Running at night, I stumbled upon the campus belle bound and hanging from the parallel bars, begging me to untie her.

Over by the parallel bars, there was a figure. To be precise, it was a woman, suspended from the bars. Xu Qing instinctively removed his earphones, lightened his footsteps, and slowly walked over. The closer he got, the clearer the sight became. She was bound from her chest to her thighs with black nylon ropes, meticulously tied into a strict diamond pattern. The ropes crossed down from the back of her neck, tied in a knot below her collarbone, then split into two strands, brutally constricting her full breasts. The ropes left deep marks on her pale chest, and her nipples, hardened from prolonged friction, trembled slightly in the moonlight. Her arms were bound behind her back, her wrists cinched tight with a slipknot, then wrapped further up past her elbows, immobilizing her entire upper body. The lower half was even more extreme. Her legs were forcibly spread into a standard M-shape, her ankles and the roots of her thighs tied together, her knees forced outwards. A rope ran from behind her waist to the front, precisely positioned to press into the most sensitive area between her legs, slightly parting the soft flesh, where a hint of moisture was already visible. She could only barely touch the ground with her toes; a slight slip would leave her suspended, the ropes immediately digging into her flesh. Her mouth was stuffed full with a black ball gag, saliva constantly dribbling down her chin, wetting her jaw, collarbone, and chest. Her eyes were covered with a black cloth, revealing only her rapidly trembling eyelashes, a testament to her fear and shame. Xu Qing stood five meters away, frozen in place. He recognized her. Xu Xinxin. The campus beauty of the sophomore journalism department, usually impeccably dressed in white shirts and light-colored pleated skirts, quietly reading by the window in the library. She was an excellent student, cool and aloof, rarely getting close to male students. Who would have thought she'd come alone to the deepest part of the school park at night, binding herself into this completely exposed, helpless state? Xu Qing's breathing suddenly deepened. He usually collected thousands of bondage-related videos, his favorite genre being "discovered by a stranger after self-bondage and exhibition." The actresses in those films, no matter how beautiful, were merely images on a screen. But now, the living campus beauty hung before him, bound by his own hands into the most perfect bondage pose, trembling slightly from the strain. He slowly approached. Xu Xinxin clearly heard his footsteps. Her body jolted violently, and a rapid "whimper" escaped her throat. Her toes desperately tried to move backward, but the ropes restricted her completely. The more she struggled, the deeper the ropes on her chest tightened, deforming her tender flesh, her nipples rubbing against the rough rope surface, causing a simultaneous surge of pain and numbness. The rope between her legs also tightened with each movement, making the already moist flesh burn. Xu Qing stopped less than a meter in front of her. Close enough to see the red marks where the ropes dug into the inner thighs, to see her abdomen trembling slightly from maintaining the pose for so long, to see the clear fluid seeping out from between her legs and sliding down her inner thighs. The air carried a faint scent of sweat, mixed with another, sweeter, more secret aroma. Xu Qing crouched down and reached out to touch her blindfolded eyes. Xu Xinxin's entire body shuddered violently, her whimpers suddenly rising in pitch, laced with obvious fear, yet also tinged with an undeniable excitement at being discovered. He didn't immediately untie her. Instead, he pushed the eye mask up a little. As the moonlight fell into her eyes, her usually cool gaze was filled with moisture, a mixture of shame and fear, her eyelids already red. Saliva continued to drip, leaving her chest a mess. She recognized him. Xu Qing was known as the "lab hermit" on campus, rarely appearing in public, but his clean appearance and height occasionally earned him mentions from female students. Now, he knelt before her, his gaze dark and terrifying, his lips pressed tightly together, yet unable to conceal the almost overflowing excitement in his eyes. Xu Xinxin's face instantly flushed crimson to her ears. She wanted to speak, but the ball gag blocked her mouth, allowing only muffled, tearful sounds. A few more drops of saliva fell, landing