. Perhaps it was the lingering shame from earlier, but her body was in a state of hyper-sensitivity. She had no choice but to endure the scrutiny of the strangers. She knew they must think she was a freak, but being watched—the thrill of the public exposure—only made the heat in her body more intense, driving the slut in her to a fever pitch of pleasure. After what felt like an eternity, the bus finally reached her stop. Li Yan felt a wave of relief, but the tape binding her legs made moving a struggle. She had to hop off the bus just as she had boarded, drawing another round of bewildered stares. She had no choice but to accept their judgmental gazes. "Xiao Ming, let’s go to the park. There’s no one there." They reached their destination. The park was flanked by trees, with a path cutting through the middle that led toward the countryside. Though people often walked here for exercise, they veered off into a secluded grove. It was night, but the streetlights along the perimeter were bright, and the trees were draped in multicolored fairy lights, making everything clearly visible. They walked a bit further until the darkness swallowed them—it was perfect. "The warm-up is over, Auntie. You can let it all out now." The wild, open-air environment ignited Li Yan’s carnal desires. The urge to be a bitch, the thrill of being exposed—it all rushed to her head. She couldn't help herself; she stripped off her coat, revealing everything. The tape wrapped tightly around her thighs pushed her buttocks into an exaggerated, provocative arch. Xiao Ming watched as she stood there, her pussy bound and forced open by the ropes. Clad in crotchless black silk stockings under the moonlight, she looked devastatingly forbidden. *God, it feels so good.* A searing heat flooded her body, as if she were standing naked before the world. The acupressure mat inside her high heels felt divine; the uneven, digging sensation was the perfect reward for her aching, nylon-clad feet after the long walk. Li Yan pulled off her mask, her mouth finally free. Saliva pooled and dripped down her chin, trailing over her chest and onto her stomach. The silk stocking stuffed in her mouth was soaked through, slick and sticky, the taste of her own drool mingling with the pungent, musky scent of her arousal from the earlier bathroom session. She then took the rope that bound her neck, threaded it behind her back through the waist restraint, and pulled it down between her legs, cinching it tight. Driven by the overwhelming surge of desire and the total release of her inhibitions, she pulled with all her might. The more it hurt, the more she craved it. She yanked the rope hard, forcing her head to tilt back toward the sky. "Ahhh... yes... just like that... my whole body is trapped... it feels so good... so good... I really am such a slut... just a lonely woman, that’s all I am... Ahhh! Yes!" Xiao Ming watched from the side, the lewd spectacle causing his own blood to rush to his groin, his cock swelling against his pants. He didn't want to interrupt; he wanted to see what this insatiable woman would do next. Li Yan felt like a plaything, her head thrown back, the electric wand between her legs pulsing at a low, steady frequency, silver droplets of nectar dripping down. She scanned the area one last time to ensure they were alone, then prepared for the main event. She reached for the power box to turn up the voltage. She flicked the switch, and a violent surge of electricity tore through the toy inside her. "Mmm-mm-ahhh! Mmm... ahhh! Ahhhhhh!" Her cries echoed through the empty park, involuntary and raw. The vibration was intoxicating! The electric shocks hammered against her pussy, the tremors vibrating through her steel-plugged anus as well, leaving her with a constant, desperate urge to void herself. Her legs turned to jelly; she could barely stand. "Ahhh! Ahhh! It feels so good... it’s too much... I want it... I want it... it’s coming... it’s going to come out! Ahhh! So good!" Li Yan wailed, abandoning all pretense of dignity. She collapsed, her mouth aching from the gag, the stocking pressing hard against the back of her throat. She wanted to rip it out, but the agony was part of the thrill. The clips on her nipples had been vibrating for an hour, bordering on painful, but combined with the dual-vibration and the electric shocks below, the intensity had multiplied tenfold. The jolts and tremors shook her entire frame. Even for her, it was almost too much to bear. Xiao Ming reached into the box and pulled out the biggest one—a massive, dildo-like toy, roughly the thickness of a rolling pin. It was the thickest one in the collection, and it came with a remote control. Its sheer girth was perfect. Xiao Ming knew Li Yan was desperate to relieve her bladder, so he decided to plug her front entrance first; that way, Aunt Li wouldn't have to hold it in anymore. It was almost too thick to insert, so Li Yan prepared to do it herself. She was bursting with the need to urinate and hoped that plugging herself would provide some relief, but no matter how she tried, she couldn't quite get it in. Xiao Ming applied lubricant, which