on her own reddened chest, sliding down her cleavage. Xu Qing stared at her for a long time. Then he reached out, grasped the tightest rope on her chest, and gently pulled it outward. Xu Xinxin's waist immediately went limp, and a suppressed whimper escaped her throat. Her legs involuntarily clenched. The rope dug deeper into her flesh with his movement, bringing a clear, painful, and numbing stimulation. "Did you tie yourself?" Xu Qing's voice was low, with a hint of hoarseness he himself didn't notice. She nodded desperately, then shook her head desperately, tears finally falling. Xu Qing looked at the red marks left by the ropes, at her body trembling from shame, and suddenly let out a soft laugh. The smile was faint, but it made Xu Xinxin's heart sink. He didn't untie her immediately. Instead, he reached out and slowly traced her reddened wrists. The ropes had dug into her flesh, leaving clear indentations that felt warm to the touch. His fingers followed the rope downwards, past her forced-open elbows, then further down, touching the shallow indentations on her waist. Six months ago was her first attempt at self-bondage. Finals week had buried her under a mountain of journalism assignments. She’d stayed in the library until closing every day, and still had to edit articles and memorize material back in her rented room at night. The pressure was so immense that one night, staring blankly at her computer screen until 3 AM, she felt like her entire body was falling apart. That night, on a whim, she opened a webpage she’d saved long ago but never clicked on. Shibari. Black ropes, skin marked with red from constriction, completely immobilized poses, and that feeling of total control. As she watched, her breathing grew ragged. The next evening, she went to an adult novelty store near campus and bought her first roll of nylon rope and a gag. Back in her room, she pulled the curtains tight and dimmed the lights to their lowest setting. Then, facing the mirror, she slowly, painstakingly, followed the video tutorial, tying her hands behind her back. The first attempt was loose, the rope kept slipping, and she was so frustrated her eyes welled up. In the end, she settled for a simple wrist restraint. But even with just that, the moment the rope truly tightened against her skin, her whole body went soft. The sensation of being bound was so strange. The pressure, the anxiety, the fear of her grades, all seemed to be squeezed out of her by the rope, little by little. All that remained was the feeling of her body being held in place, and the sound of her own heartbeat. Later, she became more and more proficient. From her wrists at first, to diamond restraints, high-tension binds, and even suspending herself from the bar in her room. She learned how to tie knots behind her back, how to loop the rope over her chest, how to spread her legs into an M-shape. She also learned to stuff a gag in her mouth, blindfold herself, and immerse herself completely in darkness and restraint. The wildest one was last week. She bound herself tightly in her room, then opened the window. The night breeze swept in, caressing her skin, which was red from the rope. She listened to the occasional footsteps passing outside, her heart pounding so hard it felt like it would explode. That thrill of "being discovered at any moment" was ten times more intense than simple restraint. So tonight, her boldness reached an extreme. She packed her rope, gag, and blindfold into her backpack and, after 10 PM, slipped into the innermost fitness area of the school park. Under the moonlight, she first tied her hands behind her back, then slowly completed the diamond restraint across her chest, and finally spread and secured her legs. The hardest part was hoisting herself onto the parallel bars—she had to use her tiptoes to step on the lower bar, loop the rope around it, and then gradually lift herself into suspension. The moment she succeeded, she almost cried out. The night wind blew, the rope dug into her flesh, her legs were spread wide open, and the air directly touched her most private parts. She heard her own ragged breaths, the faint chirping of insects in the distance, her heart beating terrifyingly fast. She had only intended to stay for ten minutes. But after ten minutes, she found herself struggling to hold on. Her toes began to go numb, the rope tightened with each passing moment, and her chest and inner thighs started to tingle. She wanted to lower herself, but found that the knot behind her back, tightened too forcefully, had already become difficult to loosen. Coupled with her hands being tied behind her, she couldn't reach it at all. Just as she began to feel scared, footsteps appeared. And then, it was Xu Qing. —Her memory cut off there. In reality, Xu Qing’s fingers had already unbuckled the strap at the nape of her neck. The moment the gag was gently removed, Xu Xinxin’s mouth snapped open, letting out a choked gasp that was almost a sob. A long, thin strand of saliva stretched out, landing on her own chest. Her jaw ached, almost unable to close, her lips were red and swollen from the constriction, looking both pathetic and lewd. “Haa… haa…” she panted, her voice hoarse, unlike her own. Xu Qing tossed the gag aside without ceremony, but didn't immediately untie her. He simply reached out and gently stroked her head again, his touch still light. The gag choked off all coherent speech, trapping it in her throat. Xu Xinxin could only emit muffled, nasal whimpers. Saliva was already escaping the corners of her mouth, trickling down her chin and dampening a small patch of her T-shirt collar. The blindfold rendered her sightless, and the leg binding prevented even the most basic attempt to kick, leaving her with only subtle body twitches to express her discomfort. The diamond-shaped rope on her chest rose and fell with each rapid breath, the soft flesh it constricted deforming slightly beneath the fabric. Her nipples had long since become hard and burning, pressing against the knot with every pulse. Xu Qing didn't immediately proceed to the next step. He simply stood before her, watching quietly. Completely restrained, Xu Xinxin trembled slightly from the earlier stimulation of her soles. Her legs were pressed tightly together, the knots at her knees already reddened from her struggles; her ankles were bound, leaving no room to even separate them. The gag forced her mouth open, saliva dripping continuously, sliding down her collarbone and into her shirt, the cold, wet sensation making her acutely aware of her current predicament. Xu Qing's breathing gradually deepened. He suddenly reached out and gently patted her pressed-together calves. "Don't move." Xu Xinxin's body visibly stiffened. The next second, she felt the ropes being readjusted. Xu Qing first folded her joined legs behind her—due to the leg binding, both legs had to bend together. He guided her to lie on her side on the sofa, his movements steady but with an unyielding force. The texture of the sofa came through her shorts, and she instinctively tried to push herself up, only to be held fast by the ropes on her upper body. Then, he began to pull her bound ankles upwards, inch by inch, towards her hands, which were already bound behind her back. New ropes were quickly produced. Black nylon cord wound around her wrists and ankles, connecting them tightly. With each loop, the connection grew more secure. The moment her limbs were linked, Xu Xinxin understood what was about to happen. The Five-Horse Harness. Her legs were forcibly bent backward, her wrists and ankles secured in an extremely restrictive bow shape. The diamond rope on her chest tightened further with the change in position, her breathing immediately becoming shallow and rapid. She instinctively tried to struggle, pulling her arms backward with force, only to be met with the sharp sting of the ropes digging deeper into her skin. Her legs, which she tried to straighten, were also held taut by the connecting rope, forcing her to maintain this shameful and helpless posture. "Mmm... Mmmph...!" Muffled whimpers escaped from behind the gag, laced with palpable panic. Her breathing intensified, causing more saliva to flow, leaving her chin, collarbone, and chest slick. Tears began to gather beneath the blindfold, a physiological response that brought her close to outright crying. Xu Qing tightened the final connecting knot and meticulously checked its tension. His fingers slid along the connecting rope, over her wrists and ankles, ensuring no blood vessels or nerves were constricted before he spoke in a low voice: "This is the Five-Horse Harness. You can't move even more than with the leg binding. Is your breathing still okay?" Xu Xinxin could only respond with a series of fragmented whimpers. She wanted to nod, but found even that movement difficult—her entire body was stretched into a bow, and any slight shift caused the ropes on her chest and the base of her thighs to tighten simultaneously. She could feel her back being pulled into an unnatural curve, her chest forced