helped it slide in a bit, but it wouldn't reach the depth she craved. Li Yan had to bring out her secret weapon: a tube of heavy-duty lube. She coated the latex rod and began to push. "Ah!" It went all the way in, causing a sharp sting that forced a cry from her lips. She gritted her teeth, inching it inside bit by bit. Xiao Ming reached out to help, spreading her labes to make the insertion easier as she thrust against it. The massive object filled her empty, aching passage, instantly turning her sensitive core into a throbbing center of pleasure. "Ah, ah, ah... mm, mm... ah, ah..." Li Yan couldn't help but moan, though she tried to keep it quiet, fearing Hu Lina might still be awake. Her bladder was so full that she couldn't help but leak a little during the process, much to her frustration, but finally, the entire length was buried deep inside. Once it was fully seated, the fullness made Li Yan feel as though she had already released a flood of urine. With the toy inside, Aunt Li wanted to test the sensation. "Xiao Ming, press the remote and let me see what it feels like." As soon as Xiao Ming pressed the button, the vibration was even more intense than the last one—it was lethal. He had only set it to the first level, yet the tremors nearly sent Aunt Li over the edge. Li Yan could see the flesh of her thighs trembling violently. She immediately told Xiao Ming to turn it off. "It’s too much!" There were three levels in total, and even the first one was unbearable; it was almost too much to handle. Custom-made gear was truly on another level. That brief burst of vibration had already left her feeling raw and lonely, craving that tight, restrained sensation. But to ensure the best stimulation for later in the night, Li Yan had to force herself to suppress her mounting desire. Li Yan reached into the box and pulled out a second toy to insert into her rear. "Auntie, what is that?" Xiao Ming asked, confused. "You wouldn't know, but this is high-tech. Let Auntie demonstrate." It did look sophisticated—a set of seven magnetic steel balls, each the size of a walnut. Li Yan had spent two thousand yuan on this custom piece. Since she didn't work, she relied on the monthly transfers from her cheating husband; it was a significant sum, and while it was expensive for daily expenses and cosmetics, it was worth it to satisfy the cravings of a lonely, lustful housewife. It looked like a string of beads. Xiao Ming remembered seeing something similar in adult films—seven magnetic balls controlled by a single remote. It had five settings. The first four were vibration frequencies, but the fifth was a super-magnetic mode. When activated, the balls would generate a powerful magnetic field. The magnetic force would create a repulsion effect, pushing the balls about a centimeter apart for a second. Then, it would switch to an intense attraction, snapping them back together, all while maintaining a constant, deep vibration. Just thinking about it was a thrill. With seven balls inside her rear passage and the fifth setting turned on, nothing would be visible from the outside, but inside, the seven balls would be pushing and pulling against each other, causing her rear to completely surrender to the chaos. Xiao Ming pulled out a pair of panties. "Xiao Ming, you and I are on the same wavelength—this is it." They were stainless steel panties designed to lock both the front and back. The toys were too large to be held in place by straps alone, so once she put on the steel panties and locked them, the toys would be trapped inside, ravaging her two secret passages at will. As she thought about it, she began to insert the balls into her rear. They were quite large, and the insertion was difficult. She hadn't prepared with an enema, and she felt incredibly dry and tight; every time she pushed, it felt uncomfortable, like she was trying to pass a stool, which made Li Yan feel like she was on the verge of a breakdown. After a long struggle, she managed to get five in. The sixth wouldn't budge, and her rear felt stretched to the point of pain. After all, she had been holding it in all night. She decided to leave the last two out. Li Yan put on two large nipple rings and used tape to attach two more steel balls to them, hoping to make her breasts even more sensitive and drive her desire to a fever pitch. Her juices began to flow, and once the rear was set, she turned the switch to level one. The vibration sent a tingling, numbing sensation through her rear, and her front immediately began to heat up, her nipples hardening. "Ah, ah, ah... so good... just like that... being sucked in so tightly... ah, ah, ah... it feels so good..." Li Yan couldn't help but let out wanton cries; for a lonely wife like her, the sensation was divine. Feeling the peak approaching, Li Yan decided to increase the intensity. The vibration was clearly designed for a thrill-seeking housewife like her—it hit every spot, body and soul. She slowly cranked it to level four. The vibrations were incredibly intense now; she could turn her head and see her buttocks and her front passage trembling. She was absolutely in