to arch forward, her nipples rubbing against the knot through the fabric, sending waves of tingling, itchy stimulation. The space between her legs, forced into a tight fold, was completely exposed to the air, and even through her shorts, the shame threatened to drown her. The most agonizing part was that this position made even the slightest wriggle incredibly difficult; her hands and feet were bound together, and the harder she struggled, the deeper the ropes dug in. Just as she was beginning to adapt to the position, Xu Qing's movements paused again. She heard the faint sound of him picking up his phone. The light from the screen, though blocked by the blindfold, still made her sense something was amiss. Then came the sound of the camera shutter, followed by the notification tone for recording. "Don't be scared," Xu Qing's voice came from above, with a hint of hoarseness he himself didn't notice. "Just recording. I won't send it to anyone. The way you look right now... I want to keep it for myself." Xu Xinxin's whimpers instantly rose in pitch. She wanted to shake her head, to tell him to stop, but the Five-Horse Harness prevented her from making any significant movements. She could only writhe futilely, the ropes emitting faint rustling sounds with her struggles, but offering no escape. Shame washed over her like a tide—bound like this, blindfolded, gagged, and now being recorded. This feeling of complete exposure to his lens was more devastating than mere restraint. Xu Qing positioned the phone at an angle that captured her entire body, then walked back to her side. The next second— Her soles were tickled again. This time it was more sudden and more merciless than before. Xu Xinxin’s entire body convulsed violently, and a high-pitched, utterly uncontrollable whimper erupted from her throat. The Five-Horse Harness prevented her from even curling up, her legs fixed behind her, her soles completely exposed to his hands. Xu Qing's fingers precisely scraped over the most sensitive spots, once, twice, three times... each touch sent uncontrollable tremors through her body. The connecting rope tightened with her struggles, and a distinct biting pain radiated from both her wrists and ankles. "Mmmph... Mmm—! Mmmph mmmph...!" Her breathing intensified, causing more saliva to flow, leaving her chin and chest a mess. Tears streamed from beneath the blindfold, sliding down her cheeks and into the corners of her mouth, mixing with the saliva. She desperately tried to press her legs together, to curl her feet, but found that no matter how hard she strained, her hands and feet were bound so tightly that she couldn't separate them by even a centimeter. She placed the prepared clothes and white stockings into a clean paper bag, then double-checked the chat history on her phone. From the initial panic of being bumped into at the park, to the tentative exchanges after adding each other as friends, to the fumbling awkwardness of their first formal rope session, and now being able to calmly discuss "what to wear," "what to tie," and "whether to use a gag," the changes felt so rapid they seemed unreal. Before going to sleep, Xu Qing sent one last message: "Rest early. Don't be nervous tomorrow. Tell me anytime if something feels uncomfortable. I'll listen. About the white stockings… thank you for being willing." The last sentence made Xu Xinxin's heart soften. She stared at the message for a long time, finally replying: "You rest early too. Goodnight." She turned off the light and lay in the darkness, unable to sleep. What kept replaying in her mind was the image of herself in white stockings, with Xu Qing tying ropes around her, strand by strand. There was his profile as he tied her with concentration, the sensation of the fabric being compressed as the rope tightened over the stockings, the moment of complete darkness when the blindfold was placed on, and the restrained yet clear desire in his voice when he said, "I just wanted to see you tied up in white stockings." She buried her face in the pillow and let out a soft sigh. So, when dating truly began, even rope sessions became different. No longer just shame and excitement, but also a little bit of… anticipation of being seen by him. Anticipation of him tightening the ropes over the white stockings, anticipation of his gaze after she was tied, and anticipation that after everything was over, he would gently pat her head like last time and say, "Well done." Her phone lit up again. It was Xu Qing: "If the white stockings feel uncomfortable later, or if you want to change back to regular socks, just say so. It's really okay." Looking at the message, Xu Xinxin suddenly felt a prickle in her nose. She replied, "Got it. I'll wear them." Then she hugged the phone to her chest and closed her eyes. This time, as she fell asleep, a faint smile touched her lips, one she hadn't even noticed. And tomorrow was Saturday. The paper bag was placed by the bedside, the white stockings and the skirt lying quietly inside, as if waiting for something. At four o'clock on Saturday afternoon, Xu Xinxin had already begun her preparations. She took out the clothes she had put in the paper bag the night before, spreading them out on the bed one by one. A white shirt, a light-colored pleated skirt, and the pair of white over-the-knee stockings she had barely worn. She took a long bath first, cleaning her body thoroughly, even soaking her fingertips until they were slightly wrinkled. After drying off, she stood in front of the mirror for a long time. Finally, she opened the small box at the bottom of her nightstand. The bullet vibrator. Small, round, and smooth on the surface. She had used it once when she played by herself, and then kept it in the box. Now, she held it in her palm, hesitated for a long time, and then, closing her eyes, slowly pushed it inside. The foreign sensation made her tremble slightly. She confirmed the switch was off, checked it twice more, and then began to put on the white stockings. The stockings were pulled up her thighs bit by bit, a cool sensation spreading upwards against her skin, stopping just above her knees. Then she put on the pleated skirt and the white shirt, buttoning it up one by one. The reflection in the mirror showed an ordinary and obedient girl, but only she knew the secret, filled sensation beneath the skirt. She left at six forty. She walked slowly on the way, and with every step, the bullet vibrator inside her shifted gently, reminding her of its presence. When she reached the entrance of Xu Qing's apartment complex, she stood still and took several deep breaths before daring to go in. The mirrored surface of the elevator reflected her flushed cheeks, and a section of the white stockings peeked out from under the hem of her skirt, looking clean to the point of being lewd. Her palms were sweating by the time she pushed the door open. Xu Qing had already changed into loungewear. Seeing her enter, his gaze naturally fell on her legs. The white stockings. His Adam's apple bobbed noticeably, and his voice was lower and huskier than usual: "You're here. Want to tidy up in the bathroom first?" "I've already showered." Xu Xinxin put down her schoolbag, not daring to meet his eyes. "Then come sit here." She walked over and sat down beside him. There was a small distance between them, and neither spoke first. The air was filled with the familiar yet tense silence unique to a second meeting. Xu Qing spoke first, his tone as steady as he could make it: "Today, you're in charge. Stop anytime if something feels uncomfortable. The safeword is 'double bar.' If the white stockings feel too tight at any point, you can say so too." "...Okay." "Shall I begin then?" Xu Xinxin nodded gently and offered her wrist. The moment Xu Qing's fingers touched her skin, both of them paused noticeably. He started with the most basic single column tie, wrapping the black rope around her wrist, circle by circle. Unlike last time, he tied it slower this time, using his fingertips to confirm the tightness with each wrap. The rope gradually extended from her wrist to her forearm, then crossed to her upper arm, forming an initial diamond shape. The sleeves of the white shirt were pressed into shallow creases, and the outline of the rope marks could already be seen faintly beneath the fabric. He had her place her hands behind her back and began the chest tie. As the rope wrapped around her front, it inevitably brushed against the curves beneath the white shirt. The moment the knot tightened at her chest, Xu Xinxin let out a soft gasp. The fabric was pulled tight against her body, and her nipples had somehow become erect, rubbing against her shirt and the rope with each breath. Even more devastatingly, the bullet vibrator inside her shifted slightly with her changing breaths, bringing a subtle yet clear sense of its presence. "Are you okay?" Xu Qing asked. "Mmm… I can." Her voice was already a little unsteady. He continued downwards. Her waist, her inner thighs, the rope wound around the pleated skirt, shaping it in a new way. The first