love with this toy. Finally, it was time to try level five. She had read that it was difficult to endure and would turn her insides upside down. She braced herself and clicked it up. Instantly, she felt the five balls inside her rear flying together, a sensation of being violently pulled inward. "Ah, ah, ah... it's here... ah, ah, ah... it's suctioning inside me... ah, ah, ah..." Whether from pain or pleasure, Aunt Li’s expression was twisted. She hadn't expected to be able to torture herself this effectively. She could feel her very intestines vibrating, everything inside dancing to the rhythm. A second later, the five balls repelled and separated. A powerful force pushed outward, and Li Yan couldn't control herself; one of the balls was forced out of her rear by the magnetic repulsion. "Ah!" she shrieked. The ball hit the tile floor with a loud clatter, echoing her cry. Hu Lina was likely still sleeping, and Li Yan prayed she hadn't heard. She clamped a hand over her mouth. Her body could barely handle this; there had to be a limit to the play. Looking at the ball on the floor, stained with a mix of her own fluids, Li Yan felt even more aroused. The toy was perfect—a paradise for her rear. Now that both her front and back were filled with unprecedented satisfaction, she was even more eager for the bondage play to come. "You filthy, slutty bitch. Your best friend is just outside, and yet you’re still acting like such a desperate whore!" With a flick of his wrist, Xiao Ming uncoiled the hemp rope, his voice dripping with mockery. He strode toward the auntie, his hulking frame looming over her. Hearing his taunts and knowing Hu Lina was just on the other side of the door, a wave of intense shame and guilt washed over her. Yet, beneath that shame, the thrill of being bound and disciplined by her best friend’s son—feeling his thick, hard cock slamming into her fleshy ass while she was tied up—sent shivers of perverse ecstasy through her. Li Yan’s face flushed a deep, humiliated crimson, and she hung her head low. Ignoring her inner turmoil, Xiao Ming began to wind the coarse, bristly hemp rope around her voluptuous, pale body. As the rough fibers bit into the sensitive skin around her heavy, pendulous breasts, the raw friction sent a jolt through her, reigniting her masochistic arousal. He employed a complex, Japanese-style bondage technique. Two binding ropes cinched her breasts, forcing them upward into a provocatively perky shape. A vertical line of rope ran from her shoulders, under her breasts, and pulled the under-bust cord taut, while another knot tightened under her armpits. She felt as if her breasts were being crushed, the constriction so severe it made her breath hitch. With her hands bound tightly behind her back, she didn't dare struggle. The knots on her wrists were connected to the breast-binding ropes; any movement only tightened the noose around her chest, making the agony even more exquisite. Once she was fully bound, Xiao Ming snapped a real dog collar around her neck. He pulled a leash from his bag and clipped it to the collar. The sensation of being treated like a literal bitch made her heart race; she was terrified, yet addicted to the feeling of total submission. "Down, you bitch! Crawl over here! I have something to show you." He gave a sharp tug on the leash, leading her across the room. The *clack-clack* of her knees against the floor echoed through the space. She was trembling with a mix of fear and excitement—the danger of being discovered by Hu Lina only fueled her addiction to being tamed. With her hands tied behind her back and her heavy breasts swaying with every movement, she arched her spine and crawled forward, her knees digging into the floor. The room was small. Panting softly, she was led to the far wall, where he clipped her leash to a hook meant for clothes. Before her curious, shy eyes, he flipped over a piece of exercise equipment, revealing a hidden torture device. It featured two metal pillars and a stainless steel plate with two circular holes—a breast clamp. Between the pillars, Xiao Ming pulled out a horizontal bar, revealing a pair of sharp, gleaming needles. "Master... Xiao Ming, what is this? Why do you have something like this?" A primal fear gripped her; the hair on her arms and back stood on end as she asked, her voice trembling. "Hahaha, my little bitch, this is a gift I bought just for you. These are piercing needles for your nipples." He traced the sharp points with his finger, his eyes cold. "I watched videos online. Bitches need nipple rings. This device is designed to pierce them. I’ll lock your breasts into the clamp, then drive these needles through your nipples and fix them to the other side. The needles are coated in a special numbing and setting agent. After thirty minutes, the holes will be set, and you’ll be ready for these titanium rings." Hearing that she was to be pierced so cruelly, the auntie’s face went deathly pale. She shook her head violently, her forehead hitting the floor, the dog chain clattering against her collar. "No... please, I’m scared! Please, don't pierce me, Master!" "Every bitch