time the rope truly tightened over the white stockings, Xu Xinxin's body visibly trembled. The nylon rope pressed against the smooth surface of the stocking, the sensation both distinct and strange—not as painful as directly on skin, but with an added layer of fabric compression, a more detailed form of restraint. The white stockings were marked with shallow lines, their edges slightly rolled up, looking both obedient and lewd. Xu Qing's fingers paused on the white stockings, his fingertips slowly tracing along the rope marks. "White stockings…" he murmured, as if to himself, "they suit being tied even better than I imagined." Xu Xinxin turned her face away, her ears burning red. The bullet vibrator inside her rolled again as she clenched her thighs, and she almost let out a whimper. Xu Qing didn't say anything further. Instead, he had her bring her legs together and began the leg tie. The rope wrapped around above her knees, securing her to her ankles. The white stockings were marked with continuous lines, and with each tightening, Xu Xinxin's breathing became more erratic. By the time the leg tie was complete, she couldn't even spread her legs apart. The bullet vibrator inside her was pressed more noticeably by this position, and every subtle movement felt like a reminder of how bold she had been beforehand. Xu Qing checked all the knots, ensuring no joints were compressed, before picking up the blindfold. "Put it on?" Xu Xinxin nodded. The world plunged into darkness once more. With her vision deprived, the rope marks on the white stockings, the pressure beneath the shirt, and the presence of the bullet vibrator inside her were all amplified infinitely. She heard him stand up, move behind her, and the ropes tightened again. The diamond shape on her chest was adjusted to fit more snugly, and another loop was added to the waist tie. Her entire body was held in a quiet yet erotic pose by the black ropes and the white stockings. "Let's play a game," Xu Qing said. "To help with digestion." "What game?" Lin Yue asked, opening her eyes and looking at the blue sky. "A race," Xu Qing said. "The two of you, tied in a dog position, crawl from here to that tree." He pointed to a locust tree not far away, about twenty meters off, at the edge of the grass, under its shade. The lawn was open, with people occasionally walking by, children flying kites in the distance, and old people strolling. "Here?" Xu Xinxin sat up, looking around. "Someone might see..." "That's why you have to be fast," Xu Qing said, a smile playing on his lips. "Tied in a dog position, crawl over. Whoever reaches the tree first gets to choose the position tonight. The one who arrives last... will be tied to the tree, and watch." Lin Yue's core heated up. She remembered the feeling of being watched when she had been rubbing against Xu Xinxin on the blanket earlier. Now they had to crawl outdoors, on the grass, with the possibility of being discovered. "Is that fair?" she asked. "Her arms are longer than mine." "Then tie your ropes tighter," Xu Qing said. "Get down." They complied, lying face down on the grass, the blades tickling their cheeks. Xu Qing tied Xu Xinxin first, her hands bound behind her back, wrists together, the rope looped three times and tightened. Then he pulled her ankles up to her wrists and used another rope to bind her ankles and wrists together, forming a standard dog position. When the connection was complete, Xu Xinxin's body was forced into an exaggerated arch, her chest pressed against the grass, her hips raised. She could only support herself with her knees and elbows, like some kind of animal, some kind of tamed prey. The grass blades rubbed against her chest, creating a subtle stinging sensation through the thin fabric. "Tight?" Xu Qing asked. "Tight..." Xu Xinxin said, her voice trembling. The coolness of the grass seeped through the fabric. "But... it's okay." "Yours," Xu Qing said, turning to Lin Yue. Lin Yue lay down in the same position, but Xu Qing tied her tighter, the distance between her wrists and ankles shorter, forcing her to arch more deeply to compensate for her longer arms. The rope dug into her skin, the grass pricked her face, and she let out a soft sigh, like a familiar restraint. "Done," Xu Qing said, stepping back and looking at the two girls, tied in a dog position and lying on the grass. "The rules are simple. From here, crawl to that tree. No standing up, no rolling, only crawling. The first one there gets to choose the position tonight. The one who arrives last will be tied to the tree and watch." He took out two gags, red ones. "Put them in your mouths. No talking, no begging, only crawling." Xu Xinxin and Lin Yue opened their mouths, letting him insert the gags. The straps were buckled behind their heads, their jaws propped open. Saliva immediately began to pool, trickling down their chins and dripping onto the grass blades, glistening in the sun. "Ready..." Xu Qing said, his voice hoarse, as if he too were anticipating the excitement. The two girls lay side by side, their bodies arched, knees and elbows on the ground, like two horses waiting for the starting signal. In the distance, children's laughter could be heard, the sound of the wind rustling through the grass, and their own heartbeats. "Go!" Xu Xinxin moved first. She pushed forward with her knees, elbows on the ground, her body rubbing against the grass like some clumsy insect. The gag prevented her from speaking, allowing only muffled whimpers, saliva dripping down her chin and onto the grass, leaving wet marks. The grass blades rubbed against her chest, against her thighs, causing a subtle itch and sting. Lin Yue also moved, but the dog position made every movement difficult. Her knees scraped against the grass, her elbows supported the weight of her upper body, her chest was compressed, and breathing was hard. The path she crawled left the grass flattened, a winding trail like a map she was drawing. Xu Qing walked beside them, holding a riding crop, occasionally giving their buttocks a light tap, like a form of urging, a command to accelerate. "Faster," he said. "Whoever gets there first chooses the position tonight. The one who arrives last will be tied to the tree and watch." Xu Xinxin crawled quickly, or rather, she tried to. But the dog position made every movement difficult. Her knees were reddening from scraping against the grass, blades of grass pricking her skin, causing a subtle pain. She could see the tree, just ahead, like a desired destination, like a reward she had to obtain. She increased her speed, knees and elbows alternating, her body rubbing against the grass with a soft rustling sound. Lin Yue also sped up, but her ropes were tied tighter, restricting her movements. Each time, she could only move a short distance. Her wrists struggled, trying to find a better point of support, but the ropes were too tight, preventing any movement. She could only maintain that shameful, arched posture, crawling forward with difficulty. The grass blades rubbed against her chest, against her inner thighs, creating a strange sensation, a mixture of pain and pleasure. "Wet just looking at it?" Xu Qing chuckled, stirring the water with his finger. "Then if I let you look longer... will you get wetter?" He picked something up from the edge of the bathtub – a small remote control with a few buttons. Xu Xinxin and Lin Yue both looked over, and before they could react, they heard a faint buzzing sound. It was a vibrator. Not the one from before, but a new one, wireless, pink, and seemingly smaller than the previous one, yet its vibration was louder and deeper. "Put them on," Xu Qing said. "Both of you. And then... we're going to the classroom." "Now?" Xu Xinxin's eyes widened. "Two in the morning... to the classroom?" "The one with the broken lock," Xu Qing's gaze darkened. "307. The door is broken, it won't lock, anyone can push it open. And..." he paused, "there are windows facing the corridor. If someone walks by in the corridor and shines a flashlight... they'll be able to see inside." Xu Xinxin's core tightened violently. That feeling of fear mixed with anticipation returned, making her heart race faster than pure stimulation, like something gently churning in her stomach. "Put them on," Xu Qing repeated, handing them the vibrators. "Insert them. Then put on your clothes... your dresses, no underwear. Let me touch you anytime, let me open them anytime." Xu Xinxin took the pink vibrator, her fingers trembling. She had never gone out with something inside her, let alone to a classroom, a place where they could be discovered at any moment. But she did it anyway. In the bathtub, she slightly arched her back, slowly pushing the smooth, round object inside her. The foreign sensation made her frown slightly, but she quickly adapted. The switch was still exposed, like a tiny tail. Lin Yue was doing the same beside her. Their eyes met, and they saw the nervousness in each other's eyes, and that undeniable flicker of excitement. Xu Qing found dresses for them – Xu Xinxin had a light-colored