of mine gets pierced. That’s the rule. But I won't force you. If you don't want it, I can untie you right now. We’ll go our separate ways, and pretend we never met." Xiao Ming’s voice was flat and final. As he reached for the ropes, the auntie froze. She looked at him, shivering with terror, her mind caught in a agonizing tug-of-war. A smirk played on Xiao Ming’s lips as he shook his head, feigning indifference. "This is SM, bitch. There’s no anesthesia. The needles are coated in a chemical that will make it burn like hell. And once they’re pierced, there’s no going back—you’ll be forced to wear those rings in shame forever. So, if you can’t take it, get out." As he moved to undo her bindings, a sudden look of resolve hardened her mature, beautiful features. With her hands still bound behind her back and her heavy breasts pressed flat against the cold floor, she bowed her head at his feet, her voice trembling but firm. "Please... Master Xiao Ming, please pierce me." She knew it would be painful, and that wearing the rings would be humiliating and inconvenient. But the thought of returning to a life as a mundane housewife, devoid of this forbidden passion, was a fate far worse. She had made her choice. After finishing a breakfast that felt both decadent and erotic, Li Yan, still wearing the faint, flushed marks of the morning’s activities on her cheeks, dutifully cleared the table. She had barely wiped the marble surface clean when her master, looking at the heavy table with a triumphant and inscrutable smile, issued a command with the casual authority of a man training a dog. "Come here, bitch. Take off your shoes and crawl up!" "Yes, Master!" She bent her supple frame, carefully slipping off her dainty maid’s loafers like a submissive Cinderella. With her small, porcelain-like feet encased in white silk, she braced herself against the edge of the table. With a nudge from her master against her small, rounded backside, she scrambled up, settling onto the table on all fours, looking every bit the little bitch she was meant to be. However, as she watched her master pull items from his bag with a roguish smirk, her pretty face paled with instinctive dread. It was the same syringe used for anal training yesterday, along with a bottle of cool, viscous glycerin. The mysterious, potent pink aphrodisiac was also present. The memory of the shameful, agonizing sensation of being filled with glycerin—a feeling so intense it made her belly and backside feel as though they might burst—flashed through her mind. Li Yan’s face drained of color, and her body began to tremble uncontrollably. "What? Are you unwilling?" Her master, busy drawing glycerin into the syringe, noticed her shivering. He looked up, his expression impatient and his tone domineering. Having been threatened with abandonment several times yesterday, the deeply conditioned Li Yan hurriedly shook her head, her voice frantic. "The bitch is willing! I’m willing! My slutty body belongs to you, Master—do whatever you want to train me, as long as it pleases you!" Her master offered no praise for her obedience, merely letting out a curt, cold grunt. "Then stick your slutty ass up! Use your hands to spread your hole and wait for me." "Yes… yes, Master…" Trembling in shame, Li Yan obeyed, kneeling and arching her full, rounded buttocks into a lewd, inviting position. Without rushing to draw the aphrodisiac, her master first reached out to lift her maid’s skirt, which barely covered her plump, fleshy cheeks. He exposed her full, rounded bottom and the delicate, puckered rosebud of her anus, now fully on display. Only after watching her tremble with anticipation did he begin to draw the pink liquid into the syringe. Though she wasn't bound today, Li Yan dared not resist. She watched with wide eyes as her master circled behind her. Her own trembling hands reached back to part her fleshy cheeks, stretching her anus into a dark, circular little hole. The position was so humiliating that she squeezed her eyes shut, her chest heaving with rapid, shallow breaths. In her agonizing wait, a soft *plop* sounded—the cold glass tip of the syringe was thrust into her chrysanthemum, sending a jolt of shock through her entire body. "Oh… ahhh… it’s so cold… it’s going in… it’s so uncomfortable…" Her master pushed the plunger with deliberate slowness, forcing Li Yan to feel every bit of the cool glycerin being injected into her depths. Before he had even finished, she felt her bowels churning under the stimulation, a wave of intense, explosive urgency rushing straight to her brain. "Ugh, ahhh…" Yet, she dared not move. She remained on all fours, gritting her teeth as her master injected the full three hundred milliliters of glycerin and aphrodisiac into her. Only after he withdrew the syringe, satisfied, did Li Yan tremble violently, pleading through tears. "Mas… Master, the bitch’s belly feels like it’s going to burst… it’s… it’s so unbearable…" She had been warned many times; even as her insides churned and gurgled as if they were being twisted, and her anus twitched uncontrollably in its desperate need to expel, she dared not ask for