pleated skirt, and Lin Yue had a black slip dress, both very short, just covering the tops of their thighs. Their underwear was confiscated, tossed on the bathroom floor, wet and glistening, like some discarded evidence. "Let's go," he said, picking up the remote and the ropes. "To the classroom." Two-thirty in the morning, the third floor of the teaching building. The corridor was terrifyingly quiet, only the emergency lights casting a faint green glow, painting the floor in irregular shadows. The door to classroom 307 was indeed broken, the latch hanging loosely, opening with a push. Xu Qing pushed the door open, and the three of them slipped inside. Moonlight streamed through the windows, casting the desks and chairs in a silvery white hue. He didn't turn on the lights, simply had the two girls stand in front of the podium, their backs to the window, and then began to tie them. This time, he tied them quickly and tightly. Xu Xinxin's hands were bound behind her back, wrists tied together. The rope wrapped around her chest, crossing in front, pressing her nipples hard until they stood erect, trembling slightly with her breath. Lin Yue was tied in a spread-eagle position, her wrists and ankles bound together, her body forced into an arch, kneeling on the podium. Her buttocks were high in the air, the black hem of her dress pushed up to her waist by the pose, revealing everything. "Now," Xu Qing took out the remote, "turn them on." He pressed the switch. "Mmm—!" Both girls let out a suppressed whimper at the same time. The vibrators inside them began to buzz in unison, the low hum echoing in the silent classroom like a secret heartbeat. Xu Xinxin's legs went weak instantly, almost collapsing, but Xu Qing held her up, forcing her to remain standing. "Don't move," he said. "Stand still. Let me see... how long you can last." He began to unbutton his pants. His erection was already hard, glistening wetly in the moonlight. He walked behind Lin Yue, lightly spanked her buttocks with his fingers, then pressed against her core, slowly pushing inside. "Ah..." Lin Yue let out a muffled whimper, the sound echoing in the empty classroom. "Someone might hear..." "Then don't make a sound," Xu Qing said, beginning to thrust slowly, each stroke reaching the deepest point. "Or... let her shut you up." He gestured for Xu Xinxin to come closer. Xu Xinxin moved her feet with difficulty, the vibrator inside her vibrating with each step, making it almost impossible for her to stand steady. She walked to Lin Yue, and Xu Qing reached out, pressing the back of her head, forcing her to lower her face. "Kiss her," Xu Qing commanded. "Use your mouth to silence her." Xu Xinxin hesitated for a moment, then her lips met Lin Yue's. Both their lips trembled, carrying the lingering vibrations of the vibrators, exchanging breaths and whimpers. Xu Qing thrust into Lin Yue, each impact pressing Lin Yue's lips tighter, teeth clashing against teeth, yet neither separated. "Synchronize," Xu Qing panted. "When she orgasms... you orgasm too... together..." He quickened his pace, his fingers simultaneously reaching under Xu Xinxin's skirt, finding the vibrator's switch, and turning it to the highest setting. The intense vibration exploded instantly. Xu Xinxin's entire body tensed, and she let out a muffled scream into Lin Yue's kiss. Lin Yue felt it too – through their bodies, she could feel the throbbing inside her, could feel Xu Qing's muscles spasming violently as Xu Xinxin climaxed. This indirect sensation was more intense than direct stimulation, and she began to tremble as well, her inner walls contracting, squeezing Xu Qing even tighter. Xu Qing let out a low growl and ejaculated inside Lin Yue, his hot cum flooding her depths. He then quickly withdrew, his tip still slick with fluid, and pressed against Xu Xinxin's core – it was already incredibly wet from the vibrator and her recent orgasm, and he entered her with almost no resistance. "One more..." he panted, thrusting rapidly inside Xu Xinxin. "Together..." Chen Yu was last. I had her lie on her side on the restraint frame, her waist secured by straps, her wrists and ankles bound in a crab-like position – ankles pulled towards her groin, wrists fixed in front of her head. This posture folded her body completely, exposing her most intimate parts while simultaneously tightening them due to the fold. Three girls, three positions, three different ways of being exposed, all secured to the metal frame, unable to move, unable to escape, only able to wait. "Now," I un