permission to relieve herself. She could only express her agony with a pained expression. Her cold-hearted master cared little for her suffering. Watching her tremble as she arched her backside in shame, he crossed his arms and hummed with amusement. "The glycerin and the aphrodisiac need time to take effect in your gut to produce the best results. We can't waste this time—let's continue testing your progress." "Come, bitch, give your slutty paws to your master!" As he pulled up a chair and sat by the table, he issued his command with regal authority. "Oh-woof… ugh, ahhh…" "Slutty bitch... the slutty bitch welcomes Master Xiaoming..." As Li Yan kowtowed, her body trembling, Xiaoming’s tall, burly, and powerful frame emerged from the stairwell with a casual, languid gait. He shut the door behind him and glanced down at the pathetic woman kneeling and kowtowing at his feet. With a cold, dismissive grunt, he pulled a coil of sturdy hemp rope from his pocket and strolled over, issuing a frigid command. "Turn around, you slutty bitch. Put your hands behind your back!" "Yes... Master..." Enduring the near-explosive pressure in her anus, she struggled to pivot on her knees. Her naked, delicate body turned with agonizing effort, and she respectfully crossed her wrists behind her back. As her fleshy buttocks quivered violently, she whimpered again. "Please... please, Master, grant me the binding!" Without a word, Xiaoming seized her wrists and yanked them upward. The rough, forceful motion sent a tidal wave of nausea through Li Yan’s stomach, nearly causing her to lose control. Her anus spasmed violently as she fought to hold it in. Beads of sweat slicked her forehead, and her heavy breasts—adorned with nipple rings—heaved with every breath. Xiaoming ignored her distress, methodically winding the hemp rope around her. He wrapped her wrists three times, then secured the rope to the knot already binding her breasts, pulling her arms into a rigid, arched position. Li Yan was forced to keep her hands high behind her back, terrified to move; the slightest struggle would tug at the ropes cinched tight around her breasts and send fresh, unbearable shocks through her already overstimulated, trembling anus. Yet, as her wrists were bound tight, a perverse sense of excitement washed over her. Every time she was trussed up like this, a submissive, bitchy thrill surged through her heart. However, the explosive pressure in her bowels was becoming truly unbearable. She endured as Xiaoming pulled the remaining rope, his fingers nimble and practiced. He wove the cord into a net, wrapping her white, fleshy arms in a diamond-patterned cage that bit into her skin, accentuating her curves. Just as Xiaoming finished, admiring his handiwork, Li Yan, trembling with her hands bound behind her, sobbed out a desperate plea. "Xiaoming, the bitch's stomach is about to explode. Please, I beg you, allow the bitch to relieve herself!" "Insolent! What kind of bitch expects to pleasure herself before serving her master? You filthy slave, use your mouth to drag the clothes out of that bag, spread them on the floor, and then serve me properly!" Inside her, the urge to defecate felt as though it might burst through her pale skin at any moment. Meanwhile, the vibrating eggs deep within her pussy pulsed rhythmically, sending waves of electric, numbing pleasure through her entire body. The vibration against her bound, sensitive walls felt so good it made her head swim, but she had to summon every ounce of willpower to resist the ecstasy, terrified that one moment of indulgence would lead to a humiliating accident in front of her master. Tears of agonizing pleasure welled in her eyes. Obeying the command, Li Yan forced herself to move, her bound hands trembling as she crawled toward the bag, her hips swaying with a slutty, involuntary rhythm. The pressure in her gut was so intense that as she bent her slender waist to reach the bag, she nearly lost control again. She dug her pale pink nails—each decorated with a tiny, glittering star—into the soft flesh of her palms, barely stifling the urge. Sweat matted her bangs to her forehead. In a state of intense, palpitating arousal, she dragged the clothes out and spread them before Xiaoming. Li Yan bent over once more, her face flushed with shame, and pleaded in a pitiful, breathless voice. "Mas... Master..." "What are you waiting for? Use your slutty bitch mouth to serve your master!" Xiaoming remained cold, his gaze fixed on the bulge in his jeans as he gestured with his chin. Seeing his impatience, Li Yan froze for a second, her face burning with shame. She had no choice but to endure the agonizing cramps in her stomach and the shocking vibrations in her pussy, nodding her head with a soft, desperate moan. "The bitch... the bitch understands..." Her face was flushed with the heavy, intoxicating flush of arousal brought on by the vibrations between her legs. With ragged, heavy breaths, she clumsily crawled two steps forward. Because her hands were tightly bound, she had to blushingly use her mouth to catch the zipper of Xiaoming’s jeans, struggling to pull it down.